TTL-RS485 Serial Converter Card - MAX485

RS485 to TTL Serial Level Signal Converter Module MAX485 converts TTL signal to RS485 for long range, high data rate error prone differential communication. Digital communication networks implementing the EIA-485 standard can be used effectively over long distances and in electrically noisy environments. Multiple receivers can be connected to such a network in a linear, multi-drop configuration. These features make these types of networks useful in industrial environments and similar applications.

 

The modules operate from a standard 5V power supply, allowing them to be interfaced to hardware serial ports of microcontrollers such as Arduino/PIC. They use logical levels. The direction of communication can be controlled with just one digital pin. It is also possible to connect multiple modules together for communication between 2 or more Arduinos. For larger distances, two modules can be configured as repeaters.