Max232资料手册

GeneralDescriptionTheMAX220–MAX249familyoflinedrivers/receiversisintendedforallEIA/TIA-232EandV.28/V.24communica-tionsinterfaces,particularlyapplicationswhere±12Visnotavailable.Thesepartsareespeciallyusefulinbattery-poweredsys-tems,sincetheirlow-powershutdownmodereducespowerdissipationtolessthan5µW.TheMAX225,MAX233,MAX235,andMAX245/MAX246/MAX247usenoexternalcomponentsandarerecommendedforappli-cationswhereprintedcircuitboardspaceiscritical.________________________ApplicationsPortableComputersLow-PowerModemsInterfaceTranslationBattery-PoweredRS-232SystemsMultidropRS-232Networks____________________________FeaturesSuperiortoBipolarOperatefromSingle+5VPowerSupply(+5Vand+12V—MAX231/MAX239)Low-PowerReceiveModeinShutdown(MAX223/MAX242)MeetAllEIA/TIA-232EandV.28SpecificationsMultipleDriversandReceivers3-StateDriverandReceiverOutputsOpen-LineDetection(MAX243)OrderingInformationOrderingInformationcontinuedatendofdatasheet.*Contactfactoryfordicespecifications.MAX220–MAX249+5V-Powered,MultichannelRS-232Drivers/Receivers________________________________________________________________MaximIntegratedProducts1SelectionTable19-4323;Rev9;4/00PARTMAX220CPEMAX220CSEMAX220CWE0°Cto+70°C0°Cto+70°C0°Cto+70°CTEMP.RANGEPIN-PACKAGE16PlasticDIP16NarrowSO16WideSOMAX220C/D0°Cto+70°CDice*MAX220EPEMAX220ESEMAX220EWE-40°Cto+85°C-40°Cto+85°C-40°Cto+85°C16PlasticDIP16NarrowSO16WideSOMAX220EJE-40°Cto+85°C16CERDIPMAX220MJE-55°Cto+125°C16CERDIPPowerNo.ofNominalSHDNRxPartSupplyRS-232No.ofCap.Value&Three-ActiveinDataRateNumber(V)Drivers/RxExt.Caps(µF)StateSHDN(kbps)FeaturesMAX220+52/244.7/10No—120Ultra-low-power,industry-standardpinoutMAX222+52/240.1Yes—200Low-powershutdownMAX223(MAX213)+54/541.0(0.1)Yes✔120MAX241andreceiversactiveinshutdownMAX225+55/50—Yes✔120AvailableinSOMAX230(MAX200)+55/041.0(0.1)Yes—1205driverswithshutdownMAX231(MAX201)+5and2/221.0(0.1)No—120Standard+5/+12Vorbatterysupplies;+7.5to+13.2samefunctionsasMAX232MAX232(MAX202)+52/241.0(0.1)No—120(64)IndustrystandardMAX232A+52/240.1No—200Higherslewrate,smallcapsMAX233(MAX203)+52/20—No—120NoexternalcapsMAX233A+52/20—No—200Noexternalcaps,highslewrateMAX234(MAX204)+54/041.0(0.1)No—120Replaces1488MAX235(MAX205)+55/50—Yes—120NoexternalcapsMAX236(MAX206)+54/341.0(0.1)Yes—120Shutdown,threestateMAX237(MAX207)+55/341.0(0.1)No—120ComplementsIBMPCserialportMAX238(MAX208)+54/441.0(0.1)No—120Replaces1488and1489MAX239(MAX209)+5and3/521.0(0.1)No—120Standard+5/+12Vorbatterysupplies;+7.5to+13.2single-packagesolutionforIBMPCserialportMAX240+55/541.0Yes—120DIPorflatpackpackageMAX241(MAX211)+54/541.0(0.1)Yes—120CompleteIBMPCserialportMAX242+52/240.1Yes✔200SeparateshutdownandenableMAX243+52/240.1No—200Open-linedetectionsimplifiescablingMAX244+58/1041.0No—120HighslewrateMAX245+58/100—Yes✔120Highslewrate,int.caps,twoshutdownmodesMAX246+58/100—Yes✔120Highslewrate,int.caps,threeshutdownmodesMAX247+58/90—Yes✔120Highslewrate,int.caps,nineoperatingmodesMAX248+58/841.0Yes✔120Highslewrate,selectivehalf-chipenablesMAX249+56/1041.0Yes✔120AvailableinquadflatpackpackageForfreesamples&thelatestliterature:–MAX249+5V-Powered,MultichannelRS-232Drivers/Receivers2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGS—MAX220/222/232A/233A/242/243ELECTRICALCHARACTERISTICS—MAX220/222/232A/233A/242/243(VCC=+5V±10%,C1–C4=0.1µF‚MAX220,C1=0.047µF,C2–C4=0.33µF,TA=TMINtoTMAX‚unlessotherwisenoted.)Note1:InputvoltagemeasuredwithTOUTinhigh-impedancestate,SHDNorVCC=0V.Note2:FortheMAX220,V+andV-canhaveamaximummagnitudeof7V,buttheirabsolutedifferencecannotexceed13V.Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.SupplyVoltage(VCC)...............................................-0.3Vto+6VInputVoltagesTIN..............................................................-0.3Vto(VCC-0.3V)RIN(ExceptMAX220)........................................................±30VRIN(MAX220).....................................................................±25VTOUT(ExceptMAX220)(Note1).......................................±15VTOUT(MAX220)...............................................................±13.2VOutputVoltagesTOUT...................................................................................±15VROUT.........................................................-0.3Vto(VCC+0.3V)Driver/ReceiverOutputShortCircuitedtoGND.........ContinuousContinuousPowerDissipation(TA=+70°C)16-PinPlasticDIP(derate10.53mW/°Cabove+70°C)....842mW18-PinPlasticDIP(derate11.11mW/°Cabove+70°C)....889mW20-PinPlasticDIP(derate8.00mW/°Cabove+70°C)..440mW16-PinNarrowSO(derate8.70mW/°Cabove+70°C)...696mW16-PinWideSO(derate9.52mW/°Cabove+70°C)......762mW18-