Humungus
Full Member level 6
Hi,
We need to design a RS485 line driver with a process allowing a Vdd max of 5.5V.
The RS485 standard sets possible common modes from -7V to +12V, that is 7V away of each supply rail 0V and 5V.
Does anybody know how to cope with this common mode exceeding the SOA of the process?
Other line driver standards have the same requirement (or similar). Any reference or hint is welcome.
Thanks a lot
We need to design a RS485 line driver with a process allowing a Vdd max of 5.5V.
The RS485 standard sets possible common modes from -7V to +12V, that is 7V away of each supply rail 0V and 5V.
Does anybody know how to cope with this common mode exceeding the SOA of the process?
Other line driver standards have the same requirement (or similar). Any reference or hint is welcome.
Thanks a lot