16 Mbps half-duplex transceiver for RS-485/RS-422 links
The Analog Devices MAX3078EASA+ is a single-channel half-duplex transceiver for RS-485 and RS-422 communication buses. It handles data rates up to 16 Mbps, making it a fit for high-speed industrial networks, motor drives, and building automation where the bus needs to keep up with fast sensor polling or control loops.
3.3 V supply — not a 5 V part
Supply range is 3 V to 3.6 V, so this transceiver runs from a 3.3 V rail. If your existing bus transceivers are 5 V, this part won't plug in without a level translator or a separate supply. The narrow window means the rail needs to stay clean — a switching regulator with 100 mV ripple eats into the margin. For new 3.3 V-only designs, the MAX3078EASA+ avoids the extra regulator a 5 V transceiver would need.
Active production, ROHS3, tube packaging
For reel quantities, check the alternate ordering code (MAX3078EASA+T).
Where it fits on the board
Package is 8-SOIC (3.90 mm width), a common footprint that matches many RS-485 transceivers. Single driver and single receiver — one bus channel. The half-duplex architecture means the driver and receiver share the same bus pair; the MCU controls direction via the DE and RE pins.