ANALOG DEVICES MAX3535EEWI+

MAX3535EEWI+ is an isolated RS-485/RS-422 full duplex transceiver in a 28 pin WSOIC package. It 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. The MAX3535E also features a 420kHz transformer driver that allows power transfer to the RS-485 side using an external transformer. MAX3535E 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). The MAX3535E RS-485 receiver is 1/8 unit load, allowing up to 256 devices on the same bus.