HCF4027B(2002) Просмотр технического описания (PDF) - STMicroelectronics

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HCF4027B
(Rev.:2002)

DUAL J-K MASTER SLAVE FLIP-FLOP

STMicroelectronics 

HCF4027B

INPUT EQUIVALENT CIRCUIT

FUNCTIONAL DIAGRAM

PIN DESCRIPTION

PIN No

6, 5

10,11

13, 3

12, 4

9, 7

1, 2

15, 14

8

16

SYMBOL NAME AND FUNCTION

J2, K2 Inputs

J1, K1 inputs

CLOCK1,

CLOCK2

Clock Inputs

RESET1,

RESET2

Reset Inputs

SET1, SET2 Set Inputs

Q2, Q2 Outputs

Q1, Q1 Outputs

VSS

Negative Supply Voltage

VDD

Positive Supply Voltage

TRUTH TABLE

PRESENT STATE

Inputs

J

K

S

R

H

X

L

L

X

L

L

L

L

X

L

L

X

H

L

L

X

X

L

L

X

X

H

L

X

X

L

H

X

X

H

H

X : Don"t Care

* : Level Change

2/9

Output

CLOCK*

Q

Q

L

H

H

H

L

L

H

L

X

X

X

H

X

X

L

X

X

H

NEXT STATE

Outputs

Q

L

L

H

H

NO CHANGE

L

H

H

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