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74F269 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 74F269
功能描述  8-Bit Bidirectional Binary Counter
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

74F269 数据表(HTML) 1 Page - Fairchild Semiconductor

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


类似零件编号 - 74F269_07

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类似说明 - 74F269_07

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