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74HCT123NB PDF预览

74HCT123NB

更新时间: 2024-11-06 13:04:59
品牌 Logo 应用领域
恩智浦 - NXP 振荡器
页数 文件大小 规格书
24页 148K
描述
HCT SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDIP16

74HCT123NB 技术参数

生命周期:Obsolete包装说明:DIP,
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.21其他特性:RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO
系列:HCTJESD-30 代码:R-PDIP-T16
长度:19.025 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:DIP封装形状:RECTANGULAR
封装形式:IN-LINE传播延迟(tpd):77 ns
认证状态:Not Qualified座面最大高度:4.2 mm
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:NO
技术:CMOS温度等级:AUTOMOTIVE
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL宽度:7.62 mm
Base Number Matches:1

74HCT123NB 数据手册

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74HC123; 74HCT123  
Dual retriggerable monostable multivibrator with reset  
Rev. 05 — 13 July 2009  
Product data sheet  
1. General description  
The 74HC123; 74HCT123 are high-speed Si-gate CMOS devices and are pin compatible  
with Low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC  
standard no. 7A.  
The 74HC123; 74HCT123 are dual retriggerable monostable multivibrators with output  
pulse width control by three methods:  
1. The basic pulse is programmed by selection of an external resistor (REXT) and  
capacitor (CEXT).  
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. Alternatively an output delay can be terminated at any time by a  
LOW-going edge on input nRD, which also inhibits the triggering.  
3. An internal connection from nRD to the input gates makes it possible to trigger the  
circuit by a HIGH-going signal at input nRD as shown in the function table.  
Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower  
input rise and fall times.  
The 74HC123; 74HCT123 are identical to the 74HC423; 74HCT423 but can 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 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  

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