74221 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74221 Datasheet PDF : 9 Pages
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Truth Table
H = HIGH Level
L = LOW Level
↑= Transition from LOW-to-HIGH
↓= Transition from HIGH-to-LOW
= One HIGH Level Pulse
= One LOW Level Pulse
X = Irrelevant
Logic Diagram
Inputs
Clear
A
B
L
X
X
X
H
X
X
X
L
H
L
↑
H
↓
H
↑
L
H
Outputs
Q
Q
L
H
L
H
L
H
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