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參數(shù)資料
| 型號(hào)： | SP481 |
| 英文描述： | Low Power Half-Duplex RS-485 Transceivers |
| 中文描述： | 低功耗半雙工RS - 485收發(fā)器 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大小： | 78K |
| 代理商： | SP481 |
6
Rev. 07/16/02
SP481/483/485 Low Power Half-Duplex RS485 Transceivers
Copyright 2002 Sipex Corporation
Figure 6. Driver Propagation Delays
A
V
OD
V
OC
B
R
R
Figure 1. Driver DC Test Load Circuit
Figure 2. Receiver Timing Test Load Circuit
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2 Circuit
RL
1K
S
2
S
1
V
CC
1K
Test Point
Receiver
Output
B
A
DI
B
A
C
L1
C
L2
R
DIFF
DE
3V
RO
15pF
S
2
S
1
V
CC
C
L
500
Output
Under
Test
INPUTS
OUTPUTS
LINE
RE
X
X
X
X
DE
1
1
0
1
DI CONDITION
1
No Fault
0
No Fault
X
X
Fault
B
0
1
Z
Z
A
1
0
Z
Z
X
INPUTS
RE
0
0
0
1
OUTPUTS
R
1
0
1
Z
DE
0
0
0
0
A - B
+0.2V
-0.2V
Inputs Open
X
Table 1. Transmit Function Truth Table
Table 2. Receive Function Truth Table
+3V
0V
DI
B
A
DRIVER
OUTPUT
V
O
+
V
O
DIFFERENTIAL
OUTPUT
V
A
– V
B
0V
1.5V
1.5V
t
PLH
–
t
R
t
F
V
O
1/2V
O
1/2V
O
t
PHL
t
DPLH
t
DPHL
t
SKEW =
|
t
DPLH -
t
DPHL
f
|
SP481/485
=
1MHz; f
SP483
=
100kHz
; t
R
< 10ns; t
F
< 10ns
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SP481_04 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Half-Duplex RS-485 Transceivers |
| SP481CN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Half-Duplex RS-485 Transceivers |
| SP481CN/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Half-Duplex RS-485 Transceivers |
| SP481CS | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Half-Duplex RS-485 Transceivers |
| SP481E | 制造商:EXAR 制造商全稱:EXAR 功能描述:Enhanced Low Power Half-Duplex RS-485 Transceivers |
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