> I'm looking for a single device (meaning...I can do it with a couple of o= pamps,etc) > that will accept a single ended 5V digital input, and give me differentia= l > output....+5/-5 out.=A0 Rail to rail would be nice, but if I need to run = it above 5V > (say 9-12V) for the supply I can do that.=A0 Highest frequency would be a= bout 5KHz > that I would run thru it. >=20 > Ideas? RS422/485 driver chip? CAN driver chip (although it may have a resistor int= ernally between the two lines, and you will need two resistors, one resisto= r to Vcc from one output, and one resistor to gnd on the other output). --=20 Scanned by iCritical. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .