MAX490 RS422 to TTL Converter Module – Full Duplex Bidirectional

Upgrade your serial communication setup with this MAX490 RS422 to TTL Converter Module. Built around the reliable MAX490 chip, this compact module enables seamless, full duplex bidirectional data transmission between RS422 and TTL logic levels — making it an essential component for engineers, hobbyists, and electronics developers working with microcontrollers, PLCs, industrial sensors, and more.

Key Features

Full Duplex Bidirectional Communication: Simultaneous send and receive data streams with no switching delay.
RS422 to TTL Conversion: Bridges the gap between RS422 differential signaling and standard 5V TTL logic levels with high accuracy.
MAX490 IC: Industry-proven transceiver chip for stable, noise-resistant long-distance data transmission.
SMD Construction: Surface-mount design keeps the board compact and lightweight for easy integration into existing projects.
5V Logic Level Support: Fully compatible with most common microcontrollers and development boards (Arduino, Raspberry Pi, etc.).
Wide Compatibility: Works with industrial automation, robotics, motor controllers, and serial communication systems.
Available in Multiple Pack Sizes: Choose from 1PCS, 5PCS, or 10PCS to suit your project needs.

Specifications

Interface Standard: RS422 / TTL
Communication Mode: Full Duplex, Bidirectional
Logic Level: 5V TTL
PCB Type: SMD (Surface Mount Device)
Pack Options: 1PCS, 5PCS, 10PCS

What's in the Box?

MAX490 RS422 to TTL Converter Module(s) (quantity per selected option)

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Frequently Asked Questions

Q: What does the MAX490 RS422 to TTL Converter Module do?

A: The MAX490 RS422 to TTL Converter Module translates signals between RS422 differential and TTL (5V) logic levels, enabling full duplex bidirectional serial communication between devices that use different interface standards. It is ideal for connecting industrial equipment, sensors, microcontrollers, and PLCs that require RS422 communication.

Q: Is this module compatible with Arduino or Raspberry Pi?

A: Yes. The module operates on 5V TTL logic levels, making it fully compatible with popular development platforms including Arduino, Raspberry Pi, and most standard microcontroller boards. Simply connect the TTL side to your microcontroller's serial pins and the RS422 side to your RS422 device.

Q: What is the difference between full duplex and half duplex for this converter?

A: Full duplex communication, as supported by this MAX490 module, allows data to be sent and received simultaneously on separate channels, reducing latency and improving throughput. Half duplex would require the line to switch direction between sending and receiving. This module's full duplex design makes it suitable for time-sensitive or high-speed serial applications.

Q: How many units should I order?

A: This module is available in packs of 1, 5, or 10 pieces. Single units are great for prototyping or one-off projects, while multi-packs offer better value for larger builds, classroom setups, or keeping spares on hand.

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.