DM5490

更新时间： 2024-11-24 22:54:35

品牌	Logo	应用领域
美国国家半导体 - NSC		计数器
页数	文件大小	规格书
10页	136K
描述
Decade and Binary Counters

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数据手册

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DM5490 数据手册

July 1992

DM5490/DM7490A, DM7493A

Decade and Binary Counters

General Description

Each of these monolithic counters contains four master-

slave flip-flops and additional gating to provide a divide-by-

two counter and a three-stage binary counter for which the

count cycle length is divide-by-five for the 90A and divide-

by-eight for the 93A.

described in the appropriate truth table. A symmetrical di-

vide-by-ten count can be obtained from the 90A counters by

connecting the Q output to the A input and applying the

input count to the B input which gives a divide-by-ten square

wave at output Q .

All of these counters have a gated zero reset and the 90A

also has gated set-to-nine inputs for use in BCD nine’s com-

plement applications.

Features

Typical power dissipation

145 mW

130 mW

Ð 90A

Ð 93A

To use their maximum count length (decade or four-bit bina-

ry), the B input is connected to the Q output. The input

count pulses are applied to input A and the outputs are as

Count frequency 42 MHz

Connection Diagrams

Dual-In-Line Package

TL/F/6533–1

Order Number DM5490J, DM5490W or DM7490AN

See NS Package Number J14A, N14A or W14B

Dual-In-Line Package

TL/F/6533–2

Order Number DM7493AN

See NS Package Number N14A

1995 National Semiconductor Corporation

TL/F/6533

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6 7...10

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与DM5490相关器件

型号	品牌	获取价格	描述	数据表
DM5490A	NSC	获取价格	Decade, and Binary Counters
DM5490AJ	NSC	获取价格	Decade, and Binary Counters
DM5490AJ/883	ETC	获取价格	Asynchronous Up Counter
DM5490AJ/883B	NSC	获取价格	IC,COUNTER,UP,DECADE,STD-TTL,DIP,14PIN,CERAMIC
DM5490AJ/883C	NSC	获取价格	IC,COUNTER,UP,DECADE,STD-TTL,DIP,14PIN,CERAMIC
DM5490AN	NSC	获取价格	Decade, and Binary Counters
DM5490AW	NSC	获取价格	Decade, and Binary Counters
DM5490AW/883	ROCHESTER	获取价格	TTL/H/L SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, CDFP14, W14B
DM5490AW/883	TI	获取价格	TTL/H/L SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, CDFP14, W14B
DM5490AW/883B	NSC	获取价格	IC,COUNTER,UP,DECADE,STD-TTL,FP,14PIN,CERAMIC