ICL3221 Series 250 kbps 15 kV RS232 5.5V Transmitter/Receiver - TSSOP-16, RS 232 pinout, USB RS 232, USB Full Speed, RS 232 converter, RS 232 to USB adapter, USB Full Speed Signal Interface, RS-232 Transceiver https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-232/icl3221eivz-t-renesas-9034756