HD74HC390 查看數據表（PDF） - Hitachi -> Renesas Electronics

零件编号

产品描述 (功能)

比赛名单

HD74HC390

Dual Decade Counters

Hitachi -> Renesas Electronics 

Block Diagram (1/2)

Clear

A

B

HD74HC390

CK CK

D

R

Q

Q

A

CK CK

D

R

Q

Q

B

CK CK

D

R

Q

Q

C

CK CK

D

R

Q

Q

D

3

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