MAX485 RS485 to TTL Transceiver Module 5V for Arduino

Add RS485 serial communication to your Arduino or other 5V microcontroller project. This MAX485 module connects a UART interface to an RS485 bus for communication between devices.

TECHNICAL SPECIFICATIONS

• Transceiver: MAX485
• Supply: 5V DC
• Logic level: 5V
• Communication: half duplex (transmit or receive at a time)
• Maximum chip data rate: 2.5Mbps; practical speed depends on cable length and wiring
• Direction control: RE and DE pins

PIN CONNECTIONS

• VCC / GND: 5V supply / ground
• DI: driver input; connect to controller TX
• RO: receiver output; connect to controller RX
• RE: receiver enable, active LOW
• DE: driver enable, active HIGH
• A / B: non-inverting / inverting RS485 bus connections

COMPATIBILITY AND SETUP

Designed for 5V logic. Use suitable level shifting before connecting the receiver output to a 3.3V-only input, such as on an ESP32 or Raspberry Pi. Your controller must manage transmit/receive direction using RE and DE.

PACKAGE CONTENTS

1 x MAX485 RS485 transceiver module.