mm74hc221a Fairchild Semiconductor, mm74hc221a Datasheet - Page 2

• Manufacturer Part Number: mm74hc221a
• Description: Dual Non-retriggerable Monostable Multivibrator
• Manufacturer: Fairchild Semiconductor

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Truth Table
H
L
X
Logic Diagram
Transition from LOW-to-HIGH
Transition from HIGH-to-LOW
LOW Level
Irrelevant
HIGH Level
One HIGH Level Pulse
One LOW Level Pulse
Clear
X
X
H
H
L
Inputs
A
X
H
X
L
L
B
X
X
H
H
L
2
Q
L
L
L
Outputs
Q
H
H
H