54FCT573

General Description

The ’FCT573 is an octal latch with buffered common Latch

Enable (LE) and buffered common Output Enable (OE) in-

puts.

This device is functionally identical to the ’FCT373 but has

different pinouts.

Features

n Inputs and outputs on opposite sides of package allow

easy interface with microprocessors

n Useful as input or output port for microprocessors

n TTL input and output level compatible

n CMOS power consumption

n Functionally identical to ’FCT373

n TRI-STATE outputs for bus interfacing

n Output sink capability of 32 mA, source capability of

12 mA

n Standard Microcircuit Drawing (SMD) 5962-8863901

Ordering Code

Military

Package

Package Description

Number

54FCT573DMQB

J20A

20-Lead Ceramic Dual-In-Line

54FCT573FMQB

W20A

20-Lead Cerpack

54FCT573LMQB

E20A

20-Lead Ceramic Leadless Chip Carrier, Type C

Connection Diagram

Pin

Names

Description

D

Data Inputs

LE

Latch Enable Input (Active HIGH)

OE

TRI-STATE Output Enable Input

(Active LOW)

O

TRI-STATE Latch Outputs

Pin Assignment

for DIP and Cerpack

DS100951-1

Pin Assignment

for LCC

DS100951-39

August 1998

© 1999 National Semiconductor Corporation

DS100951

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