74AHCT123ABQ

更新时间： 2024-01-19 20:30:51

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
21页	123K
描述
Dual retriggerable monostable multivibrator with reset

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74AHCT123ABQ 技术参数

Source Url Status Check Date：	2013-06-14 00:00:00	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP16,.25	针数：	16
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.12	系列：	AHCT/VHCT/VT
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e4
长度：	5 mm	逻辑集成电路类型：	MONOSTABLE MULTIVIBRATOR
湿度敏感等级：	1	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	封装等效代码：	TSSOP16,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	5 V
传播延迟（tpd）：	17.5 ns	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Prescaler/Multivibrators
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：	YES
技术：	CMOS	温度等级：	AUTOMOTIVE
端子面层：	NICKEL PALLADIUM GOLD	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	4.4 mm
Base Number Matches：	1

74AHCT123ABQ 数据手册

74AHC123A; 74AHCT123A

Dual retriggerable monostable multivibrator with reset

Rev. 02 — 18 January 2008

Product data sheet

1. General description

The 74AHC123A; 74AHCT123A 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; 74AHCT123A are dual retriggerable monostable multivibrators with

output pulse width control by three methods. The basic pulse time is programmed by

selection of an external resistor (R_EXT) and capacitor (C_EXT). 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 basic output pulse width is essentially

determined by the value of the external timing components R_EXTand C_EXT. 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; R_EXT= external resistor in kΩ; C_EXT= external capacitor in pF.

Schmitt-trigger action at all inputs makes the circuit highly tolerant to slower input rise and

fall times. The 74AHC123A; 74AHCT123A is identical to the 74AHC423; 74AHCT423 but

can be triggered via the reset input.

2. Features

■ 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 only: operates with CMOS input levels

■ For 74AHCT123A only: operates with TTL input levels

■ ESD protection:

◆ HBM JESD22-A114E exceeds 2000 V

◆ MM JESD22-A115-A exceeds 200 V

◆ CDM JESD22-C101C exceeds 1000 V

■ Multiple package options

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

12 3 4 5 6 7...21

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74AHCT123ABQ-Q100X	NXP	74AHC(T)123A-Q100 - Dual retriggerable monostable multivibrator with reset QFN 16-Pin	获取价格
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