M74HCT74 STMICROELECTRONICS [STMicroelectronics], M74HCT74 Datasheet - Page 2

• Manufacturer Part Number: M74HCT74
• Description: DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M54/M74HCT74
TRUTH TABLE
X: Don’t Care
PIN DESCRIPTION
LOGIC DIAGRAM
2/11
PIN No
1, 13
2, 12
3, 11
4, 10
5, 9
6, 8
CLR
14
7
H
H
H
H
L
L
1CK, 2CK
1PR, 2PR
SYMBOL
1Q, 2Q
1Q, 2Q
1D, 2D
1CLR,
2CLR
GND
V
CC
PR
H
H
H
H
L
L
INPUTS
Asyncronous Reset -
Direct Input
Data Inputs
Clock Input
(LOW-to-HIGH, Edge-
Triggered)
Asyncronous Set - Direct
Input
True Flip-Flop Outpus
Complement Flip-Flop
Outputs
Ground (0V)
Positive Supply Voltage
NAME AND FUNCTION
D
H
X
X
X
L
X
CK
X
X
X
IEC LOGIC SYMBOL
Q
Q
H
H
H
L
L
n
OUTPUTS
Q
Q
H
H
H
L
L
n
NO CHANGE
FUNCTION
PRESET
CLEAR