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參數(shù)資料
| 型號(hào)： | 74LCX32374GX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Low Voltage 32-Bit D-Type Flip-Flop with 5V Tolerant Inputs and Outputs Preliminary |
| 中文描述： | LVC/LCX/Z SERIES, QUAD 8-BIT DRIVER, TRUE OUTPUT, PBGA96 |
| 封裝： | 5.50 MM, PLASTIC, MO-205, FBGA-96 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大小： | 189K |
| 代理商： | 74LCX32374GX |
Preliminary
www.fairchildsemi.com
2
7
Connection Diagram
(Top Thru View)
Functional Description
The LCX32374 consists of thirty-two edge-triggered
flip-flops with individual D-type inputs and 3-STATE true
outputs. The device is byte controlled with each byte func-
tioning identically, but independent of the other. The control
pins can be shorted together to obtain full 32-bit operation.
Each byte has a buffered clock and buffered Output Enable
common to all flip-flops within that byte. The description
which follows applies to each byte. Each flip-flop will store
the state of their individual D inputs that meet the setup and
hold time requirements on the LOW-to-HIGH Clock (CP
n
)
transition. With the Output Enable (OE
n
) LOW, the con-
tents of the flip-flops are available at the outputs. When
OE
n
is HIGH, the outputs go to the high impedance state.
Operation of the OE
n
input does not affect the state of the
flip-flops.
Pin Descriptions
FBGA Pin Assignments
Truth Table
X
=
Immaterial
Z
=
High Impedance
O
0
=
Previous O
0
before HIGH-to-LOW of CP
Pin Names
Description
OE
n
CP
n
I
0
–
I
31
O
0
–
O
31
Output Enable Input (Active LOW)
Clock Pulse 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
CP
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
CP
2
CP
3
GND
V
CC
GND
GND
V
CC
GND
J
K
L
M
N
P
R
T
OE
4
CP
4
Inputs
Outputs
CP
n
OE
n
L
L
L
H
I
n
H
L
X
X
O
n
H
L
O
0
Z
L
X
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