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特性
产品
描述
SN65HVD251
SLLS545B–NOVEMBER2002–REVISEDSEPTEMBER2003
CANTRANSCEIVER
•
glitch-freepower-upandpower-downbus
protectionforhot-plugging
•
漏出-inimprovedreplacementforthe
•
DeviceNetVendorID#806
PCA82C250andPCA82C251
•
总线-faultprotectionof
±
36V
•
MeetsorExceedsISO11898
•
CANDataBuses
•
SignalingRates
(1)
upto1Mbps
•
IndustrialAutomation
•
HighInputImpedanceAllowsupto120
–DeviceNet™DataBuses
SN65HVD251NodesonaBus
–smartdistributedsystems(sds™)
•
BusPinESDProtectionExceeds14kVHBM
•
SAEJ1939StandardDataBusInterface
•
UnpoweredNodeDoesNotDisturbtheBus
•
NMEA2000StandardDataBusInterface
•
lowcurrentstandbymode...200µatypical
•
ISO11783StandardDataBusInterface
•
ThermalShutdownProtection
thesn65hvd251isintendedforuseinapplicationsemployingthecontrollerareanetwork(能)串行
communicationphysicallayerinaccordancewiththeiso11898standard.thesn65hvd251provides
differentialtransmitcapabilitytothebusanddifferentialreceivecapabilitytoaCANcontrolleratspeedsupto1
megabitspersecond(mbps).
designedforoperationinharshenvironments,thedevicefeaturescross-线,在-voltageandlossofground
protectionto
±
36v.alsofeaturedareover-temperatureprotectionaswellas-7vto12vcommon-moderange,
andtolerancetotransientsof
±
200v.thetransceiverinterfacesthesingle-endedcancontrollerwiththe
differentialcanbusfoundinindustrial,buildingautomation,andautomotiveapplications.
rs,pin8,providesforthreedifferentmodesofoperation:高-速,slopecontrol,orlow-powermode.这
高-speedmodeofoperationisselectedbyconnectingpin8toground,allowingthetransmitteroutput
transistorstoswitchasfastaspossiblewithnolimitationontheriseandfallslope.theriseandfallslopecanbe
adjustedbyconnectingaresistortogroundatpin8;theslopeisproportionaltothepin'soutputcurrent.斜度
controlwithanexternalresistorvalueof10k
Ω
gives~15v/usslewrate;100k
Ω
gives~2v/usslewrate.
ifahighlogiclevelisappliedtotherspin8,thedeviceentersalow-currentstandbymodeduringwhichthe
driverisswitchedoffandthereceiverremainsactive.thelocalprotocolcontrollerreversesthislow-电流
standbymodewhenitneedstotransmittothebus.
thesn65hvd251maybeusedincan,devicenet™orsds™applicationswiththetexasinstruments'
tms320f241andtms320f243dspswithcan2.0bcontrollers.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
devicenetisatrademarkofallen-bradley.
sdsisatrademarkofhoneywell.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2003,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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