© 2000 Fairchild Semiconductor Corporation DS009510 www.fairchildsemi.com
April 1988
Revised September 2000
7
4
F269 8-Bi
t Bidi
rect
iona
l Binar
y

Count
er
74F269
8-Bit Bidirectional Binary Counter
General Description
The 74F269 is a fully synchronous 8-stage up/down
counter featuring 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
rising edge of the clock.
Features
a73 Synchronous counting and loading
a73 Built-in lookahead carry capability
a73 Count frequency 100 MHz
a73 Supply current 113 mA typ
a73 300 mil slimline package

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
Function Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
c17 = Transition LOW-to-HIGH
Order Number Package Number Package Description
74F269SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F269SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
PE CEP CET U/D CP Function
LXXXc17 Parallel Load All
Flip-Flops
HH X Xc17 Hold
HX H Xc17 Hold (TC Held HIGH)
HL L Hc17 Count Up
HLLLc17 Count Down