I’m working on a project that requires several Arduinos communicating with each other via RS422 and each one with other peripherals via RS232.
So far I’ve been using Arduinos MEGA 2560 with MAX489 (for rs422 communication) and MAX232 (for rs232 communication) and it has been working great. But now I need to use an arduino DUE along side with the others MEGA, i.e., communicating via RS422 with arduinos and via RS232 with some periphericals.
The problem I’m facing is with the voltage levels in the TTL communication. In MEGA I have 0 to 5V TTL, while in DUE I have 0 to 3.3V TTL. As far as I have seen in the both ICs datasheets, if I connect DUE to them, I’ll end up frying it.
So, my quetion is: Is there any alternative to these ICs that will work with DUE? Or if there is a configuration on the electronics side that will allow me to use these ICs with DUE?