Datasheet > 74VHC221A_07

74VHC221A_07

更新时间： 2024-11-24 12:23:31

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		振荡器
页数	文件大小	规格书
12页	464K
描述
Dual Non-Retriggerable Monostable Multivibrator

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中文翻译

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74VHC221A_07 数据手册

May 2007

74VHC221A

Dual Non-Retriggerable Monostable Multivibrator

Features

General Description

■ High Speed: t = 8.1ns (Typ.) at V = 5V

The VHC221A is an advanced high speed CMOS

Monostable Multivibrator fabricated with silicon gate

CMOS technology. It achieves the high speed operation

similar to equivalent Bipolar Schottky TTL while main-

taining the CMOS low power dissipation. Each multi-

vibrator features both a negative, A, and a positive, 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 VHC221A can be

triggered on the positive transition of the clear while A is

held LOW and B is held HIGH. The VHC221A is non-

retriggerable, and therefore cannot be retriggered until

the output pulse times out. The output pulse width is

determined by the equation:

■ Low Power Dissipation: I = 4µA (Max.) at T = 25°C

■ Active State: I = 600µA (Max.) at T = 25°C

■ High Noise Immunity: V

= V

= 28% V (Min.)

NIH

NIL CC

■ Power down protection is provided on all inputs

■ Pin and function compatible with 74HC221A

PW = (Rx)(Cx)

where,

PW is in seconds, R is in ohms, and C is in farads.

Limits for R and C are:

External capacitor, C : No limit

External resistors, R : V = 2.0V, 5kΩ Min.

> 3.0V, 1 kΩ Min

An input protection circuit ensures that 0 to 7V can be

applied to the input pins without regard to the supply

voltage. This device can be used to interface 5V to 3V

systems and two supply systems such as battery back

up. This circuit prevents device destruction due to mis-

matched supply and input voltages.

Ordering Information

Package

Order Number

74VHC221AM

Number

Package Description

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74VHC221ASJ

74VHC221AMTC

M16D

MTC16

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

Wide

Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the

ordering code.

74VHC221A Rev. 1.2

www.fairchildsemi.com

12 3 4 5 6 7...12

中文翻译

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与74VHC221A_07相关器件

型号	品牌	获取价格	描述	数据表
74VHC221AFT	TOSHIBA	获取价格	74VHC Series
74VHC221AM	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
74VHC221AM	ONSEMI	获取价格	Dual Non-Retriggerable Monostable Multivibrator, 960-TUBE
74VHC221AM_07	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
74VHC221AM_NL	FAIRCHILD	获取价格	Monostable Multivibrator, AHC/VHC Series, 2-Func, CMOS, PDSO16, 0.150 INCH, MS-012, SOIC-1
74VHC221AMTC	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
74VHC221AMTC	ONSEMI	获取价格	Dual Non-Retriggerable Monostable Multivibrator, 2350-TUBE
74VHC221AMTC	TI	获取价格	AHC/VHC SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, PLASTIC, TSSOP-16
74VHC221AMTC_07	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
74VHC221AMTCX	FAIRCHILD	获取价格	Monostable Multivibrator

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