Isolated RS-485/RS-422 transceiver with 20 Mbps throughput
The Analog Devices ADM2486BRWZ-REEL is a 3-channel bidirectional isolated RS-422/RS-485 transceiver from the iCoupler family, using magnetic coupling to deliver 2500 Vrms isolation across a 16-SOIC package. It supports data rates up to 20 Mbps with 5 ns typical rise/fall times and a maximum propagation delay of 55 ns, making it suitable for high-speed industrial fieldbus links.
20 Mbps data rate — what it buys the bus
At 20 Mbps this part sits in the fast tier of isolated RS-485 transceivers, well above the 500 kbps of the ADM2483BRWZ-REEL sibling. The 5 ns rise/fall times and 55 ns propagation delay keep the eye open for short cable runs (typically under 50 m at full speed) where throughput matters more than reach.
Industrial temperature grade and isolation rating
The 2500 Vrms isolation withstands transient surges common in industrial environments, and the 25 kV/µs common-mode transient immunity ensures data integrity when adjacent power switches commutate. No isolated power is integrated on-chip — an external DC-DC or isolated supply is needed for the bus side.