IN74HC161A datasheet, PDF - EEWORLD Datasheet

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IN74HC161A: Descriptionpresettable counters; File Size188KB，9 Pages; ManufacturerIK Semicon; Websitehttp://www.iksemi.com/en/index.html

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IN74HC161A Overview

presettable counters

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IN74HC161A

RESETTABLE

OUNTERS

High-Performance Silicon-Gate CMOS

The IN74HC161A is identical in pinout to the LS/ALS161. The

device inputs are compatible with standard CMOS outputs; with

pullup resistors, they are compatible with LS/ALSTTL outputs.

The IN74HC161A is programmable 4-bit synchronous counter

that feature parallel Load, asynchronous Reset, a Carry Output

for cascading and count-enable controls.

The IN74HC161A is binary counter with asynchronous Reset.

Outputs Directly Interface to CMOS, NMOS, and TTL

Operating Voltage Range: 2.0 to 6.0 V

Low Input Current: 1.0

µA

High Noise Immunity Characteristic of CMOS Devices

•

ORDERING INFORMATION

IN74HC161AN Plastic

IN74HC161AD SOIC

= -55° to 125° C for all

packages

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 16 =V

PIN 8 = GND

FUNCTION TABLE

Rese

Load

Inputs

Enable Enable

Clock

Outputs

Q1 Q2

No change

Count up

No change

Function

Reset to “0”

Preset Data

No count

Count

No count

X=don’t care

P0,P1,P2,P3 = logic level of Data inputs

Ripple Carry Out = Enable T

•

IN74HC161A Related Products

	IN74HC161A	IN74HC161AN	IN74HC161AD
Description	presettable counters	presettable counters	presettable counters

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