參數(shù)資料
型號: HD74AC195
廠商: Hitachi,Ltd.
英文描述: 4-bit Parallel-Access Shift Register
中文描述: 4位并行存取移位寄存器
文件頁數(shù): 3/11頁
文件大?。?/td> 67K
代理商: HD74AC195
HD74AC195
3
Timing Diagram
CP
MR
J
D
0
D
1
D
2
D
3
Q
0
Q
1
Q
2
Q
3
K
PE
Serial Shift
Serial Shift
Load
Clear
L
H
L
H
Mode Select-Function Table
Inputs
MR
Outputs
Operating Modes
CP
PE
J
K
D
n
X
Q
0
L
Q
1
L
Q
2
L
Q
3
L
Q
3
H
q
2
q
2
q
2
q
2
d
3
Asynchronous Reset
L
X
X
X
X
Shift, Set First Stage
H
H
H
H
X
H
q
0
q
1
q
2
Shift, Reset First Stage
H
H
L
L
X
L
q
0
q
1
q
2
Shift, Toggle First Stage
H
H
H
L
X
q
0
q
0
q
1
q
2
Shift, Retain First Stage
H
H
L
H
X
q
0
q
0
q
1
q
2
Parallel Load
H
L
X
X
d
n
d
0
d
1
d
2
d
3
H :
L
X :
Lower case letters indicate the state of the referenced input (or output) one setup time prior to the LOW-to-
HIGH transition.
:
LOW-to-HIGH clock transition.
HIGH Voltage Level
LOW Voltage Level
Immaterial
:
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