need to make RS232 with two option:
- Voltage level +/-5v (Standard )
- Voltage level 0-5 (TTL )
I would like to control the mode by Software
Do you have any solution/ application?
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Eli,
A RS232 receiver will accept both voltage levels, but the load is 5k to ground.
For the RS232 transmitter, I suggest a relay to switch between the RS232 output and a TTL bus driver output.