The 5000 Vrms isolation rating is the standout spec here — it qualifies the part for reinforced isolation in motor-drive interfaces, solar inverter comms, and medical equipment where a 2500 Vrms part would need external protection. Propagation delay is a symmetrical 60 ns max in both directions, so half-duplex turnaround doesn't accumulate skew that eats into the bit timing budget at 16 Mbps.
Supply rails and temperature range — bridging legacy and modern logic
Rated for both 3V and 5V supplies, the ADM2490EBRWZ can sit on a 3.3V microcontroller UART and still drive a 5V RS-485 bus without external level translation — one less component on the BOM. The 25 kV/µs common-mode transient immunity means the receiver won't glitch when a motor drive or VFD couples fast transients across the isolation barrier.
Package and footprint — 16-SOIC wide-body
Housed in a 16-SOIC wide-body (7.50 mm width) package, surface-mount only. The wide-body SOIC gives better creepage distance for the 5000 Vrms rating compared to a narrow SOIC — layout engineers should maintain the recommended clearance under the part on the PCB. No isolated power output on this variant; the bus-side VCC comes from an external supply.