TTL Converter Series - RS-422 / RS-232 to TTL Conversion Made Simple
RS-232 to TTL converters make easy connections between your TTL equipment and RS-232 ports. All TTL converter models convert two channels in each direction from TTL to RS-232 or RS-422.
Model 232LPTTL is a port-powered version with DB9 connectors. Model 422TTL is an RS-422 to TTL converter that requires +12 VDC and has DB25 connectors. Model 232TTL requires +12 VDC and has DB25 connectors