Hi Maarten, Muffinman wrote: > Hello all, > > Does anyone know on the Net5501 what voltage levels both serial ports > use for their outputs/TXD? I'm pretty sure the first serial port uses TI > model 'MAX3243C'. Of the second I'm not sure but I suspect it to be > National model '87366fg r/k1'. Nonetheless, even with this information I > have a hard time interpreting the data in their manuals. > > The main issue is that I need to connect (preferably) the second serial > to a device which is 5 volt tolerant on its input/RXD. Therefore I need > to be sure the Net5501 serial port doesn't fry my precious device I put > the signal into. > > Does anyone have some more information on this?
Both COM1 on P1 and COM2 on JP4 are RS232 levels using a MAX3243 driver, the datasheet says RS232 levels at min 5V, typ 5.4V. But note that COM2 is also available on JP5 at 3.3V CMOS levels, see manual for details. Best Regards, Soren Kristensen CEO & Chief Engineer Soekris Engineering, Inc. _______________________________________________ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
