74LVC74APW Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
74LVC74APW Datasheet PDF : 10 Pages
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Philips Semiconductors
Dual D-type flip-flop with set and reset;
positive-edge trigger
Product Specification
74LVC74A
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
1, 13
1RD, 2RD
2, 12
1D, 2D
3, 11
1CP, 2CP
4, 10
5, 9
6, 8
7
14
1SD, 2SD
1Q, 2Q
1Q, 2Q
GND
VCC
NAME AND FUNCTION
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
LOGIC SYMBOL
4 10
1SD 2SD
2 1D D SD Q 1Q 5
12 2D
2Q 9
3 1CP CP FF
11 2CP
Q 1Q 5
2Q 9
RD
1RD 2RD
1 13
SV00492
FUNCTION TABLE
INPUTS
SD
RD
CP
D
L
H
X
X
H
L
X
X
L
L
X
X
OUTPUTS
Q
Q
H
L
L
H
H
H
INPUTS
SD
RD
CP
H
H
°
OUTPUTS
D
Qn+1
Qn+1
L
L
H
H
H
°
H
H
L
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don“t care
° = LOW-to-HIGH CP transition
Qn+1 = state after the next LOW-to-HIGH CP transition
FUNCTIONAL DIAGRAM
4 1SD
2 1D
SD
DQ
1Q
5
3 1CP CP FF1
Q 1Q 6
RD
1 1RD
10 2SD
12 2D
SD 2Q
DQ
9
11 2CP CP FF2
Q 2Q 8
RD
13 2RD
SV00494
1998 Jun 17
3
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