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54ABT573 Octal D-Type Latch with TRI-STATE Outputs

July 1998

54ABT573

Octal D-Type Latch with TRI-STATE

廬

Outputs

General Description

The 鈥橝BT573 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 鈥橝BT373 but has

different pinouts.

n

Functionally identical to 鈥橝BT373

n

TRI-STATE outputs for bus interfacing

n

Output sink capability of 48 mA, source capability of

24 mA

n

Output switching specified for both 50 pF and 250 pF

loads

n

Guaranteed latchup protection

n

High impedance glitch-free bus loading during entire

power up and power down

n

Nondestructive hot insertion capability

n

Standard Microcircuit Drawing (SMD) 5962-9321901

Features

n

Inputs and outputs on opposite sides of package allow

easy interface with microprocessors

n

Useful as input or output port for microprocessors

Ordering Code

Military

54ABT573J-QML

54ABT573W-QML

54ABT573E-QML

Package

Number

J20A

W20A

E20A

20-Lead Ceramic Dual-In-Line

20-Lead Cerpack

20-Lead Ceramic Leadless Chip Carrier, Type C

Package Description

Connection Diagram

Pin Assignment

for DIP and Cerpack

Pin Assignment

for LCC

DS100219-39

DS100219-1

Pin

Names

D

0

鈥揇

7

LE

OE

O

0

鈥揙

7

Data Inputs

Description

Latch Enable Input (Active HIGH)

TRI-STATE Output Enable Input

(Active LOW)

TRI-STATE Latch Outputs

TRI-STATE

廬

is a registered trademark of National Semiconductor Corporation.

漏 1998 National Semiconductor Corporation

DS100219

www.national.com

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