参数资料
型号: 74VHC594
厂商: 意法半导体
英文描述: 8 BIT SHIFT REGISTER WITH OUTPUT REGISTER
中文描述: 8位元移位寄存器与输出寄存器
文件页数: 2/14页
文件大小: 308K
代理商: 74VHC594
74VHC594
2/14
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
X: Don’t Care
PIN N°
SYMBOL
NAME AND FUNCTION
1, 2, 3, 4, 5,
6, 7, 15
9
10
11
13
QA to QH
Data Outputs
QH’
SCLR
SCK
RCLR
Serial Data Output
Shift Register Clear Input
Shift Register Clock Input
Storage Register Clear
Input
Serial Data Input
Storage Register Clock
Input
Ground (0V)
Positive Supply Voltage
14
12
SI
RCK
8
GND
V
CC
16
INPUTS
OUTPUTS
SI
SCK
SCLR
RCK
RCLR
X
X
L
X
X
SHIFT REGISTER IS CLEAR
FIRST STAGE OF SHIFT REGISTER GOES LOW
OTHER STAGES STORE THE DATA OF PREVI-
OUS STAGE, RESPECTIVELY
FIRST STAGE OF SHIFT REGISTER GOES HIGH
OTHER STAGES STORE THE DATA OF PREVI-
OUS STAGE, RESPECTIVELY
L
H
X
X
H
H
X
X
L
X
H
X
X
X
X
L
SHIFT REGISTER STATE IS NOT CHANGED
STORAGE REGISTER IS CLEARED
SHIFT REGISTER DATA IS STORED IN THE
STORAGE REGISTER
STORAGE REGISTER STATE IS NOT CHANGED
X
X
X
X
H
X
X
X
H
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