參數(shù)資料
型號: M74HC195M1R
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: 8 BIT PIPO SHIFT REGISTER
中文描述: 8位皮普移位寄存器
文件頁數(shù): 2/13頁
文件大?。?/td> 264K
代理商: M74HC195M1R
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
SERIAL
J
X
X
X
L
L
H
H
OUTPUS
CLEAR SHIFT/
LOAD
CLOCK
PARALLEL
B
X
b
X
X
X
X
X
QA
QB
QC
QD
QD
K
X
X
X
H
L
H
L
A
X
a
X
X
X
X
X
C
X
c
X
X
X
X
X
D
X
d
X
X
X
X
X
L
H
H
H
H
H
H
X
L
H
H
H
H
H
X
L
a
L
b
L
c
L
d
L
d
QA0
QA0
L
H
QAn
QB0
QA0
QAn
QAn
QAn
QC0
QBn
QBn
QBn
QBn
QD0
QCn
QCn
QCn
QCn
QD0
QCn
QCn
QCn
QCn
X: Don’t Care:Thelevel of QA, QB, QC,respectively, before the mst recent positive transition of theclock.
PIN DESCRIPTION
PIN No
1
SYMBOL
CLEAR
NAME AND FUNCTION
Reset Input (Active
LOW)
First Stage J Input
(Active LOW)
First Stage K Input
(Active LOW)
Parallel Data Input
2
J
3
K
4, 5, 6, 7
9
A to D
SHIFT/LOAD Control Input
10
CLOCK
Clock Input (LOW to
HIGH Edge-triggered)
Inverted Output From
The Last Stage
Paralle Outputs
Ground (0V)
Positive Supply Voltage
11
QD
15, 14, 13, 12
8
16
QA to QD
GND
V
CC
IEC LOGIC SYMBOL
M54/M74HC195
2/13
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