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參數(shù)資料
| 型號(hào)： | M74HC194B1R |
| 廠商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 計(jì)數(shù)移位寄存器 |
| 英文描述： | HC/UH SERIES, 4-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大小： | 549K |
| 代理商： | M74HC194B1R |
M74HC194
2/12
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
a ~ d
: The level of steady state input voltage at input A ~ D
QA0 ~ QD0 : No Change
QAn ~ QDn : The level of QA, QB, QC, respectively, before the most recent positive transition of the clock.
PIN No
SYMBOL
NAME AND FUNCTION
1
CLEAR
Asynchronous Reset
Input (Active LOW)
2SR
Serial Data Input (Shift
Right)
3, 4, 5, 6
A to D
Parallel Data Inputs
7SL
Serial Data Input
(Shift Left)
9, 10
S0, S1
Mode Control Inputs
11
CLOCK
Clock Input (LOW to
HIGH Edge-triggered)
15, 14, 13,
12
QA to QD
Parallel Outputs
8
GND
Ground (0V)
16
Vcc
Positive Supply Voltage
INPUTS
OUTPUTS
CLEAR
MODE
CLOCK
SERIAL
PARALLEL
QA
QB
QC
QD
S1
S0
LEFT
RIGHT
A
B
C
D
L
X
XXX
X
L
H
X
QA0
QB0
QC0
QD0
H
X
a
b
c
d
abcd
H
L
H
X
H
X
H
QAn
QBn
QCn
H
L
H
X
L
X
L
QAn
QBn
QCn
H
L
H
X
QBn
QCn
QDn
H
L
X
QBn
QCn
QDn
L
H
L
X
QA0
QB0
QC0
QD0
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| M74HC194C1R | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 BIT PIPO SHIFT REGISTER |
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| M74HC195B1R | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8 BIT PIPO SHIFT REGISTER |
| M74HC195C1R | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8 BIT PIPO SHIFT REGISTER |
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