HCF4020B(2004) 查看數據表（PDF） - STMicroelectronics

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HCF4020B
(Rev.:2004)

RIPPLE-CARRY BINARY COUNTER/DIVIDERS 14 STAGE

STMicroelectronics 

HCF4020B

IINPUT EQUIVALENT CIRCUIT

FUNCTIONAL DIAGRAM

PIN DESCRIPTION

PIN N°

9, 7, 5, 4, 6,

13, 12, 14,

15, 1, 2, 3

11

10

8

16

SYMBOL NAME AND FUNCTION

Q1, Q4 to

Q14

14 Buffered Outputs

RESET

Φ

VSS

VDD

Reset Input

Input Pulses

Negative Supply Voltage

Positive Supply Voltage

TRUTH TABLE

Φ

X

X : Don’t Care

LOGIC DIAGRAM

RESET

H

L

L

OUTPUT STATE

ALL OUTPUTS = "L"

NO CHANGE

ADVANCE TO NEXT STATE

2/11

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