Isolated RS-485
RS-485 is a multipoint communication network defined by the TIA-485-A/EIA-485-A standard that specifies up to 32 drivers and 32 receivers on a single (2-wire) bus, with modern transceivers improved to allow 256 nodes on the same bus. The differential signaling scheme and wide common-mode tolerance provide excellent noise immunity for high speed communication over long distances and in harsh environments. Analog Devices’ RS-485/RS-422 compliant transceivers support industrial fieldbus, Modbus and PROFIBUS®, process control networks (PLC), building automation (HVAC), and motor control servo drives and encoder applications. Connect with half- or full-duplex models and options that include extended temperature, ultralow skew, enhanced drive strength, full fail-safe and hot swap support, low voltage logic interfaces, integrated termination, and extensive EMC protection against IEC surge, EFT, ESD, and overvoltage faults for the design of RS-485 communication links.
Product Selection Table
Safety and Regulatory Compliance Information
The iCoupler family of digital isolation products have been tested and approved by various regulatory agencies, including UL, CSA, VDE, TÜV, CQC, ATEX and IECEx. This table summarizes the achieved ratings for each product and includes links to copies of the actual safety certificates.
EMC Resources
Whether as a component or as part of a larger system level solution, EMC compliance must be met, and the best EMC design practices occur at the start of the design. Be prepared for the certification process and get ahead of the game with our selection of resources.
Latest Resources
Videos
- Tech Chat with Analog Devices: iCoupler Digital Isolation
- ADI & Mouser Chalk Talk: CbM Impact on Smart Manufacturing
- iCoupler Digital Isolation Precision Training Series SERIES
- 電力およびソーラーアプリケーション用の低EMI絶縁 RS-485
- Protect your Innovations: from High Precision to High Power
Application Notes
- AN-1179: Junction Temperature Calculation for Analog Devices RS-485/RS-422, CAN, and LVDS/M-LVDS Transceivers
- AN-1458: Isolated RS-485 Repeater with Automatic Direction Control (Rev. 0) PDF
- AN-1468: Lightning Protection for Communication Interfaces in Avionics Applications (Rev. 0) PDF
- AN-1461: Options and Solutions for a High Speed or Low Power Signal and Power Isolated RS-485 Fieldbus (Rev. 0) PDF
- AN-1449: Full Hot Swap Support with the ADM3066E for Glitch Free PLC Module Insertion (Rev. 0) PDF
Rarely Asked Questions
Technical Articles
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IBIS Modeling—Part 3: How to Achieve a Quality Level 3 IBIS Model Through Bench Measurement
Analog Dialogue
- Options and Solutions for Partitioning Isolated Power in Isolated RS-485 Nodes
- Polyimide Film Uses for Digital Isolators
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Choosing the Best Vibration Sensor for Wind Turbine Condition Monitoring
Analog Dialogue
- Going Faster and Further with Fieldbus