MAX3485 TTL to RS485 Module – USART Serial Communication

MAX3485 TTL to RS485 Module – Reliable Serial USART Communication

The MAX3485 TTL to RS485 Module is a compact, high-performance serial communication interface board designed for seamless TTL-to-RS485 signal conversion. Whether you're building multi-node industrial networks, connecting microcontrollers to RS485 bus systems, or prototyping embedded systems, this module delivers stable and accurate data transmission with minimal setup.

Key Features

• MAX3485 Chip: Low-power, half-duplex RS485/RS422 transceiver operating at 3.3V – 5V logic levels
• TTL to RS485 Conversion: Directly bridges USART/TTL serial interfaces to RS485 differential bus communication
• Multi-Machine Communication: Supports multi-node (parallel) networking for connecting multiple devices on a single RS485 bus
• High Data Rate: Supports data rates up to 10 Mbps for fast, reliable transmission
• Compact Module Design: Easy to integrate into breadboards, PCB projects, and embedded systems
• Wide Compatibility: Works with Arduino, Raspberry Pi, STM32, ESP32, and other USART-capable microcontrollers
• Onboard Termination & Protection: Built-in fail-safe circuitry for improved signal integrity
• Customizable Quantity: Available in 1PCS, 5PCS, or 10PCS packs to suit your project scale

What's in the Box?

• MAX3485 TTL to RS485 Module (x1 per unit ordered)

Ideal Applications

• Industrial automation and control systems
• Home automation and smart device networking
• Embedded systems and microcontroller projects
• Long-distance serial communication over RS485 bus
• Multi-node sensor and device networks

Specifications

• IC Chip: MAX3485
• Interface: TTL USART / RS485
• Operating Voltage: 3.3V / 5V
• Communication Mode: Half-Duplex
• Max Data Rate: 10 Mbps
• Quantity Options: 1PCS, 5PCS, 10PCS

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Frequently Asked Questions

Q: What does the MAX3485 TTL to RS485 Module do?

A: The MAX3485 module converts TTL-level USART serial signals to RS485 differential signals, enabling reliable long-distance and multi-node serial communication between microcontrollers and RS485-compatible devices or networks.

Q: Is the MAX3485 module compatible with Arduino or Raspberry Pi?

A: Yes! The MAX3485 TTL to RS485 module is fully compatible with Arduino, Raspberry Pi, STM32, ESP32, and any microcontroller with a USART/TTL serial interface operating at 3.3V or 5V logic levels.

Q: How many devices can be connected using the RS485 bus with this module?

A: RS485 supports multi-node (multi-machine parallel) communication, allowing up to 32 driver/receiver nodes on a single bus — making this module ideal for building scalable networked systems.

Q: What quantity options are available?

A: You can choose from 1PCS, 5PCS, or 10PCS packs depending on your project requirements. Each unit comes as one MAX3485 module.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.