The ADM2484E is an isolated data transceiver with ±15 kV ESD protection suitable for high speed, half- or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter outputs and receiver inputs share the same transmission line. Transmitter Output Pin Y links externally to Receiver Input Pin A, and Transmitter Output Pin Z links externally to Receiver Input Pin B.
Designed for balanced transmission lines, the ADM2484E complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package.
The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection up to ±15 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3.3 V supply, whereas the bus side requires an isolated 3.3 V supply.
The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention causes excessive power dissipation.Applications
|Title||Content Type||File Type|
|ADM2484E: 500 kbps, ESD Protected, Half-/Full-Duplex, iCoupler, Isolated RS-485 Transceiver Data Sheet (Rev D, 03/2014) (pdf, 442 kB)||Data Sheets|
|AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (pdf, 671 kB)||Application Notes|
|AN-960: RS-485/RS-422 Circuit Implementation Guide (pdf, 245 kB)||Application Notes|
Solving Isolation Challenges in Power Conversion Applications
This webcast will present solutions to isolation challenges in power conversion applications. Among the topics to be discussed are the limitations of traditional methods of isolation (such as utilization of optocouplers and pulse transformers) vs. more efficient and cost effective solutions that utilize digital isolators. If you are currently using optocouplers and pulse transformers, this is a webcast you should attend.
Solving Isolation Challenges in Industrial Automation
This webcast will discuss the role isolation plays in providing protection and reducing the system bit-error-rate, using the specific design challenges of an RS-485 network. Topics to be covered in this presentation will include: Why and when one should isolate, Types of isolation and their advantages, Design Considerations for an RS-485 node (and how this translates to design considerations for signal isolation) as well as many other topics.
|UG-301: Evaluation Board for the ADM2484E 5 kV Signal Isolated, ESD Protected, 500 kbps, Half-/Full Duplex, iCoupler, Isolated RS-485 Transceiver (pdf, 224 kB)||User Guides|
High-Performance Multichannel Power-Line Monitoring with Simultaneous-Sampling ADCs
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|How do I learn about new iCoupler products?||FAQs/RAQs||HTML|
|Are iCoupler products Pb-free?||FAQs/RAQs||HTML|
|Can I replace an optocoupler with an iCoupler product in an existing design?||FAQs/RAQs||HTML|
|What are some of the distinguishing features of the iCoupler products?||FAQs/RAQs||HTML|
|What communications protocols are supported by iCoupler products?||FAQs/RAQs||HTML|
|What are the different types of iCoupler products?||FAQs/RAQs||HTML|
|Do iCoupler products have VDE certification for reinforced insulation?||FAQs/RAQs||HTML|
|With which regulatory standards do iCoupler products comply?||FAQs/RAQs||HTML|
|How much isolation can iCoupler products provide?||FAQs/RAQs||HTML|
|What are the benefits of iCoupler technology?||FAQs/RAQs||HTML|
|What is iCoupler technology?||FAQs/RAQs||HTML|
|What types of technologies have been used to provide isolation?||FAQs/RAQs||HTML|
|What are optocouplers? What is optical isolation?||FAQs/RAQs||HTML|
|What is capacitive isolation?||FAQs/RAQs||HTML|
|What regulatory standards address isolation products?||FAQs/RAQs||HTML|
|What is isolation? Why is it needed?||FAQs/RAQs||HTML|
|What are common applications that use isolation?||FAQs/RAQs||HTML|
|How is isolation specified?||FAQs/RAQs||HTML|
|What is isolation rating?||FAQs/RAQs||HTML|
|What is the relationship between working voltage and isolation rating?||FAQs/RAQs||HTML|
|What is the difference between basic and double (or reinforced) insulation levels?||FAQs/RAQs||HTML|
|What are transient immunity and common-mode rejection?||FAQs/RAQs||HTML|
|What other parameters are important when considering an isolation device?||FAQs/RAQs||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
The ezLINX™ iCoupler® Isolated Interface Development Environment provides developers with a cost-effective, plug and play method for evaluation eight physical layer, digitally-isolated communication standards.
Evaluation board for evaluating the ADM2484E 5 kV Signal Isolated, ESD Protected, 500 kbps, Full/Half Duplex RS-485 Transceiver
Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.