74LVC74A PHILIPS [NXP Semiconductors], 74LVC74A Datasheet - Page 3

• Manufacturer Part Number: 74LVC74A
• Description: Dual D-type flip-flop with set and reset; positive-edge trigger
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
PIN DESCRIPTION
LOGIC SYMBOL
1998 Jun 17
NUMBER
1, 13
2, 12
3, 11
4, 10
5, 9
6, 8
7
14
Dual D-type flip-flop with set and reset;
positive-edge trigger
PIN
SYMBOL
1R
1CP, 2CP
1S
1Q, 2Q
1Q, 2Q
1D, 2D
GND
D
D
V
, 2R
, 2S
CC
12
D
D
11
3
2
1CP
2CP
1D
2D
Asynchronous reset-direct input
(active LOW)
Data inputs
Clock input (LOW-to-HIGH, edge
triggered)
Asynchronous set-direct input (active
LOW)
True flip-flop outputs
Complement flip-flop outputs
Ground (0 V)
Positive supply voltage
D
CP
1R
1S
D
D
4 10
1 13
R
S
D
D
2R
2S
NAME AND FUNCTION
FF
Q
Q
D
D
SV00492
1Q
2Q
1Q
2Q
5
9
5
9
3
FUNCTION TABLE
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don“t care
° = LOW-to-HIGH CP transition
Q
FUNCTIONAL DIAGRAM
n+1
S
S
H
H
H
L
L
= state after the next LOW-to-HIGH CP transition
D
D
R
R
H
H
H
L
L
D
D
INPUTS
INPUTS
10
12
11
13 2R
4
2
3
1 1R D
1S D
1D
1CP
2S D
2D
2CP
CP
CP
X
X
X
°
°
D
D
CP FF1
D
CP FF2
R D
S D
S D
R D
Q
Q
Q
Q
SV00494
1Q
1Q
2Q
2Q
D
D
H
X
X
X
L
5
6
9
8
74LVC74A
Product Specification
Q
Q
H
H
H
L
n+1
L
OUTPUTS
OUTPUTS
Q
Q
H
H
n+1
H
L
L