CD40161BM

更新时间： 2024-11-13 22:56:43

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
8页	153K
描述
Decade Counter with Asynchronous Clear

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数据手册

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CD40161BM 数据手册

March 1988

CD40160BM/CD40160BC

Decade Counter with Asynchronous Clear

CD40161BM/CD40161BC

Binary Counter with Asynchronous Clear

CD40162BM/CD40162BC

Decade Counter with Synchronous Clear

CD40163BM/CD40163BC

Binary Counter with Synchronous Clear

General Description

Features

Wide supply voltage range

3.0V to 15V

0.45 V (typ.)

These (synchronous presettable up) counters are monolith-

ic complementary MOS (CMOS) integrated circuits con-

structed with N- and P-channel enhancement mode transis-

tors. They feature an internal carry look-ahead for fast

counting schemes and for cascading packages without ad-

ditional gating.

High noise immunity

Low power TTL

compatibility

fan out of 2 driving 74L

or 1 driving 74LS

Internal look-ahead for fast counting schemes

Carry output for N-bit cascading

Load control line

A low level at the load input disables counting and causes

the outputs to agree with the data input after the next posi-

tive clock edge. The clear function for the CD40162B and

CD40163B is synchronous and a low level at the clear input

sets all four outputs low after the next positive clock edge.

The clear function for the CD40160B and CD40161B is

asynchronous and a low level at the clear input sets all four

outputs low, regardless of the state of the clock.

Synchronously programmable

Equivalent to MC14160B, MC14161B, MC14162B,

MC14163B

Equivalent to MM74C160, MM74C161, MM74C162,

MM74C163

Counting is enabled when both count enable inputs are

high. Input T is fed forward to also enable the carry out. The

carry output is a positive pulse with a duration approximately

equal to the positive portion of Q and can be used to en-

able successive cascaded stages. Logic transitions at the

enable P or T inputs can occur when the clock is high or

low.

Connection Diagram

Dual-In-Line Package

Order Number CD40160B, CD40161B,

CD40162B or CD40163B

TL/F/5986–1

Top View

1995 National Semiconductor Corporation

TL/F/5986

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

12 3 4 5 6 7 8

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