74F269

74F269 8-Bit Bidirectional Binary Counter

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74F269 8-Bit Bidirectional Binary Counter

April 2007

74F269 8-Bit Bidirectional Binary Counter
Features
Synchronous counting and loading Built-in lookahead carry capability Count frequency 100MHz Supply current 113mA typ. 300mil slimline package

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.

Ordering Information
Order Number
74F269SC 74F269SPC

Package Number
M24B N24C

Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering number.

Logic Symbols

Connection Diagram

IEEE/IEC

Function Table
PE
L H H H H

CEP CET U/D
X H X L L X X H L L X X X H L

Function
Parallel Load All Flip-Flops Hold Hold (TC Held High) Count Up Count Down

H HIGH Voltage Level L LOW Voltage Level X Immaterial Transition LOW-to-HIGH
1988 Fairchild Semiconductor Corporation 74F269 Rev. 1.0.2 www.fairchildsemi.com