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54LS192LMQB

更新时间： 2024-09-22 22:04:15

品牌	Logo	应用领域
美国国家半导体 - NSC		计数器触发器逻辑集成电路输出元件时钟
页数	文件大小	规格书
8页	155K
描述
54LS192/DM74LS192 Up/Down Decade Counter with Separate Up/Down Clocks

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54LS192LMQB 数据手册

May 1992

54LS192/DM74LS192 Up/Down Decade Counter

with Separate Up/Down Clocks

General Description

The ’LS192 is an up/down BCD decade (8421) counter.

Separate Count Up and Count Down Clocks are used and in

either counting mode the circuits operate synchronously.

The outputs change state synchronous with the LOW-to-

HIGH transitions on the clock inputs.

Separate Terminal Count Up and Terminal Count Down out-

puts are provided which are used as the clocks for a subse-

quent stage without extra logic, thus simplifying multistage

counter designs. Individual preset inputs allow the circuits to

be used as programmable counters. Both the Parallel Load

(PL) and the Master Reset (MR) inputs asynchronously

override the clocks.

Connection Diagram

Logic Symbol

Dual-In-Line Package

TL/F/10178–2

Pin 16

Pin 8

GND

TL/F/10178–1

Order Number 54LS192DMQB, 54LS192FMQB,

54LS192LMQB, DM74LS192M or DM74LS192N

See NS Package Number E20A, J16A,

M16A, N16E or W16A

Mode Select Table

Pin Names

Description

Mode

Count Up Clock Input

(Active Rising Edge)

Reset (Asyn.)

Preset (Asyn.)

No Change

Count Up

Count Down Clock Input

(Active Rising Edge)

Asynchronous Master Reset Input

(Active HIGH)

Count Down

Asynchronous Parallel Load Input

(Active LOW)

HIGH Voltage Level

LOW Voltage Level

Immaterial

P0–P3

Q0–Q3

Parallel Data Inputs

Flip-Flop Outputs

Terminal Count Down (Borrow)

Output (Active LOW)

Terminal Count Up (Carry)

Output (Active LOW)

1995 National Semiconductor Corporation

TL/F/10178

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

12 3 4 5 6 7 8

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与54LS192LMQB相关器件

型号	品牌	获取价格	描述	数据表
54LS192M/B2AJC	MOTOROLA	获取价格	LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, CQCC20, CERAMIC
54LS193	MOTOROLA	获取价格	PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
54LS193	ONSEMI	获取价格	PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
54LS193/B2AJC	MOTOROLA	获取价格	Binary Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL
54LS193/B2C	ETC	获取价格	Synchronous Up/Down Counter
54LS193/BEA	PHILIPS	获取价格	Binary Counter, Synchronous, Bidirectional, TTL, CDIP16
54LS193/BFAJC	MOTOROLA	获取价格	Binary Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL
54LS193DMQB	ETC	获取价格	Synchronous Up/Down Counter
54LS193FMQB	ETC	获取价格	Synchronous Up/Down Counter
54LS193LMQB	ETC	获取价格	Synchronous Up/Down Counter