Datasheet > 74AC16X

74AC16X

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
安森美 - ONSEMI		计数器
页数	文件大小	规格书
15页	192K
描述
Synchronous Presettable Binary Counter

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数据手册

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74AC16X 数据手册

MC74AC161, MC74ACT161,

MC74AC163, MC74ACT163

Synchronous Presettable

Binary Counter

The MC74AC161/74ACT161 and MC74AC163/74ACT163 are

high−speed synchronous modulo−16 binary counters. They are

synchronously presettable for application in programmable dividers

and have two types of Count Enable inputs plus a Terminal Count

output for versatility in forming synchronous multistage counters.

The MC74AC161/74ACT161 has an asynchronous Master Reset

input that overrides all other inputs and forces the outputs LOW. The

MC74AC163/74ACT163 has a Synchronous Reset input that

overrides counting and parallel loading and allows the outputs to be

simultaneously reset on the rising edge of the clock.

http://onsemi.com

DIP−16

N SUFFIX

CASE 648

• Synchronous Counting and Loading

• High−Speed Synchronous Expansion

• Typical Count Rate of 125 MHz

• Outputs Source/Sink 24 mA

• ′ACT161 and ′ACT163 Have TTL Compatible Inputs

w These devices are available in Pb−free package(s). Specifications herein

apply to both standard and Pb−free devices. Please see our website at

www.onsemi.com for specific Pb−free orderable part numbers, or

contact your local ON Semiconductor sales office or representative.

SO−16

D SUFFIX

CASE 751B

EIAJ−16

M SUFFIX

CASE 966

CET PE

10 9

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 12 of this data sheet.

CEP GND

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 11 of this data sheet.

Figure 1. Pinout: 16−Lead Packages Conductors

(Top View)

PIN ASSIGNMENT

CEP

CET

FUNCTION

Count Enable Parallel Input

Count Enable Trickle Input

Clock Pulse Input

(′161) Asynchronous Master Reset Input

(′163) Synchronous Reset Input

Parallel Data Inputs

P −P

Parallel Enable Input

Q −Q

Flip−Flop Outputs

Terminal Count Output

Publication Order Number:

March, 2006 − Rev. 7

MC74AC161/D

12 3 4 5 6 7...15

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