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ADM485EARZ

更新时间： 2024-11-24 04:04:39
品牌 Logo 应用领域
亚德诺 - ADI 线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
16页 324K
描述
5 V, 【15 kV ESD Protected Half-Duplex, RS-485/RS-422 Transceivers

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ADM485EARZ 数据手册

 浏览型号ADM485EARZ的Datasheet PDF文件第2页浏览型号ADM485EARZ的Datasheet PDF文件第3页浏览型号ADM485EARZ的Datasheet PDF文件第4页浏览型号ADM485EARZ的Datasheet PDF文件第5页浏览型号ADM485EARZ的Datasheet PDF文件第6页浏览型号ADM485EARZ的Datasheet PDF文件第7页 
5 V, ± ±5 ꢀV ꢁES ꢂProteotꢃ  
Half-Supltx, RE-485/RE-422 TPansetivtPs  
ASM485ꢁ/ASM487ꢁ/ASM±487ꢁ  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
V
CC  
TIA/EIA RS-485-/RS-422-compliant  
ESD protection on RS-485 I/O pins  
15 kV human body model  
ADM485E/  
ADM487E/  
ADM1487E  
Data rates  
ADM487E: 250 kbps  
ADM485E/ADM1487E: 2.5 Mbps  
Half-duplex options  
RO  
RE  
R
A
B
Reduced slew rates for low EMI  
−7 V to +12 V common-mode input range  
Thermal shutdown and short-circuit protection  
8-lead SOIC packages  
DE  
DI  
D
GND  
APPLICATIONS  
Figure 1.  
Energy/power metering  
Lighting systems  
Industrial control  
Telecommunications  
Security systems  
Instrumentation  
GENERAL DESCRIPTION  
The ADM485E/ADM487E/ADM1487E are 5 V, low power  
data transceivers with 15 kV ESD protection suitable for half-  
duplex communication on multipoint bus transmission lines.  
They are designed for balanced data transmission and comply  
with Telecommunication Industry Association/Electronics Indus-  
tries Association (TIA/EIA) standards RS-485 and RS-422. The  
ADM487E and ADM1487E have a 1/4 unit load receiver input  
impedance that allows up to 128 transceivers on a bus, whereas  
the ADM485E allows up to 32 transceivers on a bus. Because  
only one driver is enabled at any time, the output of a disabled or  
power-down driver is three-stated to avoid overloading the bus.  
The driver outputs are slew rate-limited to reduce EMI and data  
errors caused by reflections from improperly terminated buses.  
Excessive power dissipation caused by bus contention or output  
shorting is prevented with a thermal shutdown circuit.  
The parts are fully specified over the industrial temperature  
ranges and are available in 8-lead SOIC packages.  
Table 1. Selection Table  
Guaranteed  
Half-/Full- Data Rate  
Part  
Number  
Slew Rate Low Power Driver/Receiver Quiescent  
Number of  
Nodes on Bus Count  
Pin  
Duplex  
(Mbps)  
Limited  
Shutdown  
Enable  
Current (μA)  
ADM485E  
ADM487E  
ADM1487E Half  
Half  
Half  
2.5  
0.25  
2.5  
No  
Yes  
No  
No  
Yes  
No  
Yes  
Yes  
Yes  
300  
120  
230  
32  
128  
128  
8
8
8
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
 
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ADM485EARZ 替代型号

型号 品牌 替代类型 描述 数据表
ADM485EARZ-REEL7 ADI

完全替代

 5 V, 【15 kV ESD Protected Half-Duplex, RS-485
ST485CDR STMICROELECTRONICS

功能相似

 LOW POWER RS-485/RS-422 TRANSCEIVER
ST485BDR STMICROELECTRONICS

功能相似

 LOW POWER RS-485/RS-422 TRANSCEIVER

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ADM485JN ADI

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ADM485JR-REEL ADI

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