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ADM2486:  2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver

Product Details


The ADM24861 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI TIA/EIA RS-485-A and ISO 8482:1987(E).

The device employs Analog Devices’ iCoupler technology to combine a 3-channel isolator, a 3-state differential line driver, and a differential input receiver into a single package. The logic side of the device can be powered with either a 5 V or a 3 V supply while the bus side is powered with a 5 V supply.

The ADM2486 driver has an active high enable. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output port that imposes minimal loading on the bus when the driver is disabled or when VDD1 or VDD2 =0. Also provided is an active high receiver disable that causes the receive output to enter a high impedance state.

The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention might cause excessive power dissapation.

FEATURES and BENEFITS

  • Half-duplex, isolated RS-485 transceiver
  • PROFIBUS® compliant
  • ANSI EIA/TIA 485-A and ISO 8482: 1987(E) compliant
  • 20 Mbps data rate
  • 5 V or 3 V operation (VDD1)
  • High common-mode transient immunity:
    >25 kV/μs
  • Isolated DE status output
  • Receiver open-circuit, fail-safe design
  • Thermal shutdown protection
  • 50 nodes on bus
  • Safety and regulatory approvals
    --UL recognition—2500 VRMS for 1 minute per UL 1577
    --CSA Component Acceptance Notice #5A
  • VDE Certificate of Conformity
    DIN V VDE 0884-10
    (VDE V 0884-10): 2006-12
  • VIORM = 560 V peak
  • Operating temperature range: −40°C to +85°C
  • Wide body, 16-lead SOIC package

Functional Block Diagram for ADM2486

Enter values and click on PowerMe to find power solutions for this IC. PowerMe launch of ADIsimPower Voltage Regulator Design Tool
(Nominal) For IC being powered
Available System Voltage V Operating Voltage Rail V Load Current A

Documentation

Title Content Type File Type
ADM2486: High Speed, Half-Duplex iCoupler® Isolated RS-485 Transceiver Data Sheet (Rev E, 11/2013) (pdf, 554 kB) Data Sheets PDF
AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format  (pdf, 671 kB) Application Notes PDF
AN-960: RS-485/RS-422 Circuit Implementation Guide  (pdf, 245 kB) Application Notes PDF
AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices  (pdf, 406 kB) Application Notes PDF
AN-913: Isolating I2C Interfaces  (pdf, 280 kB) Application Notes PDF
AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products  (pdf, 246 kB) Application Notes PDF
AN-825: Power Supply Considerations in iCoupler Isolation Products  (pdf, 181 kB) Application Notes PDF
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.
Webcasts WEBCAST
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.
Webcasts WEBCAST
UG-240: Evaluation Board for the ADM2486 High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver  (pdf, 179 kB) User Guides PDF
High-Performance Multichannel Power-Line Monitoring with Simultaneous-Sampling ADCs
By Colm Slattery, Analog Devices, Inc. (Analog Dialogue, Vol. 41, January 2007)
Analog Dialogue HTML
MS-2155: Options and Solutions for Partitioning Isolated Power in Isolated RS-485 Nodes  (pdf, 290 kB) Technical Articles PDF
MS-2127: Designing with iCoupler Digital Isolators in Solar PV Inverters  (pdf, 141 kB) Technical Articles PDF
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary  (pdf, 291 kB)
By Flow Zhao, Design Engineer
Technical Articles PDF
NAppkin Note: Lowering the Power of the ADuM524x  (pdf, 223 kB)
By Mark Cantrell, Senior Applications Engineer
Technical Articles PDF
Digital Isolator Product Selection and Resource Guide  (pdf, 640 kB) Product Selection Guide PDF
Analog Devices Achieves Major Milestone by Shipping 1 Billionth Channel of iCoupler Digital Isolation (19 Sep 2013) Press Releases HTML
Brochure: Motor and Power Control Solutions  (pdf) Overview PDF
2008 Medical Solution Profile  (pdf, 126 kB)
High Performance ICs for Medical Imaging, Patient Monitoring, and Instrumentation
Overview PDF
Industrial Automation Solutions  (pdf, 6110 kB) Overview PDF
iCoupler Digital Isolators Qualified for Automotive Applications Overview HTML
isoPower® - Isolated dc-to-dc Power in the smallest Package Overview HTML
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4  (pdf, 1496 kB) Solutions Bulletins PDF
Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3  (pdf, 1334 kB) Solutions Bulletins PDF
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

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

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.

SampleSample & Buy

Price, packaging, availability

ADM2486 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM2486BRW Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $6.43 $5.83 N  Material Info PCN Purchase
ADM2486BRW-REEL Status: Contact ADI 16 ld SOIC - Wide 16 Ind Reel, 1000 - - N  Material Info PCN/PDN Contact ADI
ADM2486BRWZ Status: Production 16 ld SOIC - Wide 16 Ind Tube, 47 $4.03 $3.50 Y  Material Info PCN Purchase Sample
ADM2486BRWZ-REEL Status: Production 16 ld SOIC - Wide 16 Ind Reel, 1000 - $3.50 Y  Material Info PCN Purchase
Price Table Help

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.

ezLINX™ iCoupler® Isolated Interface Development Environment
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EZLINX-IIIDE-EBZ Status: Production iCoupler® Isolated Interface Development Environment Evaluation Board $149.00 Yes -
ADM2486 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADM2486EBZ Status: Production Evaluation Board $75.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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