Low-cost RS232-to-RS485 Converter

In the November 2003 issue of Elektor Electronics we published
a neat little ‘industrial strength’ RS232-to-RS485 converter suitable
for use with the MSC1210 board (which was published in
the July/August 2003 issue). For a quick test on the bench, a simpler
approach is possible, avoiding the need for the MAX232 and LTC485 ICs.