Why this isolated RS485 part exists
The ADM2484EBRWZ-REEL7 is an Analog Devices iCoupler isolated RS422/RS485 transceiver that solves the common problem of ground loops and common-mode voltage differences on long bus cables. It integrates a magnetic-coupled digital isolator with a differential line driver and receiver, so you get 5000Vrms of galvanic isolation between the bus side and the logic side without needing a separate isolated DC-DC module for the data path. The part handles 500kbps data rate with unidirectional channel configuration — two inputs on side 1, one output on side 2 — which matches the typical RS485 half-duplex transmit/receive pair plus a direction-control signal. Rise and fall times are 450ns typical, giving you a clean edge without excessive EMI at this speed.
5000Vrms isolation — what it buys you
The 5000Vrms isolation rating is the headline spec that separates this from lower-voltage isolated parts. For motor drives, VFDs, solar inverters, or any equipment where the RS485 bus runs between cabinets with different ground potentials, that rating gives you a solid safety margin for reinforced insulation per IEC 60747-5-5. The 25kV/µs common-mode transient immunity means the receiver won't glitch when a nearby IGBT switches — a real concern in inverter-fed environments.
Supply rails and temperature range
Runs from either a 3.3V or 5V supply on the logic side — no dual-rail requirement. The bus side is powered through the same supply, so you need to ensure the isolated side's regulator can source the bus termination current.
Housed in a 16-pin SOIC wide-body (7.50mm width) — the standard footprint for this class of isolated transceiver. Surface-mount only.
ROHS3 compliant per the manufacturer's statement.