Datasheet > 74HC123A

74HC123A

更新时间： 2024-09-28 12:52:39

品牌	Logo	应用领域
罗彻斯特 - ROCHESTER		振荡器
页数	文件大小	规格书
4页	443K
描述
Dual Retriggerable Monostable Multivibrator Typical propagation delay: 25 ns

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74HC123A 数据手册

74HC123A

MM74HC123A

Dual Retriggerable Monostable Multivibrator

General Description

Features

The MM74HC123A high speed monostable multivibrators

(one shots) utilize advanced silicon-gate CMOS technol-

ogy. They feature speeds comparable to low power Schot-

tky TTL circuitry while retaining the low power and high

noise immunity characteristic of CMOS circuits.

■ Typical propagation delay: 25 ns

■ Wide power supply range: 2V–6V

■ Low quiescent current: 80 µA maximum (74HC Series)

■ Low input current: 1 µA maximum

■ Fanout of 10 LS-TTL loads

Each multivibrator features both a negative, A, and a posi-

tive, B, transition triggered input, either of which can be

used as an inhibit input. Also included is a clear input that

when taken low resets the one shot. The MM74HC123A

can be triggered on the positive transition of the clear while

A is held LOW and B is held HIGH.

■ Simple pulse width formula T = RC

■ Wide pulse range: 400 ns to ∞ (typ)

■ Part to part variation: 5% (typ)

■ Schmitt Trigger A & B inputs allow rise and fall times to

be as slow as one second

The MM74HC123A is retriggerable. That is it may be trig-

gered repeatedly while their outputs are generating a pulse

and the pulse will be extended.

Pulse width stability over a wide range of temperature and

supply is achieved using linear CMOS techniques. The out-

put pulse equation is simply: PW = (R_EXT) (C_EXT); where

PW is in seconds, R is in ohms, and C is in farads. All

inputs are protected from damage due to static discharge

by diodes to V_CCand ground.

Timing Component

Connection Diagram

Note: Pin 6 and Pin 14 must be hard-wired to GND.

Top View

Rochester Ordering Guide

*Most products can also be offered as RoHS compliant, designated by a –G sufﬁx. Please contact factory for more information.

Rochester Part Number

MM74HC123AN

Fairchild Part Number

MM74HC123AN

Package

PDIP-16

Temperature

-40° to +85°C

MM74HC123AM

SOP-16, Plastic

TSSOP-16, Plastic

SOP-16, Plastic

MM74HC123AMTC

MM74HC123ASJ

MM74HC123AMTC

MM74HC123ASJ

Please contact factory for speciﬁc package availability

and Military/Aerospace speciﬁcations/availability.

Rochester Electronics guarantees performance of its semiconductor products to the original OEM speciﬁcations. “Typical” values are for reference purposes

only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves

the right to make changes without further notice to any speciﬁcation herein.

Speciﬁcation Number 74HC123-I (F) Rev C

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与74HC123A相关器件

型号	品牌	获取价格	描述	数据表
74HC123BQ	NXP	获取价格	Dual retriggerable monostable multivibrator with reset
74HC123BQ	NEXPERIA	获取价格	Dual retriggerable monostable multivibrator with resetProduction
74HC123BQ,115	NXP	获取价格	74HC(T)123 - Dual retriggerable monostable multivibrator with reset QFN 16-Pin
74HC123BQ-Q100	NXP	获取价格	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PQCC16, 2.50 X 3.50 MM, 0.85 MM HEIGHT, PLAST
74HC123BQ-Q100	NEXPERIA	获取价格	Dual retriggerable monostable multivibrator with reset
74HC123D	NXP	获取价格	Dual retriggerable monostable multivibrator with reset
74HC123D	NEXPERIA	获取价格	Dual retriggerable monostable multivibrator with resetProduction
74HC123D	TOSHIBA	获取价格	Not Recommended for New Design
74HC123D,652	NXP	获取价格	74HC(T)123 - Dual retriggerable monostable multivibrator with reset SOP 16-Pin
74HC123D.653	NXP	获取价格	Dual retriggerable monostable multivibrator with reset

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