Texas Instruments SN74CB3Q3257PWR Bedienungsanleitung

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1B11A

OE

1B2

SW

SW

2B12A

2B2

SW

SW

3B13A

3B2

SW

SW

4B14A

4B2

SW

SW

S

4

7

9

12

1

15

2

3

5

6

11

10

14

13

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AnIMPORTANTNOTICEattheendo fthisdatasheetaddr essesavailability,warranty,chan ges,useinsafety-critica lapplications,

inte llectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

SN74CB3Q3257

SCDS135D–SEPTEMBER2003–REVISEDJULY201 8

SN74CB3Q32574-Bit1-of-2FETMultipl exer/Demult iplexer

2.5-V/3.3-VL ow-V oltageHigh- BandwidthBusSwitch

1

(1)Foradditionalinformationregardingtheperformance

char acteristicsoftheCB3Qfamily,refertotheTIapplication

report, ,CBT-C, CB3T, and CB3Q Signal-Switch Families

SCDA008.

1Features

1 •High-BandwidthDataPath

(upto500MHz)

•5-VTolerantI/OsWithDevicePoweredUpor

PoweredDown

•LowandFlatON-StateResistance(ron)

CharacteristicsOverOperatingRange

(ron = 4Typical)Ω

•Rail-to-RailSwitchingonDataI/OPorts

–0-to5-VSwitchingWith3.3-VVCC

–0-to3.3-VSwitchingWith2.5-VVCC

•BidirectionalDataFlowWithNear-Zero

PropagationDelay

•LowInputandOutputCapacitanceMinimizes

LoadingandSignalDistortion

(Cio(OFF) =3.5pFTypical)

•FastSwitchingFrequency(fOE =20MHz

Maximum)

•DataandControlInputsProvideUndershoot

ClampDiodes

•LowPowerConsumption

(ICC =0.7mATypical)

•VCC OperatingRangeFrom2.3Vto3.6V

•DataI/OsSupport0-to5-VSignalingLevels

(0.8V,1.2V,1.5V,1.8V,2.5V,3.3V,5V)

•ControlInputsCanBeDri venbyTTLor

5-V/3.3-VCMOSOutputs

•Io SupportsPartial-Power-DownModeOperation

•Latch-UpPerformanceExceeds100mAPer

JESD78,ClassII

•ESDPerformanceTestedPerJESD22

–2000-VHumanBodyModel

(A114-B,ClassII)

–1000-VCharged-DeviceModel(C101)

•SupportsBothDigitalandAnalogApplications:

USBInterface,DierentialSignalInterface,

BusIsolation,Low-DistortionSignalGating(1)

2Applications

•IPPhones:WiredandWireless

•OpticalModules

•OpticalNetworking:VideoOverFiberandEPON

•PrivateBranchExchange(PBX)

•WiMAXandWirelessInfrastruct ureEquipment

3Description

TheSN74CB3Q3257deviceisahigh-bandwidthFET

busswitc hutilizi ngachargepumptoelevatethegate

voltageofthepasstransistor,providingalowandat

ON-stateresi stance(ron).

DeviceInformation(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

SN74CB3Q3257DGVTVSOP(16 )3.60mm×4.40mm

SN74CB3Q3257DBQSSOP(16)4.90mm×3.90mm

SN74CB3Q3257PWTSSOP(16 )5.00mm×4.40mm

SN74CB3Q3257RGYVQFN(16)4.00mm×3.50mm

(1)Forallavaila blepackages,seetheorderableaddendumat

theendofthedatasheet.

LogicDiagram(PositiveLogic)

Produktspezifikationen