https://devzone.nordicsemi.com/f/nordic-q-a/90484/rs485-nrf52840The problem I encounter now is that NRF52840 is my MCU, and I need RS485 module to transmit data. The supply voltage of my NRF52840 is 1.8V. Is it recommended that the RS485 chip can recognize the RX TX control pin (1.8V) of NRF52840 and the power supplyen-USTelligent Community 13Thu, 28 Jul 2022 18:41:26 GMThttps://devzone.nordicsemi.com/thread/379188?ContentTypeID=1Thu, 28 Jul 2022 18:41:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b7af7759-393f-4043-b0a2-c4ab13695f28hmolesworth<p>Use a 1.8 volt RS485 chip like one of these, no need for 5V:</p> <p><a href="https://www.digikey.com/en/products/detail/rochester-electronics-llc/ISL32611EFHZ-T/13463943">ISL32611</a></p> <p><a href="https://www.digikey.com/en/products/detail/stmicroelectronics/STR485LVQT/9608551">STR485LV</a></p> <p><a href="https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/MAX14852GWE/5880596">MAX14852</a></p><div style="clear:both;"></div>