74VHC123A(2007) View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

MFG CO.

74VHC123A
(Rev.:2007)

Dual Retriggerable Monostable Multivibrator

Fairchild Semiconductor 

Connection Diagram

Logic Symbol

IEEE/IEC

Pin Description

Pin Names

Description

A

Trigger Inputs (Negative Edge)

B

Trigger Inputs (Positive Edge)

CLR

Reset Inputs

Cx

Rx

Q, Q

External Capacitor

External Resistor

Outputs

Truth Table

Inputs

A B CLR

H

H

XL

H

HX

H

L

H

LH

XX

L

Outputs

QQ

LH

LH

LH

Function

Output Enable

Inhibit

Inhibit

Output Enable

Output Enable

Reset

H = HIGH Voltage Level

L = LOW Voltage Level

= HIGH-to-LOW Transition

= LOW-to-HIGH Transition

X = Don't Care

©1993 Fairchild Semiconductor Corporation

74VHC123A Rev. 1.2

2

www.fairchildsemi.com

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