5kV Industrial Signal Isolator – RS485 / RS232 / CAN Bus / UART Noise & Ground Loop Fix

Protect your systems from electrical noise and ground loops with this high-performance universal signal isolator. Engineered for industrial, automotive, and embedded applications, it provides 5kV galvanic isolation for safe and reliable communication.

This plug-and-play device isolates a wide range of common communication protocols, including CANBUS, UART, RS232, RS485, and SPI (note: I²C is not supported). With integrated ESD protection and built-in level shifting between 3.3V and 5V logic, it’s the perfect drop-in solution for robust signal integrity.

Key Features are:

• Isolates CANBUS, UART, RS232, RS485, Digital I/O and SPI
• 3 in/ 1 out and 1 in/ 3 out Signal Routing Options
• Integrated EST, EFT and Lightning Surge Protection
• Selectable 3.3V or 5V Isolate Output
• 5kV Isolation
• Plug and Play with No Configuration Needed

Use this if you are experiencing:

• RS485 or CAN bus communication errors in noisy environments
• Equipment resets or data corruption during EMC testing
• Ground loop issues between devices
• Failures during ESD, EFT or surge testing
• Long cable runs causing unstable serial comms
• Interfacing 3.3V ↔ 5V systems safely

Why this isolator is different

• Multi-protocol support
  Works with RS485, RS232, CAN bus, UART and SPI
• 5kV galvanic isolation
  Breaks ground loops and protects against high voltage transients
• Integrated EMC protection
  Helps mitigate ESD, EFT and surge-related issues
• Plug-and-play operation
  No configuration or software required
• Compact and easy to integrate
  Ideal for both bench testing and permanent installation

For more information see the datasheet here.