© 2000 Fairchild Semiconductor Corporation

DS009488

www.fairchildsemi.com

April 1988

Revised September 2000

74F169

4-Stage Synchronous Bidirectional Counter

General Description

The 74F169 is a fully synchronous 4-stage up/down

counter. The 74F169 is a modulo-16 binary counter. Fea-

tures a preset capability for programmable operation, carry

lookahead for easy cascading and a U/D 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

s Asynchronous counting and loading

s Built-in lookahead carry capability

s Presettable for programmable operation

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbols

IEEE/IEC

Connection Diagram

Order Number

Package Number

Package Description

74F169SC

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

74F169SJ

M16D

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74F169PC

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide