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參數(shù)資料
| 型號(hào)： | MAX1481-MAX1486 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
| 中文描述： | 軟件可選，Half-/Full-Duplex，擺率限制，12Mbps的，RS-485/RS-422收發(fā)器在レ最大包 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 184K |
| 代理商： | MAX1481-MAX1486 |
M
Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in μMAX Package
______________________________________________________________________________________
13
Line Length vs. Data Rate
The RS-485/RS-422 standard covers line lengths up to
4000 feet. For line lengths greater than 4000 feet, use
the repeater application shown in Figure 16.
Figures 17 and 18 show the system differential voltage
for the parts driving 4000 feet of 26AWG twisted-pair
wire into 120
loads.
T ypic al Applic ations
The MAX1485/MAX1486 are designed for bidirectional
data communications on multipoint bus transmission
lines. Figures 19 and 20 show typical network applica-
tions circuits. These parts can also be used as line
repeaters with cable lengths longer than 4000 feet
(Figure 16).
To minimize reflections, terminate the line at both ends
in its characteristic impedance, and keep stub lengths
off the main line as short as possible. The slew-rate-lim-
ited MAX1481/MAX1485 are more tolerant of imperfect
termination than the MAX1484/MAX1486.
20dB/div
250kHz/div
2.5MHz
0Hz
M
Figure 15. Driver Output Waveform and FFT Plot of
MAX1481/MAX1485 Transmitting a 20kHz Signal
120
120
DATA IN
DATA OUT
R
D
RO
RE
DE
DI
H/F
A
B
Z
Y
MAX1481
MAX1484
MAX1485
MAX1486
NOTE: RE ON MAX1481 AND MAX1484 ONLY.
H/F ON MAX1485 AND MAX1486 ONLY.
Figure 16. Line Repeater
V
A
- V
B
DI
RO
5V/div
5V/div
4V/div
5
μ
s/div
MAX1481/4/5/6-fig17
Figure 17. MAX1481/MAX1485 System Differential Voltage at
50kHz Driving 4000 ft. of Unterminated Cable
V
A
- V
B
DI
RO
5V/div
5V/div
4V/div
1
μ
s/div
MAX1481/4/5/6-fig18
Figure 18. MAX1484/MAX1486 System Differential Voltage at
200kHz Driving 4000 ft. of Unterminated Cable
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1481CUB | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
| MAX1481EUB | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
| MAX1484CUB | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
| MAX1484EUB | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
| MAX1485EUB | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| MAX14820EETG+T | 制造商:Maxim Integrated Products 功能描述: |
| MAX14820ETG+ | 功能描述:輸入/輸出控制器接口集成電路 IO-Link Device Transceiver RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX14820ETG+T | 功能描述:輸入/輸出控制器接口集成電路 IO-Link Device Transceiver RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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| MAX14821ETG+ | 功能描述:輸入/輸出控制器接口集成電路 NEW RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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