Datasheet > MM74HC221A_04

MM74HC221A_04

更新时间： 2024-09-23 05:08:31

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		振荡器
页数	文件大小	规格书
9页	120K
描述
Dual Non-Retriggerable Monostable Multivibrator

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MM74HC221A_04 数据手册

September 1983

Revised January 2004

MM74HC221A

Dual Non-Retriggerable Monostable Multivibrator

General Description

Features

The MM74HC221A 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: 40 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 MM74HC221A

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 enable infinite signal input

rise or fall times

The MM74HC221A is a non-retriggerable, and therefore

cannot be retriggered until the output pulse times out.

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.

Ordering Code:

Order Number Package Number

Package Description

MM74HC221AM

(Note 1)

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

MM74HC221ASJ

MM74HC221AN

M16D

N16E

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

Note 1: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagrams

Timing Component

Top View

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

DS005325

www.fairchildsemi.com

12 3 4 5 6 7...9

中文翻译

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与MM74HC221A_04相关器件

型号	品牌	获取价格	描述	数据表
MM74HC221ACW	ROCHESTER	获取价格	Monostable Multivibrator, HC/UH Series, 2-Func, CMOS, WAFER-16
MM74HC221AJ	NSC	获取价格	IC HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, CDIP16, CERAMIC, DIP-16, Prescaler/Multivi
MM74HC221AJN	TI	获取价格	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDIP16, PLASTIC, DIP-16
MM74HC221AM	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
MM74HC221AM/A+	TI	获取价格	IC,MONOSTABLE MULTIVIBRATOR,HC-CMOS,SOP,16PIN,PLASTIC
MM74HC221AMTC	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
MM74HC221AMTCX	FAIRCHILD	获取价格	Monostable Multivibrator, HC/UH Series, 2-Func, CMOS, PDSO16, 4.40 MM, MO-153, TSSOP-16
MM74HC221AMTCX	ROCHESTER	获取价格	Monostable Multivibrator, HC/UH Series, 2-Func, CMOS, PDSO16, 4.40 MM, MO-153, TSSOP-16
MM74HC221AMX	TI	获取价格	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, PLASTIC, SO-16
MM74HC221AMX	FAIRCHILD	获取价格	Monostable Multivibrator, HC/UH Series, 2-Func, CMOS, PDSO16, 0.150 INCH, MS-012, SOIC-16

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