Loading PDF...
Pages: 28
D-14 (SOIC)RHL(QFN)D-8 (SOIC) 1 FEATURES APPLICATIONS DESCRIPTION IMPROVEDREPLACEMENTFOR: SN65HVD30–SN65HVD39 SLLS665E–SEPTEMBER2005–REVISEDMARCH2008 www.ti.com 3.3VFULL-DUPLEXRS-485DRIVERSANDRECEIVERS Eachdriverandreceiverhasseparateinputand outputpinsforfull-duplexbuscommunication •1/8Unit-LoadOptionAvailable(Upto designs.Theyaredesignedforbalanced 256NodesontheBus) transmissionlinesandinter-operationwithANSI •Bus-PinESDProtectionExceeds15kVHBM TIA/EIA-485A,TIA/EIA-422-B,ITU-Tv.11andISO 8482:1993standard-compliantdevices. •OptionalDriverOutputTransitionTimesfor SignalingRates (1) of1Mbps,5Mbpsand TheSN65HVD30,SN65HVD31,SN65HVD32, 26Mbps SN65HVD36andSN65HVD37arefullyenabledwith noexternalenablingpins. •Low-CurrentStandbyMode:<1μA •Glitch-FreePower-UpandPower-Down TheSN65HVD33,SN65HVD34,SN65HVD35, ProtectionforHot-PluggingApplications SN65HVD38,andSN65HVD39haveactive-high driverenablesandactive-lowreceiverenables.Alow, •5-VTolerantInputs lessthan1μA,standbycurrentcanbeachievedby •BusIdle,Open,andShortCircuitFailsafe disablingboththedriverandreceiver. •DriverCurrentLimitingandThermalShutdown Alldevicesarecharacterizedforambient •MeetsorExceedstheRequirementsofANSI temperaturesfrom–40°Cto85°C.Lowpower TIA/EIA-485-AandRS-422Compatible dissipationallowsoperationattemperaturesupto •5-VDevicesavailable,SN65HVD50-59105°Cor125°C,dependingonpackageoption. (1) LineSignalingRateisthenumberofvoltagetransitionsmade ThepreviewdevicesSN65HVD36andSN65HVD38 persecondexpressedinunitsofbps(bitspersecond). implementreceiverequalizationtechnologyfor improvedjitterperformanceondifferentialbus applicationswithdataratesupto20Mbpsatcable lengthsupto160meters. •UtilityMeters •DTE/DCEInterfaces ThepreviewdevicesSN65HVD37andSN65HVD39 •Industrial,Process,andBuildingAutomation implementreceiverequalizationtechnologyfor improvedjitterperformanceondifferentialbus •Point-of-Sale(POS)TerminalsandNetworks applicationswithdataratesintherangeof1to5 Mbpsatcablelengthsupto1000meters. TheSN65HVD3Xdevicesare3-statedifferentialline driversanddifferential-inputlinereceiversthat operatewith3.3-Vpowersupply. PartNumberReplacewith xxx3491SN65HVD33:BetterESDprotection(15kVvs2kVornotspecified)HigherSignalingRate(26Mbpsvs20Mbps) xxx3490SN65HVD30:FractionalUnitLoad(64Nodesvs32) MAX3491ESN65HVD33: HigherSignalingRate(26Mbpsvs12Mbps)FractionalUnitLoad(64Nodesvs32) MAX3490ESN65HVD30: MAX3076ESN65HVD33: HigherSignalingRate(26Mbpsvs16Mbps)LowerStandbyCurrent(1μAvs10μA) MAX3077ESN65HVD30: MAX3073ESN65HVD34: HigherSignalingRate(5Mbpsvs500kbps)LowerStandbyCurrent(1μAvs10μA) MAX3074ESN65HVD31: MAX3070ESN65HVD35: HigherSignalingRate(1Mbpsvs250kbps)LowerStandbyCurrent(1μAvs10μA) MAX3071ESN65HVD32: 1 Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. UNLESSOTHERWISENOTEDthisdocumentcontains Copyright©2005–2008,TexasInstrumentsIncorporated PRODUCTIONDATAinformationcurrentasofpublicationdate. ProductsconformtospecificationsperthetermsofTexas Instrumentsstandardwarranty.Productionprocessingdoesnot necessarilyincludetestingofallparameters.