Datasheet > 逻辑 > 预分频器/多谐振动器> 74AHC123ABQ-Q100

74AHC123ABQ-Q100

更新时间： 2024-11-04 12:32:31

品牌	Logo	应用领域
恩智浦 - NXP		振荡器逻辑集成电路时钟
页数	文件大小	规格书
22页	326K
描述
Dual retriggerable monostable multivibrator with reset

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74AHC123ABQ-Q100 数据手册

74AHC123A-Q100;

74AHCT123A-Q100

Dual retriggerable monostable multivibrator with reset

Rev. 1 — 23 May 2013

Product data sheet

1. General description

The 74AHC123A-Q100; 74AHCT123A-Q100 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 74AHC123A-Q100; 74AHCT123A-Q100 are dual retriggerable monostable

multivibrators with output pulse width control by three methods. The selection of an

external resistor (R_ext) and capacitor (C_ext) program the basic pulse time. The external

resistor and capacitor are normally connected as shown in Figure 11.

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.

An internal connection from nRD to the input gate makes it possible to trigger the circuit by

a positive-going signal at input nRD as shown in Table 3. Figure 8 and Figure 9 illustrate

pulse control by retriggering and early reset. The values of the external timing

components R_extand C_ext, determine the basic output pulse width. When C_ext 10 nF, the

typical output pulse width is defined as: t_W= R_ext C_extwhere t_W= pulse width in ns;

_ext= external resistor in k; C_ext= external capacitor in pF. Schmitt-trigger action at all

inputs makes the circuit highly tolerant to slower input rise and fall times.

This product has been qualified to the Automotive Electronics Council (AEC) standard

Q100 (Grade 1) and is suitable for use in automotive applications.

2. Features and benefits

 Automotive product qualification in accordance with AEC-Q100 (Grade 1)

 Specified from 40 C to +85 C and from 40 C to +125 C

 All inputs have a Schmitt-trigger action

 Inputs accept voltages higher than V_CC

 DC triggered from active HIGH or active LOW inputs

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

 Direct reset terminates output pulse

 For 74AHC123A-Q100 only: operates with CMOS input levels

 For 74AHCT123A-Q100 only: operates with TTL input levels

 ESD protection:

12 3 4 5 6 7...22

中文翻译

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与74AHC123ABQ-Q100相关器件

型号	品牌	获取价格	描述	数据表
74AHC123ABQ-Q100X	NXP	获取价格	74AHC(T)123A-Q100 - Dual retriggerable monostable multivibrator with reset QFN 16-Pin
74AHC123AD	NXP	获取价格	Dual retriggerable monostable multivibrator with reset
74AHC123AD	NEXPERIA	获取价格	Dual retriggerable monostable multivibrator with resetProduction
74AHC123AD,112	NXP	获取价格	74AHC(T)123A - Dual retriggerable monostable multivibrator with reset SOP 16-Pin
74AHC123AD,118	NXP	获取价格	74AHC(T)123A - Dual retriggerable monostable multivibrator with reset SOP 16-Pin
74AHC123AD-Q100	NXP	获取价格	Dual retriggerable monostable multivibrator with reset
74AHC123AD-Q100	NEXPERIA	获取价格	Dual retriggerable monostable multivibrator with resetProduction
74AHC123AD-Q100J	NXP	获取价格	74AHC(T)123A-Q100 - Dual retriggerable monostable multivibrator with reset SOP 16-Pin
74AHC123AD-T	NXP	获取价格	暂无描述
74AHC123APW	NEXPERIA	获取价格	Dual retriggerable monostable multivibrator with resetProduction

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