Try the Maxim web site.  Like the MAX232 they also make a MAX485.  The RS485
protocol allows for multiple nodes on the one bus, a bit like the old
10BASE2 or coax ethernet.  It is common in industrial applications that use
PLC and the likes.  Very handy.

Try http://www.maxim-ic.com and search for max485, you will find lots there.

Mark



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Mark Thorley
Brisbane, Queensland, Australia.

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