MAX3535ECWI+

MAX3535ECWI+ is an isolated RS-485/RS-422 full-duplex transceiver that provides 2500VRMS of galvanic isolation between the RS-485/RS-422 side and the processor or control logic side. This device allows 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. It also features a 420KHz transformer driver that allows power transfer to the RS-485 side using an external transformer. It includes one differential driver, one receiver, and internal circuitry to send the RS-485 signals and control signals across the isolation barrier (including the isolation capacitors). It is used in applications such as isolated RS-485 systems, systems with large common-mode voltages, industrial-control local area networks, telecommunications systems.

• 2500VRMS RS-485 bus isolation using on-chip high-voltage capacitors
• Power-supply voltage range from +3V to +5.5V
• 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, logic-side supply voltage from 3V to 5.5V
• Logic-side supply current is 5.9mA typical at (VCC1 = +3.0V to +5.5V)
• Receiver input current is +125µA maximum at (VA or VB = +12V)
• Data sample jitter is 220ns typical at (VCC1 = +3.0V to +5.5V)
• Operating temperature range from 0°C to +70°C, 28-pin WSOIC package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party