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零件编号
产品描述 (功能)
LH5481D-25 查看數據表(PDF) - Sharp Electronics
零件编号
产品描述 (功能)
生产厂家
LH5481D-25
Cascadable 64 × 8 FIFO Cascadable 64 × 9 FIFO
Sharp Electronics
LH5481D-25 Datasheet PDF : 16 Pages
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LH5481/91
64
×
8 / 64
×
9 FIFO
SI
INPUT
CONTROL
IR
LOGIC
(LH5491) DI
0
- DI
8
(LH5481) DI
0
- DI
7
DATA IN
MR
MASTER
RESET
WRITE POINTER
WRITE MULTIPLEXER
MEMORY ARRAY
READ MULTIPLEXER
READ POINTER
ALMOST-FULL/
ALMOST-EMPTY
HALF-FULL
...
DATA OUT
OUTPUT
CONTROL
LOGIC
Figure 3. LH5481/91 Block Diagram
AFE
HF
...
DO
0
DO
7
DO
8
(LH5491)
OE
(LH5481)
OR
SO
5481-3
PIN DESCRIPTIONS
PIN
PIN TYPE *
DESCRIPTION
DI
0
– DI
7
I
Data Inputs, LH5481
DO
0
– DO
7
O/Z
Data Outputs, LH5481
DI
0
– DI
8
I
Data Inputs, LH5491
DO
0
– DO
8
O
Data Outputs, LH5491
SI
I
Shift In
SO
I
Shift Out
IR
O
Input Ready
OR
O
Output Ready
* I = Input, O = Output, Z = High-Impedance, V = Power Voltage Level
PIN
HF
AFE
MR
OE
V
CC
V
SS
PIN TYPE *
O
O
I
I
V
V
DESCRIPTION
Half-Full Flag
Almost-Full / Almost-
Empty
Master Reset
Output Enable
(LH5481 only)
Positive Power Supply
Ground
2
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