74F269SDCQR

更新时间： 2024-02-17 19:30:52

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		计数器
页数	文件大小	规格书
6页	71K
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数据手册

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74F269SDCQR 数据手册

April 1988

Revised September 2000

74F269

8-Bit Bidirectional Binary Counter

General Description

Features

■ Synchronous counting and loading

The 74F269 is

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.

■ Built-in lookahead carry capability

■ Count frequency 100 MHz

■ Supply current 113 mA typ

■ 300 mil slimline package

Ordering Code:

Order Number Package Number

Package Description

74F269SC

M24B

N24C

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

74F269SPC

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 CP

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

DS009510

www.fairchildsemi.com

12 3 4 5 6

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