SN74AVC16827资料
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136
-128-144-1600.40.81.21.62.02.42.8
170153119102856851341700.40.81.21.62.02.42.83.2TA = 25°CProcess = Nominal
IOL - Output Current - mAVCC = 3.3 V
VCC = 2.5 V
VCC = 1.8 V- Output Voltage - V
OLVTA = 25°CProcess = Nominal
IOH - Output Current - mAVCC = 3.3 VVCC = 2.5 V
VCC = 1.8 V- Output Voltage - V
OHV
-80-96-112-32-48-640-16SN74AVC16827
20-BITBUFFER/DRIVER
WITH3-STATEOUTPUTS
SCES176I–DECEMBER1998–REVISEDJUNE2005
•DynamicDriveCapabilityIsEquivalentto
StandardOutputsWithIOHandIOLof±24mA•MemberoftheTexasInstrumentsWidebus™
at2.5-VVCCFamily
•Overvoltage-TolerantInputs/OutputsAllow•EPIC™(Enhanced-PerformanceImplanted
Mixed-Voltage-ModeDataCommunicationsCMOS)SubmicronProcess
•IoffSupportsPartial-Power-DownMode•DOC™(DynamicOutputControl)Circuit
OperationDynamicallyChangesOutputImpedance,
ResultinginNoiseReductionWithoutSpeed•Latch-UpPerformanceExceeds100mAPer
DegradationJESD78,ClassII
•LessThan2-nsMaximumPropagationDelay•PackageOptionsIncludePlasticThinShrink
at2.5-Vand3.3-VVCCSmall-Outline(DGG)andThinVery
Small-Outline(DGV)Packages
ADynamicOutputControl(DOC™)circuitisimplemented,which,duringthetransition,initiallylowerstheoutput
impedancetoeffectivelydrivetheloadand,subsequently,raisestheimpedancetoreducenoise.Figure1shows
typicalVOLvsIOLandVOHvsIOHcurvestoillustratetheoutputimpedanceanddrivecapabilityofthecircuit.At
thebeginningofthesignaltransition,theDOCcircuitprovidesamaximumdynamicdrivethatisequivalenttoa
high-drivestandard-outputdevice.Formoreinformation,refertotheTIapplicationreports,AVCLogicFamily
TechnologyandApplications,literaturenumberSCEA006,andDynamicOutputControl(DOC™)Circuitry
TechnologyandApplications,literaturenumberSCEA009.
Figure1.OutputVoltagevsOutputCurrent
This20-bitnoninvertingbuffer/driverisoperationalat1.2-Vto3.6-VVCC,butisdesignedspecificallyfor1.65-Vto
3.6-VVCCoperation.
TheSN74AVC16827iscomposedoftwo10-bitsectionswithseparateoutput-enablesignals.Foreither10-bit
buffersection,thetwooutput-enable(1OE1and1OE2or2OE1and2OE2)inputsmustbothbelowforthe
correspondingYoutputstobeactive.Ifeitheroutput-enableinputishigh,theoutputsofthat10-bitbuffersection
areinthehigh-impedancestate.
Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoVCCthroughapullup
resistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sinkingcapabilityofthedriver.
Thisdeviceisfullyspecifiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,
preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.
TheSN74AVC16827ischaracterizedforoperationfrom–40°Cto85°C.
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
Widebus,EPIC,DOCaretrademarksofTexasInstruments.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.Copyright©1998–2005,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.元器件交易网www.cecb2b.comwww.ti.com
TERMINALASSIGNMENTS
DGG OR DGV PACKAGE
(TOP VIEW)
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2856
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291OE1
1Y1
1Y2
GND
1Y3
1Y4
VCC1Y5
1Y6
1Y7
GND
1Y8
1Y9
1Y10
2Y1
2Y2
2Y3
GND
2Y4
2Y5
2Y6
VCC2Y7
2Y8
GND
2Y9
2Y10
2OE11OE2
1A1
1A2
GND
1A3
1A4
VCC1A5
1A6
1A7
GND
1A8
1A9
1A10
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC2A7
2A8
GND
2A9
2A10
2OE2SN74AVC16827
20-BITBUFFER/DRIVER
WITH3-STATEOUTPUTS
SCES176I–DECEMBER1998–REVISEDJUNE2005
FUNCTIONTABLE
(EACH10-BITBUFFER/DRIVER)
INPUTSOUTPUT
YOE1OE2A
LLLL
LLHH
HXXZ
XHXZ
2元器件交易网www.cecb2b.comwww.ti.com2OE22OE11OE21OE1
EN2EN1&
551A1541A2521A3511A4491A51
1Y12
1Y23
1Y35
1Y46
1Y5856
28
29&
481A6471A7451A8441A9431A101Y69
1Y710
1Y812
1Y913
1Y101411
422A1412A2402A3382A4372A52Y115
2Y216
2Y317
2Y419
2Y520
362A6342A7332A8312A9302A102Y621
2Y723
2Y824
2Y926
2Y102712
(1) This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
1A11Y121
551OE1
1OE256
2A12Y11528
42292OE1
2OE2
To Nine Other ChannelsTo Nine Other ChannelsSN74AVC16827
20-BITBUFFER/DRIVER
WITH3-STATEOUTPUTS
SCES176I–DECEMBER1998–REVISEDJUNE2005
LOGICSYMBOL(1)
LOGICDIAGRAM(POSITIVELOGIC)
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