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零件编号
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HCF4724BEY 查看數據表(PDF) - STMicroelectronics
零件编号
产品描述 (功能)
生产厂家
HCF4724BEY
8 BIT ADDRESSABLE LATCH
STMicroelectronics
HCF4724BEY Datasheet PDF : 14 Pages
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HCF4724B
IINPUT EQUIVALENT CIRCUIT
FUNCTIONAL DIAGRAM
PIN DESCRIPTION
PIN No
1, 2, 3
4, 5, 6, 7, 9,
10, 11, 12
13
15
14
8
16
SYMBOL NAME AND FUNCTION
A0 to A2 Address Inputs
Q0 to Q7 Latch Outputs
DATA
RESET
WRITE
DISABLE
V
SS
V
DD
Data Inputs
Reset Input
Write Disable Input
Negative Supply Voltage
Positive Supply Voltage
TRUTH TABLE
SELECT INPUTS
LATCH ADDRESSED
C
B
A
L
L
L
Q0
L
L
H
Q1
L
H
L
Q2
L
H
H
Q3
H
L
L
Q4
H
L
H
Q5
H
H
L
Q6
H
H
H
Q7
INPUTS
WRITE DISABLE
RESET
OUTPUTS OF
ADDRESSED
LATCH
EACH OTHER
OUTPUT
FUNCTION
L
L
D
Qi0
ADDRESSABLE LATCH
L
H
Qi0
Qi0
MEMORY
H
L
D
L
DEMULTIPLEXER
H
H
L
L
CLEAR ALL BITS TO "0"
D: The level at the data input ; Q
i0
The level before the indicated steady state input conditions were established, (i=0, 1,...7)
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