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特性
dbq, dgv, dw, 或者 pw pACKAGE
(t运算 视图)
1
2
3
4
5
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7
8
9
10
20
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NC
A1
A2
A3
A4
A5
A6
A7
A8
地
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
nc − 非 内部的 连接
描述/orderinginformation
SN74CB3T3245
8-bitfetbusswitch
2.5-v/3.3-vlow-voltagewith5-v-tolerantlevelshifter
SCDS136–OCTOBER2003–REVISEDMARCH2005
•
V
CC
operatingrangefrom2.3vto3.6v
•
标准'245-typepinout
•
datai/ossupport0-to5-vsignalinglevels
(0.8v,1.2v,1.5v,1.8v,2.5v,3.3v,5v)
•
OutputVoltageTranslationTracksV
CC
•
ControlInputsCanBeDrivenbyTTLor
•
supportsmixed-modesignaloperationonall
5-v/3.3-vcmosoutputs
datai/oports
•
I
止
supportspartial-电源-downmode
–5-vinputdownto3.3-voutputlevelshift
运作
with3.3-vv
CC
•
获得-upperformanceexceeds250ma
–5-v/3.3-vinputdownto2.5-voutputlevel
PerJESD17
shiftwith2.5-vv
CC
•
ESDPerformanceTestedPerJESD22
•
5-v-toleranti/oswithdevicepoweredupor
powereddown–2000-vhuman-bodymodel(a114-b,
classii)
•
bidirectionaldataflowwithnear-零
propagationdelay–1000-vcharged-devicemodel(c101)
•
lowon-stateresistance(r
在
)特性
•
supportsdigitalapplications:水平的
(r
在
=5
Ω
典型值)转变,pciinterface,usbinterface,
memoryinterleaving,busisolation
•
lowinput/outputcapacitanceminimizes
加载(c
io(止)
=5pftyp)
•
idealforlow-powerportableequipment
•
DataandControlInputsProvideUndershoot
ClampDiodes
•
lowpowerconsumption(i
CC
=40
µ
amax)
thesn74cb3t3245isahigh-speedttl-compatiblefetbusswitchwithlowon-stateresistance(r
在
),准许
forminimalpropagationdelay.thedevicefullysupportsmixed-modesignaloperationonalldatai/oportsby
providingvoltagetranslationthattracksV
CC
.thesn74cb3t3245supportssystemsusing5-vttl,3.3-v
lvttl,and2.5-vcmosswitchingstandards,aswellasuser-definedswitchinglevels(seefigure1).
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2003–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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