MAX485 TTL to RS-485 Converter Module
Long-Distance, Industrial-Grade Serial Communication for Microcontrollers
Expand your project's communication range with the MAX485 TTL to RS-485 Converter Module. Designed for robust half-duplex differential data transmission, this module converts standard microcontroller UART TTL serial signals (RX/TX) into noise-immune RS-485 signals. It enables microcontrollers to transmit data over extreme distances—up to 1,200 meters (4,000 feet)—making it ideal for industrial control, building automation, and long-range sensor networks.
Equipped with an onboard 2-pin screw terminal block for RS-485 differential lines (A and B), standard 2.54mm header pins for logic wiring, and integrated directional control inputs (DE/RE), the MAX485 effortlessly connects Arduino, ESP32, STM32, and Raspberry Pi boards to industrial Modbus systems and multi-drop RS-485 networks.
Long-Distance Transmission: Extends serial communication up to $1,200 meters using twisted-pair wiring.
Differential Signal Immunity: High noise rejection protects serial data against electromagnetic interference (EMI) in harsh environments.
Multi-Drop Networking: Supports bus topology allowing up to 32 transceivers connected on a single RS-485 network line.
Easy Terminal Connections: Onboard 5.08mm pitch screw terminal for simple A and B differential line wiring.
Specifications:
Operating Voltage: 5.0V DC
Transceiver Chipset: Maxim MAX485
Data Rate: Up to 2.5 Mbps
Max Distance: Up to 1200 meters (at reduced baud rates)
Interface Pins: VCC, GND, RO (Receiver Out), RE (Receiver Enable), DE (Driver Enable), DI (Driver In)
Line Terminals: Screw terminal block for A + and B - differential data lines