Datasheet > 74FCT2543ATQ8

74FCT2543ATQ8

更新时间： 2023-02-26 14:32:04

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
7页	91K
描述
QSOP-24, Reel

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数据手册

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74FCT2543ATQ8 数据手册

IDT74FCT2543T/AT/CT

FASTCMOSOCTALLATCHEDTRANSCEIVER

INDUSTRIALTEMPERATURERANGE

FAST CMOS

OCTAL LATCHED

TRANSCEIVER

IDT74FCT2543T/AT/CT

DESCRIPTION:

FEATURES:

−

Low input and output leakage ≤1µA (max.)

CMOS power levels

True TTL input and output compatibility

The FCT2543T is a non-inverting octal transceiver built using an

advanceddualmetalCMOStechnology. This device contains twosets of

eightD-typelatcheswithseparateinputandoutputcontrolsforeachset. For

dataflowfromAtoB,forexample,theA-to-BEnable(CEAB)inputmustbe

lowinordertoenterdatafromA0–A7 ortotakedatafromB0–B7,asindicated

in the Function Table. With CEAB low, a low signal on the A-to-B Latch

Enable(LEAB)inputmakes the A-to-Blatches transparent;a subsequent

low-to-hightransitionoftheLEAB signalputs the Alatches inthe storage

modeandtheiroutputsnolongerchangewiththeAinputs. WithCEABand

OEABbothlow,the 3-state Boutputbuffers are active andreflectthe data

presentattheoutputoftheAlatches. ControlofdatafromBtoAis similar,

butuses the CEBA, LEBA andOEBA inputs.

•

VOH = 3.3V (typ.)

VOL = 0.3V (typ.)

−

Meets or exceeds JEDEC standard 18 specifications

Std., A, and C speed grades

Resistor outputs (-15mA IOH, 12mA IOL)

Reduced system switching noise

Available in SOIC and QSOP packages

TheFCT2543Thasbalancedoutputdrivewithcurrentlimitingresistors.

This offers lowgroundbounce,minimalundershootandcontrolledoutput

fall times-reducing the need for external series terminating resistors.

FCT2543T parts are plug-in replacements for FCT543T parts.

FUNCTIONALBLOCKDIAGRAM

DETAIL A

DETAIL A x 7

OEBA

OEAB

CEBA

LEBA

CEAB

LEAB

INDUSTRIAL TEMPERATURE RANGE

AUGUST 2000

1999 Integrated Device Technology, Inc.

DSC-5490/-

12 3 4 5 6 7

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