TLF9488

November 1994

54F74F169

4-Stage Synchronous Bidirectional Counter

General Description

The ’F169 is a fully synchronous 4-stage updown counter

The ’F169 is a modulo-16 binary counter Features a preset

capability for programmable operation carry lookahead for

easy cascading and a UD input to control the direction of

counting All state changes whether in counting or parallel

loading are initiated by the LOW-to-HIGH transition of the

clock

Features

Y

Asynchronous counting and loading

Y

Built-in lookahead carry capability

Y

Presettable for programmable operation

Commercial

Military

Package

Package Description

Number

74F169PC

N16E

16-Lead (0300 Wide) Molded Dual-In-Line

54F169DM (Note 2)

J16A

16-Lead Ceramic Dual-In-Line

74F169SC (Note 1)

M16A

16-Lead (0150 Wide) Molded Small Outline JEDEC

74F169SJ (Note 1)

M16D

16-Lead (0300 Wide) Molded Small Outline EIAJ

Note 1

Devices also available in 13

Note 2

Logic Symbols

TLF9488 – 3

IEEEIEC

’F169

TLF9488 – 9

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

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