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’s isolated 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