HD74HC4520 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

HD74HC4520

Dual BCD Up Counters / Dual Binary Up Counters

Renesas Electronics 

HD74HC4518, HD74HC4520

Pin Arrangement

Clock A 1

Enable A 2

Q0 A 3

Q1 A 4

Q2 A 5

Q3 A 6

Reset A 7

GND 8

16 VCC

15 Reset B

C

R

Q0

Q3 14 Q3 B

Q1

Q2 13 Q2 B

Q2

Q1 12 Q1 B

Q3

Q0 11 Q0 B

R

C

10 Enable B

9 Clock B

(Top view)

Block Diagram

HD74HC4518

Q0

Q1

Q2

Q3

Reset

Enable

Clock

D

Q

C

Q

R

D

Q

C

Q

R

D

Q

C

Q

R

D

Q

C

Q

R

Rev.2.00, Mar 30, 2006 page 2 of 8

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