© 1999 Fairchild Semiconductor Corporation DS009488 www.fairchildsemi.com
April 1988
Revised July 1999
7
4F169 4-St
age
Sync
hronous Bidi
rect
i
onal Counte
r
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
a73 Asynchronous counting and loading
a73 Built-in lookahead carry capability
a73 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