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  • Isolation for RS-485

    • SLLT219 August   2022 ISO1176T , ISO1410 , ISO1412 , ISO1430 , ISO1432 , ISO1450 , ISO1452 , ISO1500 , ISO3086T , ISO35T , ISOW1412 , ISOW1432

       

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  • Isolation for RS-485
  1. 11
  2. 2Design Considerations
  3. 3Recommended Parts
  4. IMPORTANT NOTICE
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PRODUCT OVERVIEW

Isolation for RS-485

1

GUID-20220719-SS0I-54XF-BPZB-T27MF0N67CH3-low.gif Example RS-485 Isolation Block Diagram

2 Design Considerations

  • Prevents DC and unwanted AC currents between controller devices and peripheral ICs
  • Allows signal and power transfer between controller devices and peripheral ICs
  • Protects low voltage parts in a system from high voltage circuits
  • Diminishes the effect of ground potential difference
  • [FAQ] ISO1410: What is the relationship between cable length and data rate for TI’sisolated RS-485 transceivers?
  • [FAQ] How do you generate isolated power for an isolated RS-485 node?
  • How to Isolate Signal and Power for an RS-485 System
  • Isolated RS-485 Transceiver Reference Design
  • Top 7 design questions about isolated RS-485 transceivers
  • Digital Isolator Design Guide
  • Need additional assistance? Ask our engineers a question on the TI E2E™ Isolation Support Forum

3 Recommended Parts

Part NumberVoltage RangeIsolation VoltageData RatePower
ISOW14321.71 - 5.5 V5 kVrms12 MbpsIntegrated isolated power
ISOW1412500 kbps
ISO15003 kVrms1 MbpsSignal Isolation
ISO14xx5 kVrms500 kbps – 50 Mbps
ISO35T3 - 3.6 V2.5 kVrms1 MbpsIntegrated transformer driver
ISO3086T3 - 5.5 V20 Mbps
ISO1176T40 Mbps

For more devices, browse through the online parametric tool where you can sort by desired voltage, channel numbers, and other features.

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