Datasheet

TCA4311
SCPS173–DECEMBER2008........................................................................................................................................................................................... www.ti.com
ORDERINGINFORMATION
T
A
PACKAGE
(1)(2)
ORDERABLEPARTNUMBERTOP-SIDEMARKING
TubeTCA4311DPR311
SOIC–D
–40°Cto85°CTapeandreelTCA4311DRPR311
MSOP–DGKTapeandreelTCA4311DGKR3JS
(1)Packagedrawings,thermaldata,andsymbolizationareavailableatwww.ti.com/packaging.
(2)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI
websiteatwww.ti.com.
TERMINALFUNCTIONS
SOIC(D)ORMSOP(DGK)
PACKAGE
DESCRIPTION
PINNUMBERNAME
Active-highchipenablepin.IfENislow,theTCA4311isinalowcurrent(<1µA)mode.Italsodisables
therise-timeaccelerators,disablesthebusprechargecircuitry,drivesREADYlow,isolatesSDAIN
1EN
fromSDAOUTandisolatesSCLINfromSCLOUT.ENshouldbehigh(atV
CC
)fornormaloperation.
ConnectENtoV
CC
ifthisfeatureisnotbeingused.
2SCLOUTSerialclockoutput.ConnectthispintotheSCLbusonthecard.
3SCLIN
Serialclockinput.ConnectthispintotheSCLbusonthebackplane.
4GNDSupplyground
Connectionflag/rise-timeacceleratorcontrol.READYislowwheneitherENisloworthestart-up
5READYsequencedescribedintheoperationsectionhasnotbeencompleted.READYgoeshighwhenENis
highandstart-upiscomplete.Connecta10-kΩresistorfromthispintoV
CC
toprovidethepullup.
6SDAINSerialdatainput.ConnectthispintotheSDAbusonthebackplane.
7SDAOUTSerialdataoutput.ConnectthispintotheSDAbusonthecard.
Supplypower.Maininputpowersupplyfrombackplane.Thisisthesupplyvoltageforthedeviceson
8V
CC
thebackplaneI
2
Cbusses.ConnectpullupresistorsfromSDAINandSCLIN(andalsofromSDAOUT
andSCLOUT)tothispin.Placeabypasscapacitorofatleast0.01µFclosetothispinforbestresults.
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ProductFolderLink(s):TCA4311
Not Recommended For New Designs