General Description
The MAX3535E/MXL1535E isolated RS-485/RS-422 full duplex transceivers provide 2500VRMS of galvanic isolation between the RS-485/RS-422 side and the processor or control logic side. These devices allow fast, 1000kbps communication across an isolation barrier when the common-mode voltages (i.e., the ground potentials) on either side of the barrier are subject to large differences. Isolation is achieved through integrated high-voltage capacitors. The MAX3535E/MXL1535E also feature a 420kHz transformer driver that allows power transfer to the RS-485 side using an external transformer

Features
♦ 2500VRMS RS-485 Bus Isolation Using On-Chip
   High-Voltage Capacitors
♦ 1000kbps Full-Duplex RS-485/RS-422 Communication
♦ +3V to +5.5V Power-Supply Voltage Range (MAX3535E)
♦ +4.5V to +5.5V Power-Supply Voltage Range (MXL1535E)
♦ 1/8 Unit Receiver Load, Allowing 256 Devices on Bus
♦ ±15kV ESD Protection Using HBM
♦ Pin-Selectable Slew-Rate Limiting Controls EMI
♦ Hot-Swap-Protected Driver-Enable Input
♦ Undervoltage Lockout
♦ Isolation-Barrier Fault Detection
♦ Short-Circuit Protected
♦ Thermal Shutdown
♦ Open-Line and Shorted-Line Fail-Safe Receiver Inputs

Applications
   Isolated RS-485 Systems
   Systems with Large Common-Mode Voltages
   Industrial-Control Local Area Networks
   Telecommunications Systems