74vhc74 STMicroelectronics, 74vhc74 Datasheet - Page 2

• Manufacturer Part Number: 74vhc74
• Description: Dual D-type Flip Flop With Preset And Clear
• Manufacturer: STMicroelectronics

74VHC74
Figure 2: Input Equivalent Circuit
Table 3: Truth Table
X : Don’t Care
Figure 3: Logic Diagram
This logic diagram has not be used to estimate propagation delays
2/14
CLR
H
H
H
H
L
L
PR
H
H
H
H
L
L
INPUTS
D
H
X
X
X
X
L
CK
X
X
X
Table 2: Pin Description
PIN N°
1, 13
2, 12
4, 10
3, 11
Q
5, 9
6, 8
Q
H
H
H
L
L
14
7
n
OUTPUTS
1CLR, 2CLR
1CK, 2CK
1PR, 2PR
SYMBOL
1Q, 2Q
1Q, 2Q
1D, 2D
GND
V
Q
Q
H
H
H
L
L
CC
n
Asynchronous Reset -
Direct Input
Data Inputs
Clock Input
(LOW to HIGH, Edge
Triggered)
Asynchronous Set - Direct
Input
True Flip-Flop Outputs
Complement Flip-Flop
Outputs
Ground (0V)
Positive Supply Voltage
NAME AND FUNCTION
NO CHANGE
FUNCTION
PRESET
CLEAR