74F269_07 Datasheet, PDF (1/9 Pages) Fairchild Semiconductor – 8-Bit Bidirectional Binary Counter

74F269
8-Bit Bidirectional Binary Counter
April 2007
tm
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
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
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
Logic Symbols
Connection Diagram
IEEE/IEC
©1988 Fairchild Semiconductor Corporation
74F269 Rev. 1.0.2
Function Table
PE CEP CET U/D CP
Function
LXXX
Parallel Load All
Flip-Flops
HHXX
Hold
HXHX
Hold (TC Held High)
HL LH
Count Up
HL L L
Count Down
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= Transition LOW-to-HIGH
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