M74HC221ATTR

更新时间： 2024-11-20 13:00:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		振荡器
页数	文件大小	规格书
14页	374K
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中文翻译

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数据手册

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M74HC221ATTR 数据手册

M74HC221

DUAL MONOSTABLE MULTIVIBRATOR

■

HIGH SPEED :

= 24 ns (TYP.) at V = 6V

LOW POWER DISSIPATION:

STAND BY STATE :

=4µA (MAX.) at T =25°C

ACTIVE STATE :

=700µA (MAX.) at V = 5V

DIP

SOP

TSSOP

T & R

■

HIGH NOISE IMMUNITY:

= V = 28 % V (MIN.)

NIH

NIL

SYMMETRICAL OUTPUT IMPEDANCE:

|I | = I = 4mA (MIN)

ORDER CODES

PACKAGE

TUBE

BALANCED PROPAGATION DELAYS:

DIP

SOP

M74HC221B1R

M74HC221M1R

PLH

PHL

M74HC221RM13TR

M74HC221TTR

WIDE OPERATING VOLTAGE RANGE:

(OPR) = 2V to 6V

TSSOP

WIDE OUTPUT PULSE WIDTH RANGE :

= 150 ns ~ 60 s OVER AT V = 4.5 V

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 221

WOUT

triggering

the

output

maintains

the

MONOSTABLE STATE for the time period

determined by the external resistor Rx and

capacitor Cx. Taking CLR low breaks this

MONOSTABLE STATE. If the next trigger pulse

occurs during the MONOSTABLE period it makes

the MONOSTABLE period longer.

DESCRIPTION

The M74HC221 is an high speed CMOS

MONOSTABLE MULTIVIBRATOR fabricated with

Limit for values of Cx and Rx :

silicon gate C MOS technology.

Cx : NO LIMIT

There are two trigger inputs, A INPUT (negative

edge) and B INPUT (positive edge).

Rx : V < 3.0V 5KΩ to 1MΩ

0.7

> 3.0V 1KΩ to 1MΩ

Triggering on the B input occurs at a particular

voltage threshold and is not related to rise and fall

time of the applied pulse. The device may also be

trigger by using the CLR input (positive edge)

because of the Schimtt-trigger input; after

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

July 2001

1/14

12 3 4 5 6 7...14

中文翻译

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