MAX232EPE资料

2020-07-27 来源：客趣旅游网

元器件交易网www.cecb2b.com19-4323; Rev 15; 1/06

+5V-Powered, Multichannel RS-232

Drivers/Receivers

General DescriptionThe MAX220–MAX249 family of line drivers/receivers isintended for all EIA/TIA-232E and V.28/V.24 communica-tions interfaces, particularly applications where ±12V isnot available.

These parts are especially useful in battery-powered sys-tems, since their low-power shutdown mode reducespower dissipation to less than 5µW. The MAX225,MAX233, MAX235, and MAX245/MAX246/MAX247 useno external components and are recommended for appli-cations where printed circuit board space is critical.

Next-Generation Device Features♦For Low-Voltage, Integrated ESD Applications

MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E: +3.0V to +5.5V, Low-Power, Up to1Mbps, True RS-232 Transceivers Using Four0.1µF External Capacitors (MAX3246E Availablein a UCSP™Package)♦For Low-Cost Applications

MAX221E: ±15kV ESD-Protected, +5V, 1µA,

Single RS-232 Transceiver with AutoShutdown™

MAX220–MAX249________________________Applications

Portable ComputersLow-Power ModemsPARTMAX220CPEMAX220CSEOrdering InformationTEMP RANGE0°C to +70°C0°C to +70°CPIN-PACKAGE16 Plastic DIP16 Narrow SOInterface Translation

Battery-Powered RS-232 SystemsMAX220CWE0°C to +70°C16 Wide SOMAX220C/D0°C to +70°CDice*Multidrop RS-232 Networks

MAX220EPE-40°C to +85°C16 Plastic DIPMAX220ESE-40°C to +85°C16 Narrow SOMAX220EWE-40°C to +85°C16 Wide SOMAX220EJE-40°C to +85°C16 CERDIPMAX220MJE-55°C to +125°C16 CERDIPAutoShutdown and UCSP are trademarks of Maxim IntegratedOrdering Information continued at end of data sheet.Products, Inc.

*Contact factory for dice specifications.

Selection TablePowerNo. ofNominal

SHDN Rx

PartSupplyRS-232No. ofCap. Value& Three-Active inData RateNumber(V)Drivers/RxExt. Caps(µF)StateSHDN(kbps)Features

MAX220+52/240.047/0.33No—120Ultra-low-power, industry-standard pinoutMAX222

+52/24 0.1Yes—200Low-power shutdown

MAX223 (MAX213)+54/541.0 (0.1)Yes✔120MAX241 and receivers active in shutdownMAX225

+55/50—Yes✔120Available in SO

MAX230 (MAX200)+55/041.0 (0.1)Yes—1205 drivers with shutdown

MAX231 (MAX201)+5 and

2/2 21.0 (0.1)No—120Standard +5/+12V or battery supplies; +7.5 to +13.2same functions as MAX232MAX232 (MAX202)+52/241.0 (0.1)No—120 (64)Industry standard

MAX232A

+52/240.1No—200Higher slew rate, small capsMAX233 (MAX203)+52/20— No—120No external caps

MAX233A

+52/20—

No—200No external caps, high slew rateMAX234 (MAX204)+54/041.0 (0.1)No—120Replaces 1488MAX235 (MAX205)+55/50—

Yes—120No external caps

MAX236 (MAX206)+54/341.0 (0.1)Yes—120Shutdown, three state

MAX237 (MAX207)+55/341.0 (0.1)No—120Complements IBM PC serial portMAX238 (MAX208)+54/441.0 (0.1)No—120Replaces 1488 and 1489

MAX239 (MAX209)+5 and

3/521.0 (0.1)No—120Standard +5/+12V or battery supplies;

+7.5 to +13.2single-package solution for IBM PC serial portMAX240

+55/541.0

Yes—120DIP or flatpack packageMAX241 (MAX211)+54/541.0 (0.1)Yes—120Complete IBM PC serial portMAX242+52/240.1Yes✔200Separate shutdown and enableMAX243+52/240.1No —200Open-line detection simplifies cablingMAX244+58/1041.0No—120High slew rate

MAX245+58/100—Yes✔120High slew rate, int. caps, two shutdown modesMAX246+58/100—Yes✔120High slew rate, int. caps, three shutdown modesMAX247+58/90—Yes✔120High slew rate, int. caps, nine operating modesMAX248+58/841.0Yes✔120High slew rate, selective half-chip enablesMAX249

6/10

1.0

Yes

✔

120

Available in quad flatpack package

________________________________________________________________Maxim Integrated Products1

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243

Supply Voltage (VCC)...............................................-0.3V to +6VV+ (Note 1)..................................................(VCC- 0.3V) to +14VV- (Note 1).............................................................+0.3V to +14VInput Voltages

TIN..............................................................-0.3V to (VCC- 0.3V)RIN (Except MAX220)........................................................±30VRIN (MAX220).....................................................................±25VTOUT(Except MAX220) (Note 2).......................................±15VTOUT (MAX220)...............................................................±13.2VOutput Voltages

TOUT...................................................................................±15VROUT.........................................................-0.3V to (VCC+ 0.3V)Driver/Receiver Output Short Circuited to GND.........ContinuousContinuous Power Dissipation (TA= +70°C)

16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW

18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)..889mW20-Pin Plastic DIP (derate 8.00mW/°C above +70°C)..440mW16-Pin Narrow SO (derate 8.70mW/°C above +70°C)...696mW16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW20-Pin SSOP (derate 8.00mW/°C above +70°C)..........640mW16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mWOperating Temperature Ranges

MAX2_ _AC_ _, MAX2_ _C_ _.............................0°C to +70°CMAX2_ _AE_ _, MAX2_ _E_ _..........................-40°C to +85°CMAX2_ _AM_ _, MAX2_ _M_ _.......................-55°C to +125°CStorage Temperature Range.............................-65°C to +160°CLead Temperature (soldering, 10s) (Note 3)...................+300°C

Note 1:For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V.Note 2:Input voltage measured with TOUTin high-impedance state, SHDNor VCC= 0V.Note 3:Maximum reflow temperature for the MAX233A is +225°C.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= TMINto TMAX‚ unless otherwise noted.)PARAMETERRS-232 TRANSMITTERSOutput Voltage SwingInput Logic Threshold LowInput Logic Threshold HighAll devices except MAX220MAX220: VCC = 5.0VAll except MAX220, normal operationLogic Pullup/lnput CurrentSHDN = 0V, MAX222/MAX242, shutdown,MAX220VCC = 5.5V, SHDN = 0V, VOUT = ±15V,MAX222/MAX242VCC = SHDN = 0VData RateTransmitter Output ResistanceOutput Short-Circuit CurrentRS-232 RECEIVERSRS-232 Input Voltage Operating RangeRS-232 Input Threshold LowRS-232 Input Threshold HighVCC = 5VVCC = 5VMAX220All except MAX243 R2INMAX243 R2IN (Note 4)All except MAX243 R2INMAX243 R2IN (Note 4)0.8-31.8-0.52.4-0.11.3±30±25VVVVCC = V+ = V- = 0V, VOUT = ±2VVOUT = 0VVOUT = 0VMAX220300±7VOUT = ±15VMAX220, VOUT = ±12V20010M±22±6022.45±0.01±0.01±0.0140±1±10±10±25116kbpsΩmAµAµAAll transmitter outputs loaded with 3kΩ to GND±5±81.41.40.8VVVCONDITIONSMINTYPMAXUNITSOutput Leakage Current2_______________________________________________________________________________________

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ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= TMINto TMAX‚ unless otherwise noted.)PARAMETERCONDITIONSMINTYPMAXUNITSAll except MAX220/MAX243, VCC = 5V, nohysteresis in SHDN0.20.51.0RS-232 Input HysteresisMAX2200.3VMAX2431RS-232 Input ResistanceT357A = +25°C (MAX220)357kΩTTL/CMOS Output Voltage LowIOUT = 3.2mA0.20.4IOUT = 1.6mA (MAX220)0.4VTTL/CMOS Output Voltage HighIOUT = -1.0mA3.5VCC - 0.2VTTL/CMOS Output Short-Circuit CurrentSourcing VOUT = GND-2-10Shrinking VmAOUT = VCC1030TTL/CMOS Output Leakage CurrentSHDN = VCC or EN = VCC (SHDN = 0V forMAX222), 0V ≤ VOUT ≤ VCC±0.05±10µAEN Input Threshold LowMAX2421.40.8VEN Input Threshold HighMAX2422.01.4VOperating Supply Voltage4.55.5VMAX2200.52No loadMAX222/MAX232A/MAX233A/V410CC Supply Current (SHDN = VCC),MAX242/MAX243Figures 5, 6, 11, 19MAX22012µA3kΩ load bothinputsMAX222/MAX232A/MAX233A/MAX242/MAX24315TA = +25°C0.110Shutdown Supply CurrentMAX222/TA = 0°C to +70°C250MAX242T250µAA = -40°C to +85°CTA = -55°C to +125°C35100SHDN Input Leakage CurrentMAX222/MAX242±1µASHDN Threshold LowMAX222/MAX2421.40.8VSHDN Threshold HighMAX222/MAX2422.01.4VCL = 50pF to2500pF, RΩMAX222/MAX232A/MAX233/L = 3k61230Transition Slew Rateto 7kΩ, VMAX242/MAX243CC = 5V,TA = +25°C,V/µsmeasured fromMAX2201.5330.0+3V to -3V or -3VMAX222/MAX232A/MAX233/tPHLTMAX242/MAX2431.33.5Transmitter Propagation Delay TLL toMAX220410RS-232 (Normal Operation), Figure 1MAX222/MAX232A/MAX233/µst3.5PLHTMAX242/MAX2431.5MAX220510Note 4:MAX243 R2OUTis guaranteed to be low when R2INis ≥0V or is floating._______________________________________________________________________________________

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= TMINto TMAX‚ unless otherwise noted.)

PARAMETERtPHLRReceiver Propagation Delay RS-232 toTLL (Normal Operation), Figure 2tPLHRCONDITIONSMAX222/MAX232A/MAX233/MAX242/MAX243MAX220MAX222/MAX232A/MAX233/MAX242/MAX243MAX220Receiver Propagation Delay RS-232 toTLL (Shutdown), Figure 2Receiver-Output Enable Time, Figure 3Receiver-Output Disable Time, Figure 3Transmitter-Output Enable Time (SHDNGoes High), Figure 4Transmitter-Output Disable Time (SHDNGoes Low), Figure 4Transmitter + to - Propagation DelayDifference (Normal Operation)tPHLStPHLStERtDRtETMAX242MAX242MAX242MAX242MAX222/MAX242, 0.1µFcaps (includes charge-pumpstart-up)MAX222/MAX242,0.1µF capsMAX222/MAX232A/MAX233/MAX242/MAX243MAX220MAX222/MAX232A/MAX233/MAX242/MAX243MAX220MINTYP0.50.60.60.80.52.5125160250MAX131310µs10500500nsnsµsµsUNITStDT600300nstPHLT - tPLHTns2000100225Receiver + to - Propagation DelayDifference (Normal Operation)tPHLR - tPLHRns__________________________________________Typical Operating Characteristics

MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243

OUTPUT VOLTAGE vs. LOAD CURRENT

MAX220-01AVAILABLE OUTPUT CURRENT

vs. DATA RATE

MAX220-02MAX222/MAX242

ON-TIME EXITING SHUTDOWN

1μF CAPSV+V+, V- VOLTAGE (V)+5V+5V0V0V

1μF CAPS0.1μF CAPSV--10V

V-500μs/div0.1μF CAPSSHDNV+MAX220-031086OUTPUT VOLTAGE (V)420-2-4-6-8-10

EITHER V+ OR V- LOADEDVCC = ±5VNO LOAD ONTRANSMITTER OUTPUTS(EXCEPT MAX220, MAX233A)V- LOADED, NO LOAD ON V+0.1μF1μF1110OUTPUT CURRENT (mA)98765

ALL CAPS0.1μFALL CAPS1μFVCC = +5.25VOUTPUT LOAD CURRENTFLOWS FROM V+ TO V-+10V

0.1μF1μFVCC = +4.75VV+ LOADED, NO LOAD ON V-10

LOAD CURRENT (mA)

DATA RATE (kb/s)

4_______________________________________________________________________________________

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Drivers/Receivers

ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241

VCC...........................................................................-0.3V to +6V20-Pin Wide SO (derate 10.00mW/°C above +70°C).......800mWV+................................................................(VCC- 0.3V) to +14V24-Pin Wide SO (derate 11.76mW/°C above +70°C).......941mWV-............................................................................+0.3V to -14V28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1WInput Voltages

44-Pin Plastic FP (derate 11.11mW/°C above +70°C).....889mWTIN............................................................-0.3V to (VCC+ 0.3V)14-Pin CERDIP (derate 9.09mW/°C above +70°C)..........727mWRIN......................................................................................±30V16-Pin CERDIP (derate 10.00mW/°C above +70°C)........800mWOutput Voltages

20-Pin CERDIP (derate 11.11mW/°C above +70°C)........889mWTOUT...................................................(V+ + 0.3V) to (V- - 0.3V)24-Pin Narrow CERDIP

ROUT.........................................................-0.3V to (VCC+ 0.3V)(derate 12.50mW/°C above +70°C)..............1W

Short-Circuit Duration, TOUT......................................Continuous24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........1.6WContinuous Power Dissipation (TA= +70°C)

28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)....800mWOperating Temperature Ranges

16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mWMAX2 _ _ C _ _......................................................0°C to +70°C20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mWMAX2 _ _ E _ _...................................................-40°C to +85°C24-Pin Narrow Plastic DIP

MAX2 _ _ M _ _......................................................-55°C to +125°C(derate 13.33mW/°C above +70°C)..........1.07W

Storage Temperature Range.............................-65°C to +160°C24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mWLead Temperature (soldering, 10s) (Note 4)...................+300°C

16-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW

Note 4:Maximum reflow temperature for the MAX233/MAX235 is +225°C.

ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241

(MAX223/230/232/234/236/237/238/240/241, VCC= +5V ±10; MAX233/MAX235, VCC= 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239,VCC= 5V ±10%; V+ = 7.5V to 13.2V; TA= TMINto TMAX; unless otherwise noted.)

PARAMETERCONDITIONSMINTYPMAXUNITSOutput Voltage SwingAll transmitter outputs loaded with 3kΩto ground±5.0±7.3VMAX232/233510VCCPower-Supply CurrentNo load,TA= +25°CMAX223/230/234–238/240/241715mAMAX231/2390.41V+ Power-Supply CurrentMAX2311.85MAX239515mAShutdown Supply CurrentT1550A= +25°CMAX223MAX230/235/236/240/241110µAInput Logic Threshold LowTIN; EN, SHDN(MAX233); EN, SHDN (MAX230/235–241)0.8VTIN2.0Input Logic Threshold HighEN, SHDN(MAX223);EN, SHDN (MAX230/235/236/240/241)2.4VLogic Pullup CurrentTIN =0V1.5200µAReceiver Input VoltageOperating Range-30+30V_______________________________________________________________________________________5

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)

(MAX223/230/232/234/236/237/238/240/241, VCC= +5V ±10; MAX233/MAX235, VCC= 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239,VCC= 5V ±10%; V+ = 7.5V to 13.2V; TA= TMINto TMAX; unless otherwise noted.)

PARAMETERCONDITIONSNormal operationSHDN= 5V (MAX223)SHDN = 0V (MAX235/236/240/241)Shutdown (MAX223)SHDN= 0V,EN = 5V (R4IN, R5IN)Normal operationSHDN= 5V (MAX223)SHDN = 0V (MAX235/236/240/241)Shutdown (MAX223)SHDN= 0V,EN = 5V (R4IN‚ R5IN)0.233.5MIN0.8TYP1.2V0.61.5MAXUNITSRS-232 Input Threshold LowTA= +25°C, VCC= 5V1.72.4VRS-232 Input Threshold HighTA= +25°C,VCC= 5V1.50.55VCC- 0.40.056004009002500.52.41.070.4VkΩVV±10µAnsns10404030V/µsµsRS-232 Input HysteresisRS-232 Input ResistanceTTL/CMOS Output Voltage LowTTL/CMOS Output Voltage HighTTL/CMOS Output Leakage CurrentReceiver Output Enable TimeReceiver Output Disable TimeVCC= 5V, no hysteresis in shutdownTA= +25°C, VCC= 5VIOUT= 1.6mA (MAX231/232/233, IOUT= 3.2mA)IOUT = -1mA0V ≤ROUT≤VCC; EN = 0V (MAX223); EN= VCC(MAX235–241 )Normal operationNormal operationMAX223MAX235/236/239/240/241MAX223MAX235/236/239/240/241tPHLStPLHSPropagation DelayNormal operationRS-232 IN toTTL/CMOS OUT,SHDN= 0VCL= 150pF(MAX223)4635.1Transition Region Slew RateMAX223/MAX230/MAX234–241, TA= +25°C, VCC= 5V, RL= 3kΩto 7kΩ‚ CL= 50pF to 2500pF, measured from+3V to -3V or -3V to +3VMAX231/MAX232/MAX233, TA= +25°C, VCC= 5V, RL= 3kΩto 7kΩ, CL= 50pF to 2500pF, measured from+3V to -3V or -3V to +3VVCC= V+ = V- = 0V, VOUT= ±2V4300±1030ΩmAmATransmitter Output ResistanceTransmitter Output Short-CircuitCurrent6_______________________________________________________________________________________

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__________________________________________Typical Operating Characteristics

MAX223/MAX230–MAX241

TRANSMITTER OUTPUT VOLTAGE (VOH)

TRANSMITTER OUTPUTvs. LOAD CAPACITANCE ATTRANSMITTER SLEW RATEVOLTAGE (VOH) vs. VCC

DIFFERENT DATA RATES

vs. LOAD CAPACITANCE

8.5

47.450012.0

60--002 TRANSMITTERS221 TRANSMITTER LOADED22T-A = +25°C022XXLOADEDA7.2AMM11.0VXCC = +5VAMLOADED, R8.07.010.0L = 3kΩC1–C4 = 1μF)s1 TRANSMITTERμ/V9.02 TRANSMITTERS)(V E(LOADED)V(6.8 LOADED THO7.5

3 TRANS- 160kb/sHOAVMITTERSV80kb/sR8.0 WLOADED6.620kb/sELS7.07.0

TA = +25°C6.4TA = +25°CC1–C4 = 1μFVCC = +5V6.03 TRANSMITTERSTRANSMITTER LOADED6.23 TRANSMITTERS LOADED4 TRANSMITTERSLOADS =RL = 3kΩ5.04 TRANSMITTERS LOADED6.5

LOADED3kΩ || 2500pF6.0

C1–C4 = 1μF4.0

4.5

5.05.5

500

1000

1500

2000

2500

500

1000

1500

2000

2500

VCC (V)

LOAD CAPACITANCE (pF)

TRANSMITTER OUTPUT VOLTAGE (VOL)

TRANSMITTER OUTPUT vs. LOAD CAPACITANCE ATTRANSMITTER OUTPUT VOLTAGE (V+, V-)

VOLTAGE (VOL) vs. VCC

DIFFERENT DATA RATES

vs. LOAD CURRENT

-6.07-6.0

8904 TRANS-T0010---A = +25°C000222222XTA = +25°CXXAA8A-6.5MITTERSC1–C4 = 1μFM-6.2MLOADEDTRANSMITTERVCC = +5VMLOADS =-6.43 TRANSMITTERS LOADED6TA = +25°C3kΩ || 2500pFRL = 3kΩVCC = +5V-7.0-6.6C1–C4 = 1μF4C1–C4 = 1μF)))V2VV(((V+ AND V-V- LOADED, LL160kb/s -VV+ LOADED,O-7.5O-6.8VV80kb/s ,0+EQUALLYNO LOADNO LOAD1 TRANS-LOADEDON V+-7.020kb/sV-2ON V--8.0MITTERLOADED-4-7.2

-8.52 TRANS-3 TRANS--6MITTERSMITTERS-7.4LOADEDLOADED-8-9.0

-7.6

-10

ALL TRANSMITTERS UNLOADED4.55.05.5

500

1000

1500

2000

2500

101520253035404550

VCC (V)

LOAD CAPACITANCE (pF)

CURRENT (mA)

V+, V- WHEN EXITING SHUTDOWN

(1μF CAPACITORS)

MAX220-13

V+

OV-

SHDN*

500ms/div

*SHUTDOWN POLARITY IS REVERSED _______________________________________________________________________________________FOR NON MAX241 PARTS

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249

Supply Voltage (VCC)...............................................-0.3V to +6VInput Voltages

TIN‚ ENA, ENB, ENR, ENT, ENRA,

ENRB, ENTA, ENTB..................................-0.3V to (VCC+ 0.3V)RIN.....................................................................................±25VTOUT(Note 5).....................................................................±15VROUT........................................................-0.3V to (VCC+ 0.3V)Short Circuit (one output at a time)

TOUTto GND............................................................ContinuousROUTto GND............................................................Continuous

Continuous Power Dissipation (TA= +70°C)

28-Pin Wide SO (derate 12.50mW/°C above +70°C).............1W40-Pin Plastic DIP (derate 11.11mW/°C above +70°C)...611mW44-Pin PLCC (derate 13.33mW/°C above +70°C)...........1.07WOperating Temperature Ranges

MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°CMAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°CStorage Temperature Range.............................-65°C to +160°CLead Temperature (soldering,10s) (Note 6)....................+300°C

Note 5:Input voltage measured with transmitter output in a high-impedance state, shutdown, or VCC= 0V.Note 6:Maximum reflow temperature for the MAX225/MAX245/MAX246/MAX247 is +225°C.

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249

(MAX225, VCC= 5.0V ±5%; MAX244–MAX249, VCC= +5.0V ±10%, external capacitors C1–C4 = 1µF; TA= TMINto TMAX; unless oth-erwise noted.)

PARAMETERRS-232 TRANSMITTERSInput Logic Threshold LowInput Logic Threshold HighLogic Pullup/lnput CurrentData RateOutput Voltage SwingTables 1a–1dNormal operationShutdown±521.41.410±0.01120±7.5±0.01±0.01300±710M±30±25VCC= 5VVCC= 5VVCC= 5VIOUT= 3.2mAIOUT= -1.0mASourcing VOUT= GNDShrinking VOUT= VCCNormal operation, outputs disabled,Tables 1a–1d, 0V ≤VOUT≤VCC, ENR_ = VCC3.5-2100.230.81.31.80.550.2VCC- 0.2-1030±0.05±0.102.41.070.4±25µA±25ΩmAVVVVkΩVVmAµA50±1640.8VVµAkbpsVCONDITIONSMINTYPMAXUNITSTables 1a–1d, normal operationAll transmitter outputs loaded with 3kΩto GNDENA, ENB, ENT, ENTA, ENTB=VCC,VOUT = ±15VVCC= 0V, VOUT= ±15VOutput Leakage Current (Shutdown)Tables 1a–1dTransmitter Output ResistanceOutput Short-Circuit CurrentRS-232 RECEIVERSRS-232 Input Voltage Operating RangeRS-232 Input Threshold LowRS-232 Input Threshold HighRS-232 Input HysteresisRS-232 Input ResistanceTTL/CMOS Output Voltage LowTTL/CMOS Output Voltage HighTTL/CMOS Output Short-Circuit CurrentTTL/CMOS Output Leakage CurrentVCC= V+ = V- = 0V, VOUT= ±2V (Note 7)VOUT= 0V8_______________________________________________________________________________________

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ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)

(MAX225, VCC= 5.0V ±5%; MAX244–MAX249, VCC= +5.0V ±10%, external capacitors C1–C4 = 1µF; TA= TMINto TMAX; unless oth-erwise noted.)

PARAMETERCONDITIONSMINTYPMAXUNITSPOWER SUPPLY AND CONTROL LOGICOperating Supply VoltageMAX2254.755.25MAX244–MAX2494.55.5VNo loadMAX2251020VCCSupply Current MAX244–MAX2491130(Normal Operation)3kΩloads on MAX22540mAall outputsMAX244–MAX24957Shutdown Supply CurrentTA= +25°C825TA= TMINto TMAX50µALeakage current±1µAControl InputThreshold low1.40.8Threshold high2.41.4VAC CHARACTERISTICSTransition Slew RateCL= 50pF to 2500pF, RL= 3kΩto 7kΩ, VCC= 5V, TA= +25°C,measured from +3V to -3V or -3V to +3V51030V/µsTransmitter Propagation DelaytPHLT1.33.5TLL to RS-232 (Normal Operation), µsFigure 1tPLHT1.53.5Receiver Propagation DelaytPHLR0.61.5TLL to RS-232 (Normal Operation),µsFigure 2tPLHR0.61.5Receiver Propagation Delay tPHLS0.610TLL to RS-232 (Low-Power Mode), µsFigure 2tPLHS3.010Transmitter + to - Propagation Delay Difference (Normal Operation)tPHLT- tPLHT350nsReceiver + to - Propagation Delay Difference (Normal Operation)tPHLR- tPLHR350nsReceiver-Output EnableTime, Figure 3tER100500nsReceiver-Output DisableTime, Figure 3tDR100500nsMAX246–MAX249 Transmitter Enable Time t(excludes charge-pump startup)5µsETMAX225/MAX245–MAX249(includes charge-pump startup)10msTransmitter Disable Time, Figure 4tDT100nsNote 7:The 300Ωminimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or VCC=

0V is 10MΩas is implied by the leakage specification.

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249__________________________________________Typical Operating Characteristics

MAX225/MAX244–MAX249

TRANSMITTER SLEW RATEvs. LOAD CAPACITANCE

MAX220-10OUTPUT VOLTAGE

vs. LOAD CURRENT FOR V+ AND V-MAX220-11TRANSMITTER OUTPUT VOLTAGE (V+, V-)

vs. LOAD CAPACITANCE ATDIFFERENT DATA RATES

8.58.0V+, V (V)7.57.06.5

VCC = 5V WITH ALL TRANSMITTERS DRIVENLOADED WITH 5kΩ10kb/s20kb/s40kb/s60kb/sMAX220-1218TRANSMITTER SLEW RATE (V/μs)161412108642

4VCC = 5V1086OUTPUT VOLTAGE (V)V+ AND V- LOADEDVCC = 5VEXTERNAL CHARGE PUMP1μF CAPACITORS 8 TRANSMITTERSDRIVING 5kΩ AND2000pF AT 20kb/sV+ AND V- LOADEDV+ LOADED0

30EITHER V+ OR V- LOADED9.0

EXTERNAL POWER SUPPLY1μF CAPACITORS 40kb/s DATA RATE 8 TRANSMITTERSLOADED WITH 3kΩ420-2-4-6-8-10

V- LOADED6.05.55.0

200kb/sALL CAPACITIORS 1μF2

LOAD CAPACITANCE (nF)

100kb/s5

LOAD CAPACITANCE (nF)LOAD CURRENT (mA)

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Drivers/Receivers

+3V+3V0V*50%INPUT50%INPUT0VOUTPUTVCC50%50%V+GNDOUTPUT0VV-tPHLRtPLHRtPHLStPLHStPLHTtPHLT*EXCEPT FOR R2 ON THE MAX243 WHERE -3V IS USED.Figure 1. Transmitter Propagation-Delay TimingFigure 2. Receiver Propagation-Delay Timing

ENRRX INRX OUT1kΩXVCC - 2VSHDN+3Va) TEST CIRCUIT150pF0VOUTPUT DISABLE TIME (tEN INPUT+3VDT)0VV+EN+5VOUTPUT ENABLE TIME (tER)0V+3.5V-5VRECEIVERV-OUTPUTS+0.8Va) TIMING DIAGRAMb) ENABLE TIMING+3VENEN INPUT0V1 OR 0TXOUTPUT DISABLE TIME (tDR)V3kΩ50pFOHVOH - 0.5VRECEIVEROUTPUTSVCC - 2VVVOL + 0.5VOLb) TEST CIRCUITc) DISABLE TIMINGFigure 3. Receiver-Output Enable and Disable TimingFigure 4. Transmitter-Output Disable Timing

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249Table 1a. MAX245 Control Pin Configurations

ENT0011

ENR0101

OPERATION STATUSNormal OperationNormal OperationShutdownShutdown

TRANSMITTERS

All ActiveAll ActiveAll 3-StateAll 3-State

All ActiveAll 3-State

All Low-Power Receive ModeAll 3-State

RECEIVERS

Table 1b. MAX245 Control Pin Configurations

ENT001

ENR010

OPERATIONSTATUSNormal OperationNormal OperationShutdown

TRANSMITTERSTA1–TA4All ActiveAll ActiveAll 3-State

TB1–TB4All ActiveAll ActiveAll 3-State

All ActiveRA1–RA4 3-State,RA5 ActiveAll Low-PowerReceive ModeRA1–RA4 3-State,RA5 Low-PowerReceive Mode

RECEIVERS

RA1–RA5

RB1–RB5All ActiveRB1–RB4 3-State,RB5 ActiveAll Low-PowerReceive ModeRB1–RB4 3-State,RB5 Low-PowerReceive Mode

11ShutdownAll 3-StateAll 3-State

Table 1c. MAX246 Control Pin Configurations

ENA001

ENB010

OPERATIONSTATUSNormal OperationNormal OperationShutdown

TRANSMITTERSTA1–TA4All ActiveAll ActiveAll 3-State

TB1–TB4All ActiveAll 3-StateAll Active

All ActiveAll ActiveRA1–RA4 3-State,RA5 ActiveRA1–RA4 3-State,RA5 Low-PowerReceive Mode

RECEIVERS

RA1–RA5

RB1–RB5All ActiveRB1–RB4 3-State,RB5 ActiveAll ActiveRB1–RB4 3-State,RA5 Low-PowerReceive Mode

11ShutdownAll 3-StateAll 3-State

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Table 1d. MAX247/MAX248/MAX249 Control Pin ConfigurationsTRANSMITTERSRECEIVERSENTAENTBENRAENRBOPERATIONMAX247TA1–TA4TB1–TB4RA1–RA4RB1–RB5STATUSMAX248TA1–TA4TB1–TB4RA1–RA4RB1–RB4MAX249TA1–TA3TB1–TB3RA1–RA5RB1–RB50000Normal OperationAll ActiveAll ActiveAll ActiveAll ActiveAll 3-State, except0001Normal OperationAll ActiveAll ActiveAll ActiveRB5 stays active onMAX2470010Normal OperationAll ActiveAll ActiveAll 3-StateAll ActiveAll 3-State, except0011Normal OperationAll ActiveAll ActiveAll 3-StateRB5 stays active onMAX2470100Normal OperationAll ActiveAll 3-StateAll ActiveAll ActiveAll 3-State, except0101Normal OperationAll ActiveAll 3-StateAll ActiveRB5 stays active onMAX2470110Normal OperationAll ActiveAll 3-StateAll 3-StateAll ActiveAll 3-State, except0111Normal OperationAll ActiveAll 3-StateAll 3-StateRB5 stays active onMAX2471000Normal OperationAll 3-StateAll ActiveAll ActiveAll ActiveAll 3-State, except1001Normal OperationAll 3-StateAll ActiveAll ActiveRB5 stays active onMAX2471010Normal OperationAll 3-StateAll ActiveAll 3-StateAll ActiveAll 3-State, except1011Normal OperationAll 3-StateAll ActiveAll 3-StateRB5 stays active onMAX2471100ShutdownAll 3-StateAll 3-StateLow-PowerLow-PowerReceive ModeReceive ModeAll 3-State, except1101ShutdownAll 3-StateAll 3-StateLow-PowerReceive ModeRB5 stays active onMAX2471110ShutdownAll 3-StateAll 3-StateAll 3-StateLow-PowerReceive ModeAll 3-State, except1111ShutdownAll 3-StateAll 3-StateAll 3-StateRB5 stays active onMAX247______________________________________________________________________________________13

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249_______________Detailed Description

The MAX220–MAX249 contain four sections: dualcharge-pump DC-DC voltage converters, RS-232 dri-vers, RS-232 receivers, and receiver and transmitterenable control inputs.

mode, in three-state mode, or when device power isremoved. Outputs can be driven to ±15V. The power-supply current typically drops to 8µA in shutdown mode.The MAX220 does not have pullup resistors to force theoutputs of the unused drivers low. Connect unusedinputs to GND or VCC.

The MAX239 has a receiver three-state control line, andthe MAX223, MAX225, MAX235, MAX236, MAX240,and MAX241 have both a receiver three-state controlline and a low-power shutdown control. Table 2 showsthe effects of the shutdown control and receiver three-state control on the receiver outputs.

The receiver TTL/CMOS outputs are in a high-imped-ance, three-state mode whenever the three-state enableline is high (for the MAX225/MAX235/MAX236/MAX239–MAX241), and are also high-impedance whenever theshutdown control line is high.

When in low-power shutdown mode, the driver outputsare turned off and their leakage current is less than 1µAwith the driver output pulled to ground. The driver outputleakage remains less than 1µA, even if the transmitteroutput is backdriven between 0V and (VCC+ 6V). Below-0.5V, the transmitter is diode clamped to ground with1kΩseries impedance. The transmitter is also zenerclamped to approximately VCC+ 6V, with a seriesimpedance of 1kΩ.

The driver output slew rate is limited to less than 30V/µsas required by the EIA/TIA-232E and V.28 specifica-tions. Typical slew rates are 24V/µs unloaded and10V/µs loaded with 3Ωand 2500pF.

Dual Charge-Pump Voltage Converter

The MAX220–MAX249 have two internal charge-pumpsthat convert +5V to ±10V (unloaded) for RS-232 driveroperation. The first converter uses capacitor C1 to dou-ble the +5V input to +10V on C3 at the V+ output. Thesecond converter uses capacitor C2 to invert +10V to -10V on C4 at the V- output.

A small amount of power may be drawn from the +10V(V+) and -10V (V-) outputs to power external circuitry(see the Typical Operating Characteristicssection),except on the MAX225 and MAX245–MAX247, wherethese pins are not available. V+ and V- are not regulated,so the output voltage drops with increasing load current.Do not load V+ and V- to a point that violates the mini-mum ±5V EIA/TIA-232E driver output voltage whensourcing current from V+ and V- to external circuitry. When using the shutdown feature in the MAX222,MAX225, MAX230, MAX235, MAX236, MAX240,MAX241, and MAX245–MAX249, avoid using V+ and V-to power external circuitry. When these parts are shutdown, V- falls to 0V, and V+ falls to +5V. For applica-tions where a +10V external supply is applied to the V+pin (instead of using the internal charge pump to gen-erate +10V), the C1 capacitor must not be installed andthe SHDNpin must be tied to VCC. This is because V+is internally connected to VCCin shutdown mode.

RS-232 Receivers

EIA/TIA-232E and V.28 specifications define a voltagelevel greater than 3V as a logic 0, so all receivers invert.Input thresholds are set at 0.8V and 2.4V, so receiversrespond to TTL level inputs as well as EIA/TIA-232E andV.28 levels.

The receiver inputs withstand an input overvoltage upto ±25V and provide input terminating resistors with

RS-232 Drivers

The typical driver output voltage swing is ±8V whenloaded with a nominal 5kΩRS-232 receiver and VCC=+5V. Output swing is guaranteed to meet the EIA/TIA-232E and V.28 specification, which calls for ±5V mini-mum driver output levels under worst-case conditions.These include a minimum 3kΩload, VCC= +4.5V, andmaximum operating temperature. Unloaded driver out-put voltage ranges from (V+ -1.3V) to (V- +0.5V).

Input thresholds are both TTL and CMOS compatible.The inputs of unused drivers can be left unconnectedsince 400kΩinput pullup resistors to VCCare built in(except for the MAX220). The pullup resistors force theoutputs of unused drivers low because all drivers invert.The internal input pullup resistors typically source 12µA,except in shutdown mode where the pullups are dis-abled. Driver outputs turn off and enter a high-imped-ance state—where leakage current is typicallymicroamperes (maximum 25µA)—when in shutdown

Table 2. Three-State Control of Receivers

PARTMAX223SHDNSHDN__LowHighHigh__ENXLowHigh__EN(R)__LowHighLowHighXRECEIVERSHigh ImpedanceActiveHigh ImpedanceHigh ImpedanceActiveHigh ImpedanceActiveHigh ImpedanceMAX225MAX235MAX236MAX240__LowLowHigh__________________________________________________________________________________________元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232

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nominal 5kΩvalues. The receivers implement Type 1interpretation of the fault conditions of V.28 andEIA/TIA-232E.

The receiver input hysteresis is typically 0.5V with aguaranteed minimum of 0.2V. This produces clear out-put transitions with slow-moving input signals, evenwith moderate amounts of noise and ringing. Thereceiver propagation delay is typically 600ns and isindependent of input swing direction.

Shutdown—MAX222–MAX242

On the MAX222‚ MAX235‚ MAX236‚ MAX240‚ andMAX241‚ all receivers are disabled during shutdown.On the MAX223 and MAX242‚ two receivers continue tooperate in a reduced power mode when the chip is inshutdown. Under these conditions‚ the propagationdelay increases to about 2.5µs for a high-to-low inputtransition. When in shutdown, the receiver acts as aCMOS inverter with no hysteresis. The MAX223 andMAX242 also have a receiver output enable input (ENfor the MAX242 and EN for the MAX223) that allowsreceiver output control independent of SHDN(SHDNfor MAX241). With all other devices‚ SHDN(SHDN forMAX241) also disables the receiver outputs.

The MAX225 provides five transmitters and fivereceivers‚ while the MAX245 provides ten receivers andeight transmitters. Both devices have separate receiverMAX220–MAX249Low-Power Receive Mode

The low-power receive mode feature of the MAX223,MAX242, and MAX245–MAX249 puts the IC into shut-down mode but still allows it to receive information. Thisis important for applications where systems are periodi-cally awakened to look for activity. Using low-powerreceive mode, the system can still receive a signal thatwill activate it on command and prepare it for communi-cation at faster data rates. This operation conservesand transmitter-enable controls. The charge pumpssystem power.

turn off and the devices shut down when a logic high isapplied to the ENT input. In this state, the supply cur-Negative Threshold—MAX243

rent drops to less than 25µA and the receivers continueThe MAX243 is pin compatible with the MAX232A, differ-to operate in a low-power receive mode. Driver outputsing only in that RS-232 cable fault protection is removedenter a high-impedance state (three-state mode). Onon one of the two receiver inputs. This means that controlthe MAX225‚ all five receivers are controlled by thelines such as CTS and RTS can either be driven or leftENRinput. On the MAX245‚ eight of the receiver out-floating without interrupting communication. Differentputs are controlled by the ENRinput‚ while the remain-cables are not needed to interface with different pieces ofing two receivers (RA5 and RB5) are always active.equipment.

RA1–RA4 and RB1–RB4 are put in a three-state modeThe input threshold of the receiver without cable faultwhen ENRis a logic high.

protection is -0.8V rather than +1.4V. Its output goesReceiver and Transmitter Enable

positive only if the input is connected to a control lineControl Inputs

that is actively driven negative. If not driven, it defaultsThe MAX225 and MAX245–MAX249 feature transmitterto the 0 or “OK to send” state. Normally‚ the MAX243’sand receiver enable controls.

other receiver (+1.4V threshold) is used for the data line(TD or RD)‚ while the negative threshold receiver is con-The receivers have three modes of operation: full-speednected to the control line (DTR‚ DTS‚ CTS‚ RTS, etc.). receive (normal active)‚ three-state (disabled)‚ and low-power receive (enabled receivers continue to functionOther members of the RS-232 family implement theat lower data rates). The receiver enable inputs controloptional cable fault protection as specified by EIA/TIA-the full-speed receive and three-state modes. The232E specifications. This means a receiver output goestransmitters have two modes of operation: full-speedhigh whenever its input is driven negative‚ left floating‚transmit (normal active) and three-state (disabled). Theor shorted to ground. The high output tells the serialtransmitter enable inputs also control the shutdowncommunications IC to stop sending data. To avoid this‚mode. The device enters shutdown mode when allthe control lines must either be driven or connectedtransmitters are disabled. Enabled receivers function inwith jumpers to an appropriate positive voltage level.

the low-power receive mode when in shutdown.

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元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249Tables 1a–1d define the control states. The MAX244has no control pins and is not included in these tables. The MAX246 has ten receivers and eight drivers withtwo control pins, each controlling one side of thedevice. A logic high at the A-side control input (ENA)causes the four A-side receivers and drivers to go intoa three-state mode. Similarly, the B-side control input(ENB) causes the four B-side drivers and receivers togo into a three-state mode. As in the MAX245, one A-side and one B-side receiver (RA5 and RB5) remainactive at all times. The entire device is put into shut-down mode when both the A and B sides are disabled(ENA= ENB= +5V).

The MAX247 provides nine receivers and eight driverswith four control pins. The ENRAand ENRBreceiverenable inputs each control four receiver outputs. TheENTAand ENTBtransmitter enable inputs each controlfour drivers. The ninth receiver (RB5) is always active.The device enters shutdown mode with a logic high onboth ENTAand ENTB.

The MAX248 provides eight receivers and eight driverswith four control pins. The ENRAand ENRBreceiverenable inputs each control four receiver outputs. TheENTAand ENTBtransmitter enable inputs control fourdrivers each. This part does not have an always-activereceiver. The device enters shutdown mode and trans-mitters go into a three-state mode with a logic high onboth ENTAand ENTB.

The MAX249 provides ten receivers and six drivers withfour control pins. The ENRAand ENRBreceiver enableinputs each control five receiver outputs. The ENTAand ENTBtransmitter enable inputs control three dri-vers each. There is no always-active receiver. Thedevice enters shutdown mode and transmitters go intoa three-state mode with a logic high on both ENTAandENTB. In shutdown mode, active receivers operate in alow-power receive mode at data rates up to 20kb/s.

__________Applications Information

Figures 5 through 25 show pin configurations and typi-cal operating circuits. In applications that are sensitiveto power-supply noise, VCCshould be decoupled toground with a capacitor of the same value as C1 andC2 connected as close as possible to the device.

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+5V INPUTC3TOP VIEWC516C1+116VCC1C1C1+VCCV+2+10VV+215GND3C1-+5V TO +10V4VOLTAGE DOUBLERC1-314T1OUTC2C2+5+10V TO -10VC2-VOLTAGE INVERTERV-6-10VC2+4MAX220C413R1IN+5VC2-5MAX232AMAX23212R1OUT400kΩV-611T1IN11T1INT1OUT14T2OUT710T2INTTL/CMOS+5VRS-232INPUTS400kΩOUTPUTSR2IN89R2OUT10T2INT2OUT7DIP/SO12R1OUTR1IN13CAPACITANCE (μF)TTL/CMOS5kΩRS-232DEVICEC1C2C3C4C5OUTPUTSINPUTSMAX2200.0470.330.330.330.339R2OUTR2IN8MAX2321.01.01.01.01.0MAX232A 0.10.10.10.10.15kΩGND15Figure 5. MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit

TOP VIEW+5V INPUTC3ALL CAPACITORS = 0.1μFC5172C1+VCC(N.C.) EN1C120SHDN4+5V TO +10V3C1-VOLTAGE DOUBLERV++10V(N.C.) EN5118SHDNC1+219VCCC2+C276C1+C2-+10V TO -10VV--10V217VVOLTAGE INVERTERC4CCV+318GNDV+316GNDC1-417T1OUT+5V400kΩ(EXCEPT MAX220)C1-415T1OUTC2+5MAX22216N.C.12T1INT1OUT15C2+5MAX222C2-MAX242MAX24214R1IN615R1INTTL/CMOS+5VRS-232C2-613R1OUTV-714R1OUTINPUTS400kΩ(EXCEPT MAX220)OUTPUTSV-11T2712T1INT2OUT8INT2OUT813N.C.T2OUT811T2INR2IN912T1IN13R1OUTR1IN14R2IN910R2OUTR2OUT1011T2INTTL/CMOS5kΩRS-232OUTPUTSINPUTSDIP/SOSSOP10R2OUTR2IN91(N.C.)EN5kΩ( ) ARE FOR MAX222 ONLY.PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY.GNDSHDN1816Figure 6. MAX222/MAX242 Pin Configurations and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5VTOP VIEW0.1+5VT1IN+5V400kΩ4T2IN+5V400kΩ25T3IN+5V400kΩ24T4IN+5V400kΩ23265T5INENTT5OUTR1OUTR1IN5kΩ6R2OUTR2IN5kΩ7R3OUTR3IN5kΩ22R4OUTR4IN5kΩ21R5OUTR5IN5kΩ12ENRENR201989T5OUT161510T4OUT17T3OUT18T2OUT12T1OUT28VCC400kΩ3ENR1ENR2T1IN3T2IN4R1OUT5R2OUT6R3OUT7R3IN8R2IN9R1IN10T1OUT11T2OUT12GND13GND1428VCC27VCC26ENT25T3IN1127VCCMAX22524T4IN23T5IN22R4OUT21R5OUT20R5IN19R4IN18T3OUT17T4OUT16T5OUT15T5OUTSOMAX225 FUNCTIONAL DESCRIPTION5 RECEIVERS5 TRANSMITTERS2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT)PINS (ENR, GND, VCC, T5OUT) ARE INTERNALLY CONNECTED.CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER.GND13GND14Figure 7. MAX225 Pin Configuration and Typical Operating Circuit

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TOP VIEW+5V INPUT1.0μF1211C1+V1.0μFCC1.0μFV+131415C1-VOLTAGE DOUBLER+5V TO +10VC2+1.0μF16C2-VOLTAGE INVERTER+10V TO -10VV-171.0μF+5V400kΩ7T1INT1T1OUT2T3OUT128T4OUT+5VT1OUT227R3IN400kΩT2OUT326R3OUT6T2INT2T2OUT3R2IN425SHDN (SHDN)+5VTTL/CMOSR2OUT524EN (EN)INPUTS400kΩRS-232OUTPUTST2IN6MAX223MAX24123R4IN*20T3INT3T3OUT1T1IN722R4OUT*+5VR1OUT821T4IN400kΩR1IN920T3IN21T4INT4T4OUT28GND1019R5OUT*VCC1118R5IN*8R1OUTR1R1IN9C1+1217V-5kΩV+1316C2-5R2OUTC1-1415C2+R2R2IN45kΩWide SO/SSOPLOGIC26R3OUTOUTPUTSR3R3IN27RS-2325kΩINPUTS22R4OUTR4R4IN235kΩ19R5OUTR5R5IN18*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN5kΩNOTE: PIN LABELS IN ( ) ARE FOR MAX24124EN (EN)SHDN25GND(SHDN)10Figure 8. MAX223/MAX241 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW8C1+10C1-1.0μF+5V INPUT71.0μFT3OUT120T4OUT19T5IN18N.C.17SHDN5T1IN+5V4T2IN+5VTTL/CMOSINPUTS14T3IN+5V400kΩ15T4IN+5VT4400kΩ19T5INN.C.x18T5GND6T5OUT1617SHDNT4OUT201.0μFVCCV+9+5V TO +10VVOLTAGE DOUBLERV-131.0μF1.0μFT1OUT2T2OUT3T2IN4T1IN5GND6VCC7C1+8V+9C1-1011+10V TO -10VC2+12VOLTAGE INVERTERC2-+5V400kΩT1400kΩT2400kΩT3T1OUT2MAX23016T5OUT15T4IN14T3IN13V-12C2-11C2+T2OUT3T3OUT1RS-232OUTPUTSDIP/SOFigure 9. MAX230 Pin Configuration and Typical Operating Circuit

+5V INPUTTOP VIEW11.0μFC+1C-V-2314V+13VCC12GNDC+1C-2V-3T2OUT4R2IN5R2OUT6T2IN7N.C.816V+15VCC14GNDTTL/CMOSINPUTS7(11)TTL/CMOSOUTPUTS9(10)821.0μF13 (15)C1+C1-+5V400kΩT1IN+5V400kΩT2INR1OUTT2R15kΩ6R2OUTT1VCC+12V TO -12VVOLTAGE CONVERTER+7.5V TO +12VV+V-143(16)C21.0μF(13)T1OUT11T2OUT4R2IN5R2OUT6T2IN7MAX23111T1OUT10R1IN98R1OUTT1INMAX23113T1OUT12R1IN11R1OUT10T1IN9N.C.RS-232OUTPUTST2OUT4R1IN10(12)RS-232INPUTSR2IN55kΩDIPSOR2GNDPIN NUMBERS IN ( ) ARE FOR SO PACKAGE.12 (14)Figure 10. MAX231 Pin Configurations and Typical Operating Circuit20

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+5V INPUT1.0μFTOP VIEW7+5VVCC400kΩT2T1IN120R2OUT2T1INOUT5T1IN219R2+5VINTTL/CMOSINPUTS400kΩRS-232R1OUT318T2OUTOUTPUTS1T2INT2OUT18R1IN417V-3R1OUTR1T1IN4OUT5GNDMAX233AMAX23316C2-615C2+TTL/CMOS5kΩOUTPUTSRS-232VCC714V+ (C1-)INPUTS(V+) C1+813C1- (C1+)20R2OUTR2IN19GND912V- (C2+)DO NOT MAKE8 (13)C1+5kΩC2+11 (12)(V-) CS-1011C2+ (C2-)CONNECTIONS TOTHESE PINS13 (14)C1-12 (10)C2+15INTERNAL -10V-C2-16DIP/SOPOWER SUPPLY17V-C2-10 (11)INTERNAL +10V14 (8)POWER SUPPLYV+GNDGND69( ) ARE FOR SO PACKAGE ONLY.Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit

+5V INPUTTOP VIEW1.0μF761.0μFC1+VCC81.0μF9+5V TO +10VV+C1-VOLTAGE DOUBLER10C2++10V TO -10V121.0μF11VOLTAGE INVERTERV-T1OUT116T3OUTC2-1.0μFT2+5VOUT215T4OUT400kΩT2IN314T4IN4T1INT1T1OUT1T1IN4MAX23413T3IN+5VGND512V-400kΩVCC611C2-3T2INT2T2OUT2C1+710C2+TTL/CMOS+5VRS-232V+89C1-INPUTS400kΩOUTPUTS13T3INT3T3OUT16DIP/SO+5V400kΩ14T4INT4T4OUT15GND5Figure 12. MAX234 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5V INPUTTOP VIEW1.0μF12+5V8T1IN+5V400kΩ7T2IN+5V400kΩTTL/CMOSINPUTS15T3IN+5V400kΩ16T4IN+5V22T5INT4400kΩT5T5OUT19T4OUT1T3T3OUT2RS-232OUTPUTST2T2OUT4VCC400kΩT1T1OUT3T4OUT1T3OUT2T1OUT3T2OUT4R2IN5R2OUT6T2IN7T1IN8R1OUT9R1IN10GND11VCC1224R3IN23R3OUT22T5IN21SHDNMAX23520EN19T5OUT18R4IN17R4OUT16T4IN15T3IN14R5OUT13R5IN9R1OUTT1R1IN105kΩ6R2OUTR2R2IN55kΩDIPTTL/CMOSOUTPUTS23R3OUTR3R3IN245kΩRS-232INPUTS17R4OUTR4R4IN185kΩ14R5OUTR5R5IN135kΩSHDN2120ENGND11Figure 13. MAX235 Pin Configuration and Typical Operating Circuit

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Drivers/Receivers

TOP VIEW+5V INPUT1.0μF91.0μF10C1+VCCV+111.0μF12+5V TO +10VC1-VOLTAGE DOUBLER13C2+V-151.0μF14+10V TO -10VC2-VOLTAGE INVERTER1.0μF+5V400kΩ7T1INT1T1OUT2T3OUT124T4OUT+5VT1OUT223R2IN400kΩT2OUT322R26T2OUTINT2T2OUT3R1IN421SHDNTTL/CMOS+5VRS-232R1OUT5MAX23620ENINPUTS400kΩOUTPUTST219T418T3ININ6INT3T3OUT1T1IN718T3IN+5VGND817R3400kΩOUT19T4V16R3INCC9INT4T4OUT24C1+1015V-V+1114C2-5R1OUTR1R1IN4C1-1213C2+5kΩDIP/SOTTL/CMOS22R2OUTR2R2IN23RS-232OUTPUTSINPUTS5kΩ17R3OUTR3R3IN165kΩ20ENSHDN21GND8Figure 14. MAX236 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW+5V INPUT1.0μF9101.0μF12131.0μF14C1+C1-C2+C2-+5V400kΩT3OUT1T1OUT2T2OUT3R1IN4R1OUT5T2IN6T1IN7GND8VCC9C1+10V+11C1-1224T4OUT23R2IN22R2OUT21T5IN6T2IN+5V7T1IN+5VT1400kΩT2400kΩTTL/CMOSINPUTS18T3IN+5VT3400kΩ19T4IN+5VT4400kΩ21T5INT5T5OUT20T4OUT24T3OUT1RS-232OUTPUTST2OUT3T1OUT2VCC+5V TO +10VVOLTAGE DOUBLER+10V TO -10VVOLTAGE INVERTERV+111.0μFV-151.0μFMAX23720T5OUT19T4IN18T3IN17R3OUT16R3IN15V-14C2-13C2+DIP/SO5R1OUTR1R1IN45kΩTTL/CMOSOUTPUTS22R2OUTR2R2IN5kΩ23RS-232INPUTS17R3OUTR3R3IN5kΩ16GND8Figure 15. MAX237 Pin Configuration and Typical Operating Circuit

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Drivers/Receivers

TOP VIEW+5V INPUT1.0μF91.0μF10C1+VCC1.0μF12+5V TO +10VV+11C1-VOLTAGE DOUBLER13C2+1.0μF14+10V TO -10VV-15C2-VOLTAGE INVERTER1.0μF+5V400kΩT2OUT124T3OUT5T1INT1T1OUT2T1OUT223R3IN+5V400kΩR2IN322R3OUTR2OUT421T418T2ININT2T2OUT1T1IN5MAX23820T4OUTTTL/CMOS+5VRS-232INPUTS400kΩOUTPUTSR1OUT619T3IN19T3INR118T2T3T3OUT24IN7IN+5VGND817R4OUT400kΩVCC916R4IN21T4INT4T4OUT20C1+1015V-V+1114C2-C1-1213C2+6R1OUTR1R1IN7DIP/SO5kΩ4R2OUTR2R2IN3TTL/CMOS5kΩRS-232OUTPUTSINPUTS22R3OUTR3R3IN235kΩ17R4OUTR4R4IN165kΩGND8Figure 16. MAX238 Pin Configuration and Typical Operating Circuit______________________________________________________________________________________25

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW+5V INPUT1.0μF461.0μF7C1+C1-+5V400kΩ24T1INR1OUT1R1IN2GND3VCC4V+5C+6C-7V-8R5IN9R5OUT10R4OUT11R4IN1224T1IN23T2IN22R2OUT21R2INTTL/CMOSINPUTS23T2IN+5V400kΩ16T3INT3T3OUT13+5V400kΩT2T2OUT20RS-232OUTPUTST1T1OUT19VCC+10V TO -10VVOLTAGE INVERTER5V+V-81.0μF7.5V TO 13.2VINPUTMAX23920T2OUT19T1OUT18R3IN17R3OUT16T3IN15N.C.14EN13T3OUT1R1OUTR1R1IN25kΩ22R2OUTR2R2IN215kΩDIP/SOTTL/CMOSOUTPUTS17R3OUTR3R3IN5kΩ18RS-232INPUTS11R4OUTR4R4IN5kΩ1210R5OUTR5R5IN5kΩN.C.914ENGND315Figure 17. MAX239 Pin Configuration and Typical Operating Circuit26______________________________________________________________________________________

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Drivers/Receivers

+5V INPUTTOP VIEW1.0μF25191.0μFC1+VCC1.0μF27V+2628C1-VOLTAGE DOUBLER+5V TO +10VC2+1.0μF29C2-VOLTAGE INVERTER+5V TO -10VV-301.0μF+5V400kΩ15T1INT1T1OUT7+5V400kΩ14T2INT2T2OUT8TTTTT.UUUUCN.ICOOOONUION.I.2.N2134335C.RNTTTTRRTN+5V400kΩTTL/CMOS37T3IN1011987654321INPUTST3T3OUT6RS-232OUTPUTS+5V400kΩN.C.1244N.C.38T4INT4OUT5R2OUT1343SHDNT4T2IN1442EN+5VT1IN1541T5OUT400kΩR1OUT1640R4IN2T5IN41R1IN1739R4T5T5OUTOUTGND18MAX24038T4IN16R1V37T3OUTR1IN17CC19INR1N.C.2036R5OUT5kΩN.C.2135R5INN.C.2234N.C.13R2OUTR2R2IN1034567890123222222233335kΩTTL/CMOS3R3OUT4RS-232..CC++-...1+2-..1V2CCCNNCCCCV...NNNOUTPUTSR3R3IN5kΩINPUTSPlastic FP39R4OUTR4R4IN405kΩ36R5OUTR5R5IN355kΩ42ENGNDSHDN4318Figure 18. MAX240 Pin Configuration and Typical Operating Circuit______________________________________________________________________________________27

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW+5V INPUT0.1μFALL CAPACITORS = 0.1μF0.1μF10.1μFC1+1V+2C1-3C2+4C2-5V-6T2OUT7R2IN816VCC15GND14T1OUT16C1+VCC+5V TO +10VVOLTAGE DOUBLER+10V TO -10VVOLTAGE INVERTER+5V400kΩV+2+10V3C1-4C2+5C2-0.1μFV-6-10V0.1μFMAX24313R1IN12R1OUT11T1IN10T2IN9R2OUTTTL/CMOSINPUTS10T2IN11T1IN+5VT1OUT14RS-232OUTPUTST2OUT7400kΩDIP/SO12R1OUTTTL/CMOSOUTPUTS9R2OUTRECEIVER INPUT≤ -3VOPEN≥ +3VR1 OUTPUTHIGHHIGHLOWR2 OUTPUTHIGHLOWLOW5kΩGND155kΩR2IN8R1IN13RS-232INPUTSFigure 19. MAX243 Pin Configuration and Typical Operating Circuit

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Drivers/Receivers

+5VTOP VIEW1μF1μF2120C1+22TTTTTTTTUUUUUUUU1μFVCCNN23OOOOOOOONC1-+5V TO +10V VOLTAGE DOUBLERV+III4543211234526AAAAAABBBBB24RRTTTTTTTTR1μFC2+V-1μF654321444342414025C2-+10V TO -10V VOLTAGE INVERTER2TA1OUT+5V+5VTB1OUT44400kΩRA3IN739RB4IN15TA1INTB1IN30RA2IN838RB3IN2TA2OUT+5V+5VTB2OUT43RA1IN937RB2IN400kΩRA1OUT1036RB1IN16TA2INTB2IN29RA2OUT11RA3OUT12MAX24435RB1OUT34RB2OUT3TA3OUT+5V+5VTB3OUT42RA4OUT1333RB3OUT400kΩRA5OUT1432RB4OUT17TA3INTB3IN28TA1IN1531RB5OUT4TA4OUT+5V+5VTB4OUT41TA2IN1630TB1IN400kΩTA3IN1729TB2IN18TA4INTB4IN2718192021222324252627289RA1INRB1IN36NDC++-+--I4NC1V122VNNIIAGVCCCC43BBTTT5kΩ5kΩPLCC10RA1OUTRB1OUT358RA2INRB2IN37MAX249 FUNCTIONAL DESCRIPTION5kΩ5kΩ10 RECEIVERS11RA2OUTRB2OUT34 5 A-SIDE RECEIVERS7RA3INR 5 B-SIDE RECEIVERSB3IN388 TRANSMITTERS5kΩ5kΩ 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS12RA3OUTRB3OUT33NO CONTROL PINS6RA4INRB4IN395kΩ5kΩ13RA4OUTRB4OUT325RA5INRB5IN405kΩ5kΩ14RA5OUTRGNDB5OUT3119Figure 20. MAX244 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5VTOP VIEW1μF40VCC400kΩ2TA1IN17TA2OUT3TA2IN18TA3OUT4TA3IN19TA4OUT5TA4IN1ENR11RA1IN5kΩ10RA1OUT12RA2IN5kΩ9RA2OUT+5V400kΩTB4IN35ENT39RB1IN295kΩRB1OUT30RB2IN285kΩRB2OUT31RB3IN275kΩRB3OUT32RB4IN265kΩRB4OUT33RB5IN255kΩRB5OUT34GND20+5V+5V400kΩTB3IN36TB4OUT21+5V+5V400kΩTB2IN37TB3OUT22+5VTB1IN38TB2OUT23ENR TA1IN TA2IN TA3IN TA4INRA5OUTRA4OUT RA3OUT RA2OUT 123456789403938373635VCCENTTB1INTB2INTB3INTB4INRB5OUTRB4OUTRB3OUTRB2OUTRB1OUTRB1INRB2INRB3INRB4INRB5INTB1OUTTB2OUTTB3OUTTB4OUT16TA1OUT+5V+5VTB1OUT24MAX2453433323130292827262524232221RA1OUT 10RA1IN 11RA2IN 12RA3IN 13RA4IN 14RA5IN 15TA1OUT 16TA2OUT 17TA3OUT 18TA4OUT 19GND 20DIP13RA3IN5kΩMAX245 FUNCTIONAL DESCRIPTION10 RECEIVERS 5 A-SIDE RECEIVERS (RA5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE)8 TRANSMITTTERS 4 A-SIDE TRANSMITTERS2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT)8RA3OUT14RA4IN5kΩ7RA4OUT15RA5IN5kΩ6RA5OUTFigure 21. MAX245 Pin Configuration and Typical Operating Circuit30

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Drivers/Receivers

+5VTOP VIEW1μF40ENA 140VCC+5VVCC+5VTA1IN 239ENB16TA1OUTTB1OUT24T400kΩA2IN 338TB1IN2TA1INTB1IN38TA3IN 437TB2IN+5V+5VTA4IN536TB3IN17TA2OUTTB2OUT23R400kΩA5OUT635TB4IN3TA2INTB2IN37RA4OUT 7MAX24634RB5OUT+5V+5VRA3OUT 833RB4OUT18TA3OUTTB3OUT22RA2OUT 932RB3OUT400kΩ4TA3INTB3IN36RA1OUT 1031RB2OUT+5V+5VRA1IN 1130RB1OUT19TA4OUTTB4OUT21RA2IN 1229RB1IN400kΩ5TRRA4INTB4IN35A3IN 1328B2IN1ENAENBRR39A4IN 1427B3IN11RA1INRB1IN29RA5IN 1526RB4INTA1OUT 1625RB5IN5kΩ5kΩTA2OUT 1724TB1OUT10RTTA1OUTRB1OUT30A3OUT 1823B2OUT12RA2INRB2IN28TA4OUT 1922TB3OUTGND 2021TB4OUT5kΩ5kΩDIP9RA2OUTRB2OUT3113RA3INRB3IN27MAX246 FUNCTIONAL DESCRIPTION5kΩ5kΩ10 RECEIVERS 5 A-SIDE RECEIVERS (R8RA3OUTRB3OUT32A5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (R14RB5 ALWAYS ACTIVE)A4INRB4IN268 TRANSMITTERS 4 A-SIDE TRANSMITTERS5kΩ5kΩ 4 B-SIDE TRANSMITTERS7RA4OUTRB4OUT332 CONTROL PINS15RA5INRB5IN25 ENABLE A-SIDE (ENA) ENABLE B-SIDE (ENB)5kΩ5kΩ6RA5OUTGNDRB5OUT3420Figure 22. MAX246 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5VTOP VIEW1μF401ENTAENTA TA1IN TA2IN TA3IN TA4INRB5OUTRA4OUT RA3OUT RA2OUT 123456789403938373635VCCENTBTB1INTB2INTB3INTB4INRB4OUTRB3OUTRB2OUTRB1OUTENRB RB1INRB2INRB3INRB4INRB5INTB1OUTTB2OUTTB3OUTTB4OUT10RA1OUT13RA2INRB1OUT31RB2IN285kΩRB2OUT32RB3IN275kΩRB3OUT33RB4IN265kΩRB4OUT34GND20ENRB3012RA1IN5kΩRB1IN295kΩ5kΩ19TA4OUT400kΩ5TA4IN6RB5OUTTB4IN35RB5IN2518TA3OUT400kΩ4TA3IN+5V+5VTB4OUT21TB3IN362TA1IN+5V17TA2OUT400kΩ3TA2IN+5V+5VTB3OUT22TB2IN37+5VTB2OUT2316TA1OUT400kΩTB1IN38VCC+5V+5VENTB39TB1OUT24MAX2473433323130292827262524232221RA1OUT 10ENRA 11RA1IN 12RA2IN 13RA3IN 14RA4IN 15TA1OUT 16TA2OUT 17TA3OUT 18TA4OUT 19GND 20DIP5kΩMAX247 FUNCTIONAL DESCRIPTION9 RECEIVERS 4 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE)8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB)9RA2OUT14RA3IN5kΩ8RA3OUT15RA4IN5kΩ7RA4OUT11ENRAFigure 23. MAX247 Pin Configuration and Typical Operating Circuit32

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Drivers/Receivers

TOP VIEW+5V1μF1μF2120TTTTTTTTC1+VCCNNUUUUUUUU23C1-V+22OOOOOOOON1μFIII34432112344+5V TO +10V VOLTAGE DOUBLERAAAAAABBBABRRTTTTTTTTR24C2+V-261μF1μF654321444342414025C2-+10V TO -10V VOLTAGE INVERTER18ENTAENTB27+5V+5V1TA1OUTTB1OUT44RA2IN739RB3IN400kΩRA1IN838RB2IN14TA1INTB1IN31ENRA937RB1IN+5V+5VRA1OUT1036ENRB2TA2OUTTB2OUT43RA2OUT11400kΩMAX24835RB1OUTRA3OUT1234RB2OUT15TA2INTB2IN30RA4OUT1333RB3OUT+5V+5VTA1IN1432RB4OUT3TA3OUTTB3OUT42TA2IN1531TB1IN400kΩT16TA3IN1630TB2INA3INTB3IN29TA4IN1729TB3IN+5V+5V4TA4OUTTB4OUT411819202122232425262728400kΩADC++---17TA4INTB4IN28TNC1V1+22VBNTINGVCCCCN4EEBTPLCC8RA1INRB1IN375kΩ5kΩMAX248 FUNCTIONAL DESCRIPTION10RA1OUTRB1OUT358 RECEIVERS7RA2INRB2IN38 4 A-SIDE RECEIVERS 4 B-SIDE RECEIVERS5kΩ5kΩ8 TRANSMITTERS 4 A-SIDE TRANSMITTERS11RA2OUTRB2OUT34 4 B-SIDE TRANSMITTERS6RA3INRB3IN394 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA)5kΩ5kΩ ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA)12RA3OUTRB3OUT33 ENABLE RECEIVER B-SIDE (ENTB)5RA4INRB4IN405kΩ5kΩ13RA4OUTRB4OUT329ENRAGNDENRB3619Figure 24. MAX248 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW1μF21TA3OUTTA2OUTTA1OUTTB1OUTTB2OUTTB3OUTRA3INRA4INRA5INRB5INRB4IN1μF1μF20VCC+5V TO +10V VOLTAGE DOUBLER+10V TO -10V VOLTAGE INVERTER+5V+5VENTB27TB1OUT44400kΩ15TA1IN+5V2TA2OUT400kΩ16TA2IN+5V3TA3OUT400kΩ17TA3IN8RA1IN5kΩ10RA1OUT7RA2IN5kΩTB3IN28RB1IN375kΩRB1OUT35RB2IN385kΩRB2OUT34RB3IN395kΩRB3OUT33RB4IN405kΩRB4OUT32RB5IN415kΩRB5OUT31GND19ENRB36+5VTB3OUT42TB2IN29+5VTB2OUT43TB1IN30V+V-22261μFC1+23C1-24C2+25C2-18ENTA1TA1OUTRA2INRA1INENRARA1OUTRA2OUTRA3OUTRA4OUTRA5OUTTA1INTA2INTA3IN7891011121314151617181920212223242526272839RB3IN38RB2IN37RB1IN36ENRB35RB1OUT34RB2OUT33RB3OUT32RB4OUT31RB5OUT30TB1IN29TB2IN+5V1μF6543214443424140MAX249GNDC1+C1-C2+C2-V+V-PLCCTB3INENTAENTBVCCMAX249 FUNCTIONAL DESCRIPTION10 RECEIVERS 5 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS6 TRANSMITTERS 3 A-SIDE TRANSMITTERS 3 B-SIDE TRANSMITTERS4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB)11RA2OUT6RA3IN5kΩ12RA3OUT5RA4IN5kΩ13RA4OUT4RA5IN5kΩ14RA5OUT9ENRAFigure 25. MAX249 Pin Configuration and Typical Operating Circuit34

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Drivers/Receivers

___________________________________________Ordering Information (continued)

PARTTEMP RANGEPIN-PACKAGEPARTTEMP RANGEPIN-PACKAGEMAX222CPN0°C to +70°C18 Plastic DIPMAX232AC/D0°C to +70°CDice*MAX222CWN0°C to +70°C18 Wide SOMAX232AEPE-40°C to +85°C16 Plastic DIPMAX222C/D0°C to +70°CDice*MAX232AESE-40°C to +85°C16 Narrow SOMAX222EPN-40°C to +85°C18 Plastic DIPMAX232AEWE-40°C to +85°C16 Wide SOMAX222EWN-40°C to +85°C18 Wide SOMAX232AEJE-40°C to +85°C16 CERDIPMAX222EJN-40°C to +85°C18 CERDIPMAX232AMJE-55°C to +125°C16 CERDIPMAX222MJN-55°C to +125°C18 CERDIPMAX232AMLP-55°C to +125°C20 LCCMAX223CAI0°C to +70°C28 SSOPMAX233CPP0°C to +70°C20 Plastic DIPMAX223CWI0°C to +70°C28 Wide SOMAX233EPP-40°C to +85°C20 Plastic DIPMAX223C/D0°C to +70°CDice*MAX233ACPP0°C to +70°C20 Plastic DIPMAX223EAI-40°C to +85°C28 SSOPMAX233ACWP0°C to +70°C20 Wide SOMAX223EWI-40°C to +85°C28 Wide SOMAX233AEPP-40°C to +85°C20 Plastic DIPMAX225CWI0°C to +70°C28 Wide SOMAX233AEWP-40°C to +85°C20 Wide SOMAX225EWI-40°C to +85°C28 Wide SOMAX234CPE0°C to +70°C16 Plastic DIPMAX230CPP0°C to +70°C20 Plastic DIPMAX234CWE0°C to +70°C16 Wide SOMAX230CWP0°C to +70°C20 Wide SOMAX234C/D0°C to +70°CDice*MAX230C/D0°C to +70°CDice*MAX234EPE-40°C to +85°C16 Plastic DIPMAX230EPP-40°C to +85°C20 Plastic DIPMAX234EWE-40°C to +85°C16 Wide SOMAX230EWP-40°C to +85°C20 Wide SOMAX234EJE-40°C to +85°C16 CERDIPMAX230EJP-40°C to +85°C20 CERDIPMAX234MJE-55°C to +125°C16 CERDIPMAX230MJP-55°C to +125°C20 CERDIPMAX235CPG0°C to +70°C24 Wide Plastic DIPMAX231CPD0°C to +70°C14 Plastic DIPMAX235EPG-40°C to +85°C24 Wide Plastic DIPMAX231CWE0°C to +70°C16 Wide SOMAX235EDG-40°C to +85°C24 Ceramic SBMAX231CJD0°C to +70°C14 CERDIPMAX235MDG-55°C to +125°C24 Ceramic SBMAX231C/D0°C to +70°CDice*MAX236CNG0°C to +70°C24 Narrow Plastic DIPMAX231EPD-40°C to +85°C14 Plastic DIPMAX236CWG0°C to +70°C24 Wide SOMAX231EWE-40°C to +85°C16 Wide SOMAX236C/D0°C to +70°CDice*MAX231EJD-40°C to +85°C14 CERDIPMAX236ENG-40°C to +85°C24 Narrow Plastic DIPMAX231MJD-55°C to +125°C14 CERDIPMAX236EWG-40°C to +85°C24 Wide SOMAX232CPE0°C to +70°C16 Plastic DIPMAX236ERG-40°C to +85°C24 Narrow CERDIPMAX232CSE0°C to +70°C16 Narrow SOMAX236MRG-55°C to +125°C24 Narrow CERDIPMAX232CWE0°C to +70°C16 Wide SOMAX237CNG0°C to +70°C24 Narrow Plastic DIPMAX232C/D0°C to +70°CDice*MAX237CWG0°C to +70°C24 Wide SOMAX232EPE-40°C to +85°C16 Plastic DIPMAX237C/D0°C to +70°CDice*MAX232ESE-40°C to +85°C16 Narrow SOMAX237ENG-40°C to +85°C24 Narrow Plastic DIPMAX232EWE-40°C to +85°C16 Wide SOMAX237EWG-40°C to +85°C24 Wide SOMAX232EJE-40°C to +85°C16 CERDIPMAX237ERG-40°C to +85°C24 Narrow CERDIPMAX232MJE-55°C to +125°C16 CERDIPMAX237MRG-55°C to +125°C24 Narrow CERDIPMAX232MLP-55°C to +125°C20 LCCMAX238CNG0°C to +70°C24 Narrow Plastic DIPMAX232ACPE0°C to +70°C16 Plastic DIPMAX238CWG0°C to +70°C24 Wide SOMAX232ACSE0°C to +70°C16 Narrow SOMAX238C/D0°C to +70°CDice*MAX232ACWE0°C to +70°C16 Wide SOMAX238ENG-40°C to +85°C24 Narrow Plastic DIP* Contact factory for dice specifications.______________________________________________________________________________________

MAX220–MAX249元器件交易网www.cecb2b.com+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249___________________________________________Ordering Information (continued)

PARTMAX238EWGMAX238ERGMAX238MRGMAX239CNGMAX239CWGMAX239C/DMAX239ENGMAX239EWGMAX239ERGMAX239MRGMAX240CMHMAX240C/DMAX241CAIMAX241CWIMAX241C/DMAX241EAIMAX241EWIMAX242CAPMAX242CPNMAX242CWNMAX242C/DMAX242EPNMAX242EWNMAX242EJNMAX242MJNTEMP RANGE-40°C to +85°C-40°C to +85°C-55°C to +125°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-55°C to +125°C0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-55°C to +125°CPIN-PACKAGE24 Wide SO24 Narrow CERDIP24 Narrow CERDIP24 Narrow Plastic DIP24 Wide SODice*24 Narrow Plastic DIP24 Wide SO24 Narrow CERDIP24 Narrow CERDIP44 Plastic FPDice*28 SSOP28 Wide SODice*28 SSOP28 Wide SO20 SSOP18 Plastic DIP18 Wide SODice*18 Plastic DIP18 Wide SO18 CERDIP18 CERDIPPARTMAX243CPEMAX243CSEMAX243CWEMAX243C/DMAX243EPEMAX243ESEMAX243EWEMAX243EJEMAX243MJEMAX244CQHMAX244C/DMAX244EQHMAX245CPLMAX245C/DMAX245EPLMAX246CPLMAX246C/DMAX246EPLMAX247CPLMAX247C/DMAX247EPLMAX248CQHMAX248C/DMAX248EQHMAX249CQHMAX249EQHTEMP RANGE0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-55°C to +125°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C-40°C to +85°CPIN-PACKAGE16 Plastic DIP16 Narrow SO16 Wide SODice*16 Plastic DIP16 Narrow SO16 Wide SO16 CERDIP16 CERDIP44 PLCCDice*44 PLCC40 Plastic DIPDice*40 Plastic DIP40 Plastic DIPDice*40 Plastic DIP40 Plastic DIPDice*40 Plastic DIP44 PLCCDice*44 PLCC44 PLCC44 PLCC* Contact factory for dice specifications.

Package Information

For the latest package outline information, go towww.maxim-ic.com/packages.

Revision HistoryPages changed at Rev 15: 2–5, 8, 9, 36

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

is a registered trademark of Maxim Integrated Products, Inc.

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