MM74HC123 查看數據表（PDF） - Fairchild Semiconductor

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MM74HC123

Dual Retriggerable Monostable Multivibrator

Fairchild Semiconductor 

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

XX

X

HX

X

XL

H

L↑

H

↓H

↑

LH

Outputs

Q

Q

L

H

L

H

L

H

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