mlab mlab-module bus-converter rs485 ttl mlab-comm mlab-serial uart-rs485


The TTLRS48501A is a versatile TTL to RS485 converter module with jumper-configurable terminator support for enhanced compatibility.

This is an open-source hardware design, one of the modules from the MLAB labolatory system.

TTLRS48501A - TTL to RS485 Converter


The TTLRS48501A is a module that serves as a converter between TTL (Transistor-Transistor Logic) and RS485 communication standards. This module is designed to be flexible and compatible with various types of converters, such as MAX485, SN75176A, and others. The module also includes the option to connect a terminator using a jumper.


Possible Applications

The TTLRS48501A is ideal for various applications where there is a need to convert TTL signals to RS485 and vice versa. Some of the possible applications include:

  • Industrial control
  • Home automation
  • Remote sensor networks
  • Communication between microcontrollers for long distance or in harash environment


The TTLRS48501A module is designed to be as universal as possible. This allows it to be used with various types of converters. A jumper is provided on the module for connecting a terminator.