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74F269SPC fiches techniques PDF

Fairchild - 8-Bit Bidirectional Binary Counter

Numéro de référence 74F269SPC
Description 8-Bit Bidirectional Binary Counter
Fabricant Fairchild 
Logo Fairchild 





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74F269SPC fiche technique
April 1988
Revised August 1999
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
s Synchronous counting and loading
s Built-in lookahead carry capability
s Count frequency 100 MHz
s Supply current 113 mA typ
s 300 mil slimline package
Ordering Code:
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-100, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
Function Table
PE CEP CET U/D
LX X X
HH X X
HX H X
HL L H
HL L L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= Transition LOW-to-HIGH
CP Function
 Parallel Load All
Flip-Flops
 Hold
 Hold (TC Held HIGH)
 Count Up
 Count Down
© 1999 Fairchild Semiconductor Corporation DS009510
www.fairchildsemi.com

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