INDUSTRIALTEMPERATURERANGE

IDT74FCT543AT/CT

FASTCMOSOCTALLATCHEDTRANSCEIVER

1

M AY 2 0 1 8

I N DU ST RI AL T EM PERAT U RE RAN GE

IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.

FEATURES:

• A and C grades

• Low input and output leakage ≤

≤

≤

≤

≤

1µA (max.)

• CMOS power levels

• True TTL input and output compatibility:

• Meets or exceeds JEDEC standard 18 specifications

• Power off disable outputs permit "live insertion"

• Available in SOIC and QSOP packages

FU N CT I ON AL BLOCK DI AGRAM

IDT74FCT543AT/CT

FAST CMOS

OCTAL LATCHED

TRANSCEIVER

DESCRIPTION:

The FCT543T is a non-inverting octal transceiver built using an advanced

dual metal CMOS technology. This device contains two sets of eight D-type

latches with separate input and output controls for each set. For data flow

from A to B, for example, the A-to-B Enable (CEAB) input must be low in order

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

(LEAB) input makes the A-to-B latches transparent; a subsequent low-to-

high transition of the LEAB signal puts the A latches in the storage mode and

their outputs no longer change with the A inputs. With CEAB and OEAB both

low, the 3-state B output buffers are active and reflect the data present at the

output of the A latches. Control of data from B to A is similar, but uses the

CEBA, LEBA and OEBA inputs.

Q

OEBA

CEBA

LEBA

OEAB

CEAB

LEAB

DETAIL A x 7

D

LE

Q

D

LE

DETAIL A

©

2018 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.

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