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RS-423 (EIA-423) is another standard used in point to point
communications. RS-423 data transmission uses an unbalanced
line driver that connects to an RS-422 type balanced line
receiver as shown in Figure B.1. The RS-423 line driver is
unique to this system. It produces voltage similar to RS-232
but has a slew rate control input that is used to limit rise
times and cross talk on the data lines. Typical adjustment
on the slew rate control is from 1 to 100 µs. This is done
by the proper selection of one resistor on the wave shape
control input.
Figure B.1 RS-423 Interface Circuit
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