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Número de pieza
componentes Descripción
74HC164 Ver la hoja de datos (PDF) - Diodes Incorporated.
Número de pieza
componentes Descripción
Fabricante
74HC164
8-BIT PARALLEL-OUT SERIAL SHIFT REGISTERS
Diodes Incorporated.
74HC164 Datasheet PDF : 10 Pages
1
2
3
4
5
6
7
8
9
10
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
DSA
DSB
Q0
Q1
Q2
Q3
GND
CP
MR
Q4
Q5
Q6
Q7
V
CC
74HC164
400
Function
Serial Data Input
Serial Data Input
Data Output
Data Output
Data Output
Data Output
Ground
Clock Pulse
–
Positive Edge Triggered
Master Reset - Asynchronous
Data Output
Data Output
Data Output
Data Output
Supply Voltage
Function Table
(Note 4)
Mode
MR
Input
CP
DSA
DSB
Output
Q0
Q1-Q7
Reset
L
X
X
X
L
L
H
↑
L
X
L
Qn←Qn
-1 (n= 1 to7)
Shift
H
↑
X
L
L
Qn←Qn
-1 (n= 1 to7)
H
↑
H
H
H
Qn←Qn
-1 (n= 1 to7)
Note:
4. Signals asserted on DSA and DSB must be in place longer than Tsu (set-up time) before CP occurs and remain in place Thold (hold time) after CP.
Logic Diagram
DSA
1
DSB
2
CP
8
MR
9
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
C
C
C
C
C
C
C
C
R
R
R
R
R
R
R
R
3
4
5
6
10
11
12
13
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
74HC164
Document number: DS36279 Rev. 2- 2
2 of 10
www.diodes.com
March 2015
© Diodes Incorporated
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