RS485 3.3V or 5V IC For Larger Distance

[DBhut.1]

Hello, 

Our application needs longer distance RS485 communication, So, From 3.3V and 5V RS485 IC (available in ST), which to choose for larger distance coverage?

Thank You

[S.Ma]

Quantify larger distance, m, km?

As ADSL, differential pair signaling is better and unrelated to voltage.

Maybe check single pair ethernet using an ethernet pinout compatible transceiver for half duplex mode. Check Click board portfolio from mikroE

[Tesla DeLorean]

4000ft / 1.2KM

https://www.analog.com/media/en/technical-documentation/data-sheets/491fa.pdf

LoS LoRa should be able to get several KM