74VHC221A

更新时间： 2024-11-04 22:56:23

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		振荡器
页数	文件大小	规格书
9页	103K
描述
Dual Non-Retriggerable Monostable Multivibrator

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中文翻译

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数据手册

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74VHC221A 数据手册

April 1994

Revised May 1999

74VHC221A

Dual Non-Retriggerable Monostable Multivibrator

Limits for R_xand C_xare:

General Description

The VHC221A is an advanced high speed CMOS

External capacitor, C_x: No limit

External resistors, R_x: V_CC= 2.0V, 5 kΩ min

_CC> 3.0V, 1 kΩ min

Monostable Multivibrator fabricated with silicon gate CMOS

technology. It achieves the high speed operation similar to

equivalent Bipolar Schottky TTL while maintaining the

CMOS low power dissipation. Each multivibrator 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:

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

applied to the input pins without regard to the supply volt-

age. This device can be used to interface 5V to 3V systems

and two supply systems such as battery back up. This cir-

cuit prevents device destruction due to mismatched supply

and input voltages.

Features

■ High Speed: t_PD= 8.1 ns (typ) at V_CC= 5V

■ Low Power Dissipation: I_CC= 4 µA (Max) at T_A= 25°C

■ Active State: I_CC= 600 µA (Max) at T_A= 25°C

■ High Noise Immunity: V_NIH= V_NIL= 28% V_CC(min)

PW = (Rx)(Cx); where PW is in seconds, R is in ohms,

and C is in farads.

■ Power down protection is provided on all inputs

■ Pin and function compatible with 74HC221A

Ordering Code:

Order Number Package Number

Package Description

74VHC221AM

74VHC221ASJ

74VHC221AMTC

74VHC221AN

M16A

M16D

MTC16

N16E

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

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

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

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

Logic Symbol

Connection Diagram

IEEE/IEC

DS011680.prf

www.fairchildsemi.com

12 3 4 5 6 7...9

中文翻译

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与74VHC221A相关器件

型号	品牌	获取价格	描述	数据表
74VHC221A_07	FAIRCHILD	获取价格	Dual Non-Retriggerable Monostable Multivibrator
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

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