MAX3485 3.3V TTL-to-RS485 Transceiver Module

Add an RS-485 physical-layer connection to a compatible serial project with this MAX3485 transceiver module. It converts between TTL-level serial signals and an RS-485 bus.

Serial bus interfacing for embedded systems

• ✅ Extend serial communication to a bus — RS-485 supports linking devices over a shared communication line.
• ✅ Control transmit and receive direction — the board exposes serial and direction-control pins.
• ✅ Fit common prototyping wiring — the module uses a 2.54mm-pitch pin header.

Use the board when a controller’s serial interface needs to communicate with compatible RS-485 equipment. Multiple devices can share a bus when configured with suitable addressing and wiring.

The module is specified for 3.0–3.6V operation. Communication distance depends on cabling, termination, topology and connected equipment; check the complete system design rather than relying on a single maximum-distance claim.

Specifications: MAX3485 transceiver; 3.0–3.6V supply; TTL serial and RS-485 interface; transmit/receive direction pins; 2.54mm pin header; board size 19.3 × 13.3mm.

Add the module to a compatible 3.3V serial communication design.