Datasheet > 74VHC221ASJ_07

74VHC221ASJ_07

更新时间： 2024-11-04 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

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

74VHC221ASJ_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

下载PDF

与74VHC221ASJ_07相关器件

型号	品牌	获取价格	描述	数据表
74VHC221ASJX	FAIRCHILD	获取价格	Monostable Multivibrator
74VHC221ASJX	ONSEMI	获取价格	Monostable Multivibrator
74VHC238	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER
74VHC238_04	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER
74VHC238FT	TOSHIBA	获取价格	CMOS Logic ICs - 74VHC Series
74VHC238M	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER
74VHC238MTR	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER
74VHC238T	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER
74VHC238TTR	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER
74VHC240	FAIRCHILD	获取价格	Octal Buffer/Line Driver with 3-STATE Outputs