參數(shù)資料
型號: M74HC194C1R
廠商: 意法半導(dǎo)體
英文描述: 4 BIT PIPO SHIFT REGISTER
中文描述: 4位皮普移位寄存器
文件頁數(shù): 2/12頁
文件大?。?/td> 271K
代理商: M74HC194C1R
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
OUTPUS
CLEAR
MODE
S1
X
X
H
L
L
H
H
L
CLOCK
SERIAL
LEFT
X
X
X
X
X
H
L
X
PARALLEL
B
X
X
b
X
X
X
X
X
QA
QB
QC
QD
S0
X
X
H
H
H
L
L
L
RIGHT
X
X
X
H
L
X
X
X
A
X
X
a
X
X
X
X
X
C
X
X
c
X
X
X
X
X
D
X
X
d
X
X
X
X
X
L
H
H
H
H
H
H
H
X
L
L
L
L
QA0
a
H
L
QBn
QBn
QA0
QB0
b
QAn
QAn
QCn
QCn
QB0
QC0
c
QBn
QBn
QDn
QDn
QC0
QD0
d
QCn
QCn
H
L
QD0
X
X: Don’t Care
a ~d
QA0 ~ QD0
QAn ~ QDn
: Don’t Care
: The level of steady stateinput voltage at inputA ~ D respactvely
: No change
: The level of QA, QB, QC, respectively, before themst recentpositive transition oftheclock.
PIN DESCRIPTION
PIN No
1
SYMBOL
CLEAR
NAME AND FUNCTION
Asynchronous Reset
Input (Active LOW)
Serial Data Input (Shift
Right)
Parallel Data Input
Serial Data Input (Shift
Left)
Mode Control Inputs
Clock Input (LOW to
HIGH Edge-triggered)
Paralle Outputs
Ground (0V)
Positive Supply Voltage
2
SR
3, 4, 5, 6
7
A to D
SL
9, 10
11
S0, S1
CLOCK
15, 14, 13, 12
8
16
QA to QD
GND
V
CC
IEC LOGIC SYMBOL
M54/M74HC194
2/12
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M74HC194M1R 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 BIT PIPO SHIFT REGISTER
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M74HC195M1R 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8 BIT PIPO SHIFT REGISTER