1

IDT74FCT16543AT/CT

FASTCMOS16-BITLATCHEDTRANSCEIVER

INDUSTRIALTEMPERATURERANGE

J U LY 2 0 1 7

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

FEATURES:

• 0.5 MICRON CMOS Technology

• High-speed, low-power CMOS replacement for ABT functions

• Low input and output leakage ≤

≤

≤

≤

≤1µA (max.)

• Power off disable outputs permit “live insertion”

• Available in SSOP and TSSOP packages

FU N CT I ON AL BLOCK DI AGRAM

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

©2017 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.

DSC-5444/6

IDT74FCT16543AT/CT

FAST CMOS

16-BIT LATCHED

TRANSCEIVER

DESCRIPTION:

The FCT16543T 16-bit latched transceivers are built using advanced

dual metal CMOS technology. These high-speed, low-power devices are

organized as two independent 8-bit D-type latched transceivers with

separate input and output control to permit independent control of data flow

in either direction. For example, the A-to-B Enable (xCEAB) must be low

in order to enter data from the A port or to output data from the B port. xLEAB

controls the latch function. When xLEAB is low, the latches are transparent.

A subsequent low-to-high transition of xLEAB signal puts the A latches in

the storage mode. xOEAB performs output enable function on the B port.

Data flow from the B port to the A port is similar but requires using xCEBA,

xLEBA, and xOEBA inputs. Flow-through organization of signal pins

simplifies layout. All inputs are designed with hysteresis for improved noise

margin.

The FCT16543T is ideally suited for driving high-capacitance loads

and low-impedance backplanes. The output buffers are designed with

power off disable capability to allow "live insertion" of boards when used

as backplane drivers.

C

D

1

1

LEAB

1

CEAB

1

OEAB

1

LEBA

1

CEBA

1

OEBA

TO SEVEN OTHER CHANNELS

1

2

2

LEAB

2

CEAB

2

OEAB

2

LEBA

2

CEBA

2

OEBA

TO SEVEN OTHER CHANNELS

2

C

D

C

D

C

D

56

54

55

1

3

2

5

29

31

30

28

26

27

15

52

42