74HC423BQ

更新时间： 2024-01-07 22:59:31

品牌	Logo	应用领域
恩智浦 - NXP		振荡器逻辑集成电路光电二极管时钟
页数	文件大小	规格书
23页	150K
描述
Dual retriggerable monostable multivibrator with reset

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74HC423BQ 技术参数

生命周期：	Active	包装说明：	TSSOP,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.39	其他特性：	RETRIGGERABLE
系列：	HC/UH	JESD-30 代码：	R-PDSO-G16
长度：	5 mm	负载电容（CL）：	50 pF
逻辑集成电路类型：	MONOSTABLE MULTIVIBRATOR	数据/时钟输入次数：	2
功能数量：	2	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-40 °C
输出极性：	COMPLEMENTARY	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	传播延迟（tpd）：	77 ns
认证状态：	Not Qualified	座面最大高度：	1.1 mm
最大供电电压 (Vsup)：	6 V	最小供电电压 (Vsup)：	2 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	AUTOMOTIVE
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	宽度：	4.4 mm
Base Number Matches：	1

74HC423; 74HCT423

Dual retriggerable monostable multivibrator with reset

Rev. 03 — 24 July 2008

Product data sheet

1. General description

74HC423; 74HCT423 are high-speed Si-gate CMOS devices that are pin compatible with

low power Schottky TTL (LSTTL). They are speciﬁed in compliance with JEDEC

standard no. 7A.

The 74HC423; 74HCT423 dual retriggerable monostable multivibrator with reset has two

methods of output pulse width control.

1. The minimum pulse width is essentially determined by the selection of an external

resistor (R_EXT) and capacitor (C_EXT), see Section 12.1.

2. Once triggered, the basic output pulse width may be extended by retriggering the

gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). By

repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made

as long as desired. When nRD is LOW, it forces the nQ output LOW, the nQ output

HIGH and also inhibits the triggering. Figure 10 and Figure 11 illustrate pulse control

by reset.

The nA and nB inputs’ Schmitt trigger action makes them highly tolerant to slower input

rise and fall times.

The 74HC423; 74HCT423 are identical to the 74HC123; 74HCT123 except that they

cannot be triggered via the reset input.

2. Features

I DC triggered from active HIGH or active LOW inputs

I Retriggerable for very long pulses up to 100% duty factor

I Direct reset terminates output pulse

I Schmitt-trigger action on all inputs except for the reset input

I Complies with JEDEC standard no. 7A

I ESD protection:

N HBM JESD22-A114E exceeds 2000 V

N MM JESD22-A115-A exceeds 200 V

I Speciﬁed from −40 °C to +85 °C and from −40 °C to +125 °C

12 3 4 5 6 7...23

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