Isolation for RS-485
1
Example RS-485 Isolation Block Diagram2 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 Number | Voltage Range | Isolation Voltage | Data Rate | Power |
|---|---|---|---|---|
| ISOW1432 | 1.71 - 5.5 V | 5 kVrms | 12 Mbps | Integrated isolated power |
| ISOW1412 | 500 kbps | |||
| ISO1500 | 3 kVrms | 1 Mbps | Signal Isolation | |
| ISO14xx | 5 kVrms | 500 kbps – 50 Mbps | ||
| ISO35T | 3 - 3.6 V | 2.5 kVrms | 1 Mbps | Integrated transformer driver |
| ISO3086T | 3 - 5.5 V | 20 Mbps | ||
| ISO1176T | 40 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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