MM74HC163N 查看數據表（PDF） - Fairchild Semiconductor

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MM74HC163N

Synchronous Binary Counter with Asynchronous Clear • Synchronous Binary Counter with Synchronous Clear

Fairchild Semiconductor 

Connection Diagram

Logic Diagram

Truth Tables

MM74HC161

CLK

X

X

X

X

↑

↑

CLR

L

H

H

H

H

H

ENP

X

H

L

L

X

H

ENT

X

L

H

L

X

H

Load

X

H

H

H

L

H

Function

Clear

Count & RC disabled

Count disabled

Count & RC disabled

Load

Increment Counter

MM74HC163

CLK

↑

X

X

X

↑

↑

CLR

L

H

H

H

H

H

ENP

X

H

L

L

X

H

ENT

X

L

H

L

X

H

Load

X

H

H

H

L

H

H = HIGH Level

L = LOW Level

X = Don’t Care

↑ = LOW-to-HIGH Transition

Function

Clear

Count & RC disabled

Count disabled

Count & RC disabled

Load

Increment Counter

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