HCF4027B_02 Datasheet, PDF (2/9 Pages) STMicroelectronics – DUAL J-K MASTER SLAVE FLIP-FLOP

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
V_SS
Negative Supply Voltage
V_DD
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