M74HC74 Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Lista de partido
M74HC74 Datasheet PDF : 11 Pages
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M54/M74HC74
TRUTH TABLE
INPUTS
CLR
PR
D
CK
L
H
X
X
H
L
X
X
L
L
X
X
H
H
L
H
H
H
H
H
X
X: Don’t Care
PIN DESCRIPTION
PIN No
1, 13
2, 12
3, 11
4, 10
5, 9
6, 8
7
14
SYMBOL
1CLR,
2CLR
1D, 2D
1CK, 2CK
1PR, 2PR
1Q, 2Q
1Q, 2Q
GND
VCC
NAME AND FUNCTION
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
OUTPUTS
Q
Q
L
H
H
L
H
H
L
H
H
L
Qn
Qn
IEC LOGIC SYMBOL
LOGIC DIAGRAM
FUNCTION
CLEAR
PRESET
NO CHANGE
2/11
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