Quote Originally Posted by Bruce View Post
The USART TX pin idles high, so a simple inverter circuit should be all you need to hold the RF transmitters data in pin low during idle periods.

Attachment 4465
Bruce, is it possible you can draw me a quick circuit I can use on Rx side as well. I have C8050 & C8550, one of them is PNP & the other is NPN, which I can imagine could be used for the above purposes.
My Rx does stay Idle LOW and when data comes the voltage goes high on the data pin. Thanks