RLC-1 RS232 Level Converter in a DB9 backshell
The RLC-1 RS232 to 3-Volt or 5-Volt (CMOS/TTL) Level converter provides a simple, low-cost and easy to use solution to interfacing a CMOS or TTL based ...
A MIDI to RS232 adapter
Some alternative designs for an RS232-to-MIDI converter that I have seen extract power from ... Other notes (loosely related to the MIDI-RS232 converter) ...
RS232 to TTL Converter Cables
These Converter cables provide two way RS232 serial communications signal conversion between the OOPic TTL output RS232 serial COM port with handshaking.