74vhc123a Fairchild Semiconductor, 74vhc123a Datasheet - Page 2

• Manufacturer Part Number: 74vhc123a
• Description: Dual Retriggerable Monostable Multivibrator
• Manufacturer: Fairchild Semiconductor

©1993 Fairchild Semiconductor Corporation
74VHC123A Rev. 1.2
Connection Diagram
Pin Description
Pin Names
A
B
CLR
C
R
Q, Q
x
x
Trigger Inputs (Negative Edge)
Trigger Inputs (Positive Edge)
Reset Inputs
External Capacitor
External Resistor
Outputs
Description
2
Logic Symbol
Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
A
X
H
X
L
L
= HIGH-to-LOW Transition
= LOW-to-HIGH Transition
Inputs
B
H
X
H
X
L
CLR
H
H
H
H
L
IEEE/IEC
Outputs
Q
L
L
L
Q
H
H
H
Output Enable
Inhibit
Inhibit
Output Enable
Output Enable
Reset
Function
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