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參數(shù)資料
| 型號： | 74LCX32373 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Low Voltage 32-Bit Transparent Latch with 5V Tolerant Inputs and Outputs Preliminary |
| 中文描述： | 低電壓32位透明鎖存器與5V容限輸入和輸出的初步 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 252K |
| 代理商： | 74LCX32373 |
Preliminary
www.fairchildsemi.com
2
7
Connection Diagram
(Top Thru View)
Pin Descriptions
FBGA Pin Assignments
Truth Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Z
=
High Impedance
O
0
=
Previous O
0
before HIGH-to-LOW transition of Latch Enable
Functional Description
The LCX32373 contains thirty-two D-type latches with
3-STATE standard outputs. The device is byte controlled
with each byte functioning identically, but independent of
the other. Control pins can be shorted together to obtain full
32-bit operation. The following description applies to each
byte. When the Latch Enable (LE
n
) input is HIGH, data on
the I
n
enters the latches. In this condition the latches are
transparent, i.e. a latch output will change state each time
its I input changes. When LE
n
is LOW, the latches store
information that was present on the I inputs a setup time
preceding the HIGH-to-LOW transition of LE
n
. The
3-STATE standard outputs are controlled by the Output
Enable (OE
n
) input. When OE
n
is LOW, the standard out-
puts are in the 2-state mode. When OE
n
is HIGH, the stan-
dard outputs are in the high impedance mode but this does
not interfere with entering new data into the latches.
Pin Names
Description
OE
n
LE
n
I
0
- I
31
O
0
- O
31
Output Enable Input (Active LOW)
Latch Enable Input
Inputs
Outputs
1
2
3
4
5
6
A
B
C
D
E
F
G
O
1
O
3
O
5
O
7
O
9
O
11
O
13
O
14
O
17
O
19
O
21
O
23
O
25
O
27
O
29
O
30
O
0
O
2
O
4
O
6
O
8
O
10
O
12
O
15
O
16
O
18
O
20
O
22
O
24
O
26
O
28
O
31
OE
1
GND
V
CC
GND
GND
V
CC
GND
LE
1
GND
V
CC
GND
GND
V
CC
GND
I
0
I
2
I
4
I
6
I
8
I
10
I
12
I
15
I
16
I
18
I
20
I
22
I
24
I
26
I
28
I
31
I
1
I
3
I
5
I
7
I
9
I
11
I
13
I
14
I
17
I
19
I
21
I
23
I
25
I
27
I
29
I
30
H
OE
2
OE
3
GND
V
CC
GND
GND
V
CC
GND
LE
2
LE
3
GND
V
CC
GND
GND
V
CC
GND
J
K
L
M
N
P
R
T
OE
4
LE
4
Inputs
Outputs
LE
n
OE
n
I
n
O
n
X
H
X
Z
H
L
L
L
H
L
H
H
L
L
X
O
0
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相關代理商/技術參數(shù) |
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| 74LCX32373GX | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low Voltage 32-Bit Transparent Latch with 5V Tolerant Inputs and Outputs Preliminary |
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