UART 3.2v Full to 5v Half Duplex Interface

Thread Starter


Joined Jan 7, 2016
Greetings All,

I am trying to connect a 3.2 volt Full Duplex UART to a 5 volt Half Duplex device. The pins on the 3.2 volt device are not 5 volt tolerant (it is a Beaglebone Black). Would a device like this work: . It is an RS-485 transceiver breakout board. It appears it will address the full to half duplex conversion (I have additional pins from the BBB available to toggle between send and receive), I'm just not sure if it will protect the BBB from the 5V while it is receiving. I'm trying to avoid having to use an additional board for level conversion. Any help greatly appreciated.