MM74HC162

更新时间： 2024-11-01 05:08:31

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
6页	148K
描述
Synchronous Decade Counter with Asynchronous Clear

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中文翻译

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数据手册

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MM74HC162 数据手册

January 1992

MM74HC160 Synchronous

Decade Counter with Asynchronous Clear

MM54HC161/MM74HC161 Synchronous

Binary Counter with Asynchronous Clear

MM54HC162/MM74HC162 Synchronous

Decade Counter with Synchronous Clear

MM54HC163/MM74HC163 Synchronous

Binary Counter with Synchronous Clear

General Description

T h e M M 5 4 H C 1 6 0 / M M 7 4 H C 1 6 0 , M M 5 4 H C 1 6 1 /

M M 7 4 H C 1 6 1 , M M 5 4 H C 1 6 2 / M M 7 4 H C 1 6 2 , a n d

MM54HC163/MM74HC163 synchronous presettable count-

ers utilize advanced silicon-gate CMOS technology and in-

ternal look-ahead carry logic for use in high speed counting

applications. They offer the high noise immunity and low

power consumption inherent to CMOS with speeds similar

to low power Schottky TTL. The ’HC160 and the ’HC162 are

4 bit decade counters, and the ’HC161 and the ’HC163 are

4 bit binary counters. All flip-flops are clocked simultaneous-

ly on the low to high transition (positive edge) of the CLOCK

input waveform.

The MM54HC160/MM74HC160 and MM54HC161/

MM74HC161 counters are cleared asynchronously. When

the CLEAR is taken low the counter is cleared immediately

regardless of the CLOCK.

Two active high enable inputs (ENP and ENT) and a RIP-

PLE CARRY (RC) output are provided to enable easy cas-

cading of counters. Both ENABLE inputs must be high to

count. The ENT input also enables the RC output. When

enabled, the RC outputs a positive pulse when the counter

overflows. This pulse is approximately equal in duration to

the high level portion of the Q output. The RC output is fed

to successive cascaded stages to facilitate easy implemen-

tation of N-bit counters.

These counters may be preset using the LOAD input. Pre-

setting of all four flip-flops is synchronous to the rising edge

of CLOCK. When LOAD is held low counting is disabled and

the data on the A, B, C, and D inputs is loaded into the

counter on the rising edge of CLOCK. If the load input is

taken high before the positive edge of CLOCK the count

operation will be unaffected.

All inputs are protected from damage due to static dis-

and ground.

charge by diodes to V

Features

Typical operating frequency: 40 MHz

Typical propagation delay; clock to Q: 18 ns

Low quiescent current: 80 mA maximum (74HC Series)

Low input current: 1 mA maximum

All of these counters may be cleared by utilizing the CLEAR

input. The clear function on the MM54HC162/MM74HC162

and MM54HC163/MM74HC163 counters are synchronous

to the clock. That is, the counters are cleared on the posi-

tive edge of CLOCK while the clear input is held low.

Wide power supply range: 2–6V

Connection Diagram

Truth Tables

’HC160/HC161

CLK CLR ENP ENT Load

Function

Clear

Count & RC disabled

Count disabled

Count & RC disabled

Load

Increment Counter

low level

high level, L

don’t care,

low to high transition

’HC162/HC163

CLK CLR ENP ENT Load

Function

Clear

Count & RC disabled

Count disabled

Count & RC disabled

Load

TL/F/5008–1

Order Number MM54HC161/162/163

or MM74HC160/161/162/163

Increment Counter

1995 National Semiconductor Corporation

TL/F/5008

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6

中文翻译

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与MM74HC162相关器件

型号	品牌	获取价格	描述	数据表
MM74HC162J	NSC	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CDIP16, J16A
MM74HC162J/A+	NSC	获取价格	IC,COUNTER,UP,DECADE,HC-CMOS,DIP,16PIN,CERAMIC
MM74HC162M	NSC	获取价格	IC HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, PLASTIC, SO-
MM74HC162M/A+	NSC	获取价格	IC,COUNTER,UP,DECADE,HC-CMOS,SOP,16PIN,PLASTIC
MM74HC162MX	TI	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, PLASTIC, SO-16
MM74HC162N	NSC	获取价格	IC HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDIP16, PLASTIC, DIP
MM74HC162N/A+	NSC	获取价格	IC,COUNTER,UP,DECADE,HC-CMOS,DIP,16PIN,PLASTIC
MM74HC162N/A+	TI	获取价格	IC,COUNTER,UP,DECADE,HC-CMOS,DIP,16PIN,PLASTIC
MM74HC162N/B+	NSC	获取价格	IC,COUNTER,UP,DECADE,HC-CMOS,DIP,16PIN,PLASTIC
MM74HC162N/B+	TI	获取价格	IC,COUNTER,UP,DECADE,HC-CMOS,DIP,16PIN,PLASTIC

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