Rev.2.00 Mar 30, 2006 page 1 of 8

HD74HC423A

Dual Retriggerable Monostable Multivibrators

REJ03D0626-0200

(Previous ADE-205-505)

Rev.2.00

Mar 30, 2006

Description

This multivibrator features output-pulse-duration control by two methods. The basic pulse duration is programmed by

selection of external resistance and capacitance values. Once triggered, the basic pulse duration may be extended by

retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear.

The B input is a Schmitt trigger enabling jitter-free triggering from input signals with slow transition rates.

Features

• High Speed Operation

• High Output Current: Fanout of 10 LSTTL Loads

• Wide Operating Voltage: V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74HC423AP

DILP-16 pin

PRDP0016AE-B

(DP-16FV)

P

—

HD74HC423AFPEL

SOP-16 pin (JEITA)

PRSP0016DH-B

(FP-16DAV)

FP

EL (2,000 pcs/reel)

Note:

Please consult the sales office for the above package availability.

Function Table

Inputs

Outputs

Clear

A

B

Q

Q

L

X

X

L

H

X

H

X

L

H

X

X

L

L

H

H

L

H

H

Note:

1. H; High level, L; Low level, X; Irrelevant