sn65hvd235.pdf

sn65hvd235.pdf

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1FEATURESDESCRIPTIONAPPLICATIONS8145RSDRLBK76CANHCANL814576CANHCANLRSDENR8145RSDRAB76CANHCANLSN65HVD233FUNCTIONALBLOCKDIAGRAMSN65HVD234FUNCTIONALBLOCKDIAGRAMSN65HVD235FUNCTIONALBLOCKDIAGRAMSN65HVD233SN65HVD234SN65HVD.SLLS557FNOVEMBER2002REVISEDAUGUST20083.3-VCANTRANSCEIVERS2Bus-PinFaultProtectionExceeds36VBus-PinESDProtectionExceeds16-kVHBMTheSN65HVD233,SN65HVD234,andSN65HVD235areusedinapplicationsemployingthecontrollerareaGIFT/ICTCompliant（SN65HVD234）network（CAN）serialcommunicationphysicallayerinCompatibleWithISO11898accordancewiththeISO11898standard.AsaCANSignalingRates

（1）upto1Mbpstransceiver,eachprovidestransmitandreceivecapabilitybetweenthedifferentialCANbusandaExtended7-Vto12-VCommon-ModeRangeCANcontroller,withsignalingratesupto1Mbps.High-InputImpedanceAllowsfor120NodesDesignedforoperationinespeciallyharshLVTTLI/OsAre5-VTolerantenvironments,thedevicesfeaturecross-wire,AdjustableDriverTransitionTimesforovervoltageandlossofgroundprotectionto36V,ImprovedSignalQualitywithovertemperatureprotectionandcommon-modeUnpoweredNodeDoesNotDisturbtheBustransientprotectionof100V.Thesedevicesoperateovera7-Vto12-Vcommon-moderangewithaLow-CurrentStandbyMode.200-ATypicalmaximumof60nodesonabus.Low-CurrentSleepMode.50-nATypical（SN65HVD234）ThermalShutdownProtectionPower-Up/DownGlitch-FreeBusInputsandOutputsHighInputImpedanceWithLowVCCMonolithicOutputDuringPowerCyclingLoopbackforDiagnosticFunctionsAvailable（SN65HVD233）LoopbackforAutobaudFunctionAvailable（SN65HVD235）DeviceNetVendorID#806

（1）Thesignalingrateofalineisthenumberofvoltagetransitionsthataremadepersecondexpressedintheunitsbps（bitspersecond）.CANDataBusIndustrialAutomationDeviceNetDataBusesSmartDistributedSystems（SDS）SAEJ1939StandardDataBusInterfaceNMEA2000StandardDataBusInterfaceISO11783StandardDataBusInterface1Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.2DeviceNetisatrademarkofOpenDeviceNetVendorAssociation.PRODUCTIONDATAinformationiscurrentasofpublicationdate.Copyright20022008,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.DESCRIPTION（CONTINUED）SN65HVD233SN65HVD234SN65HVD235SLLS557FNOVEMBER2002REVISEDAUGUSTThesedeviceshavelimitedbuilt-inESDprotection.TheleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoamduringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.Ifthecommon-moderangeisrestrictedtotheISO-11898Standardrangeof2Vto7V,upto120nodesmaybeconnectedonabus.Thesetransceiversinterfacethesingle-endedCANcontrollerwiththedifferentialCANbusfoundinindustrial,buildingautomation,andautomotiveapplications.TheRS,pin8oftheSN65HVD233,SN65HVD234,andSN65HVD235providesforthreemodesofoperation:

high-speed,slopecontrol,orlow-powerstandbymode.Thehigh-speedmodeofoperationisselectedbyconnectingpin8directlytoground,allowingthedriveroutputtransistorstoswitchonandoffasfastaspossiblewithnolimitationontheriseandfallslope.Theriseandfallslopecanbeadjustedbyconnectingaresistortogroundatpin8,sincetheslopeisproportionaltothepinsoutputcurrent.Slopecontrolisimplementedwitharesistorvalueof10ktoachieveaslewrateof915V/sandavalueof100ktoachieve92.0V/sslewrate.Formoreinformationaboutslopecontrol,refertotheapplicationinformationsection.TheSN65HVD233,SN65HVD234,andSN65HVD235enteralow-currentstandbymodeduringwhichthedriverisswitchedoffandthereceiverremainsactiveifahighlogiclevelisappliedtopin8.Thelocalprotocolcontrollerreversesthislow-currentstandbymodewhenitneedstotransmittothebus.AlogichighontheloopbackLBKpin5oftheSN65HVD233placesthebusoutputandbusinputinahigh-impedancestate.Theremainingcircuitremainsactiveandavailablefordrivertoreceiverloopback,self-diagnosticnodefunctionswithoutdisturbingthebus.TheSN65HVD234entersanultralow-currentsleepmodeinwhichboththedriverandreceivercircuitsaredeactivatedifalowlogiclevelisappliedtoENpin5.Thedeviceremainsinthissleepmodeuntilthecircuitisreactivatedbyapplyingahighlogicleveltopin5.TheABpin5oftheSN65HVD235implementsabuslisten-onlyloopbackfeaturewhichallowsthelocalnodecontrollertosynchronizeitsbaudratewiththatoftheCANbus.Inautobaudmode,thedriversbusoutputisplacedinahigh-impedancestatewhilethereceiversbusinputremainsactive.Formoreinformationontheautobaudmode,refertothe