參數(shù)資料
型號: MM74HC423AJ
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 諧振器
英文描述: HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, CDIP16
封裝: CERAMIC, DIP-16
文件頁數(shù): 1/10頁
文件大小: 204K
代理商: MM74HC423AJ
MM74HC423A
Dual Retriggerable Monostable Multivibrator
General Description
The MM54/74HC423A high speed monostable multivibrators
(one shots) utilize advanced silicon-gate CMOS technology.
They feature speeds comparable to low power Schottky TTL
circuitry while retaining the low power and high noise immu-
nity characteristic of CMOS circuits.
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 ’HC423A cannot be trig-
gered from clear.
The ’HC423A is retriggerable. That is, it may be triggered re-
peatedly while its 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)(CEXT); 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
CC and ground.
Features
n
Typical propagation delay: 40 ns
n
Wide power supply range: 2V–6V
n
Low quiescent current: 80 A maximum (74HC Series)
n
Low input current: 1 A maximum
n
Fanout of 10 LS-TTL loads
n
Simple pulse width formula T = RC
n
Wide pulse range: 400 ns to
(typ)
n
Part to part variation: ±5% (typ)
n
Schmitt Trigger A & B inputs allow infinite rise and fall
times on these inputs
Connection Diagram
Dual-In-Line Package
DS005338-1
Top View
Order Number MM54HC423A or MM74HC423A
Timing Component
DS005338-2
Note: Pin 6 and Pin 14 must be hard-wired to GND.
April 1998
MM74HC423A
Dual
Retriggerable
Monostable
Multivibrator
1998 Fairchild Semiconductor Corporation
DS005338
www.fairchildsemi.com
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相關代理商/技術(shù)參數(shù)
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