November 1994
54F/74F169
4-Stage Synchronous Bidirectional Counter
General Description
Features
Y
Asynchronous counting and loading
The ’F169 is a fully synchronous 4-stage up/down counter.
The ’F169 is a modulo-16 binary counter. Features 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.
Y
Built-in lookahead carry capability
Y
Presettable for programmable operation
Package
Commercial
74F169PC
Military
Package Description
Number
N16E
16-Lead (0.300 Wide) Molded Dual-In-Line
×
54F169DM (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F169SC (Note 1)
74F169SJ (Note 1)
M16A
M16D
16-Lead (0.150 Wide) Molded Small Outline, JEDEC
×
16-Lead (0.300 Wide) Molded Small Outline, EIAJ
×
e
Note 1: Devices also available in 13 reel. Use suffix
SCX and SJX.
×
Note 2: Military grade device with environmental and burn-in processing. Use suffix
e
DMQB.
Logic Symbols
IEEE/IEC
’F169
TL/F/9488–3
TL/F/9488–9
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
TL/F/9488
RRD-B30M75/Printed in U. S. A.