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參數(shù)資料
| 型號： | SP491ES |
| 元件分類： | RS-485 |
| 英文描述： | Full Duplex RS-485 Transceivers |
| 中文描述： | 全雙工RS - 485接口收發(fā)器 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 83K |
| 代理商： | SP491ES |
4
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
Copyright 2004 Sipex Corporation
Figure 6. Driver Propagation Delays
+3V
0V
DE
5V
V
OL
A, B
0V
1.5V
1.5V
t
ZL
t
ZH
f = 1MHz; t
R
< 10ns; t
F
< 10ns
V
OH
A, B
2.3V
2.3V
t
LZ
t
HZ
0.5V
0.5V
Output normally LOW
Output normally HIGH
Figure 7. Driver Enable and Disable Times
Figure 8. Receiver Propagation Delays
+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
f = 1MHz; t
R
< 10ns; t
F
< 10ns
V
O
1/2V
O
1/2V
O
t
PHL
t
DPLH
t
DPHL
t
SKEW =
|
t
DPLH -
t
DPHL
|
V
OH
V
OL
R
1.5V
1.5V
t
PHL
f = 1MHz; t
R
< 10ns; t
F
< 10ns
OUTPUT
V
0D2
+
V
0D2
–
A – B
0V
0V
t
PLH
INPUT
t
SKEW =
|
t
PHL -
t
PLH
|
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP491ES-L | 功能描述:RS-485接口IC Full Duplex RS-485 s RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| SP495 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Quad Differential RS-485 Transceiver |
| SP4959-16XP90 | 制造商:PCTEL 功能描述:ANTENNA UNIT |
| SP495CT | 制造商:Exar Corporation 功能描述:Line Transceiver, 4-Driver, 4-Receiver, 20 Pin, Plastic, SOP |
| SP495CT-L | 制造商:Exar Corporation 功能描述:TRANSCEIVER RS-485 QUAD WSOIC20 |
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