54AC821

General Description

The ’AC/’ACT821 is a 10-bit D flip-flop with TRI-STATE out-

puts arranged in a broadside pinout.

The ’AC/’ACT821 is functionally identical to the AM29821.

Features

n TRI-STATE outputs for bus interfacing

n Noninverting outputs

n Outputs source/sink 24 mA

n ’ACT821 has TTL-compatible inputs

n Standard Microcircuit Drawing (SMD)

— ’ACT821: 5962-88705

— ’AC821: 5962-91606

Logic Symbols

Pin Names

Description

D

Data Inputs

O

Data Outputs

OE

Output Enable Input

CP

Clock Input

Connection Diagrams

DS100355-1

IEEE/IEC

DS100355-2

Pin Assignment

for DIP and Flatpak

DS100355-3

Pin Assignment for LCC

DS100355-4

August 1998

© 1998 National Semiconductor Corporation

DS100355

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