m74hc74 STMicroelectronics, m74hc74 Datasheet - Page 2

• Manufacturer Part Number: m74hc74
• Description: Dual D Type Flip Flop With Preset And Clear
• Manufacturer: STMicroelectronics

M74HC74
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
X : Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
2/12
CLR
H
H
H
H
L
L
PR
H
H
H
H
L
L
INPUTS
D
X
X
X
H
X
L
CK
X
X
X
PIN DESCRIPTION
Q
PIN No
Q
H
H
H
L
L
2, 12
4, 10
3, 11
1,13
n
5, 9
6, 8
14
7
OUTPUTS
1CLR, 2CLR
1CK, 2CK
1PR, 2PR
SYMBOL
Q
1Q, 2Q
1Q, 2Q
1D, 2D
Q
H
H
H
L
L
GND
n
Vcc
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
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