RS‐232 connector, RS232 serial communication, rs‐232 cable to USB - tatanh1983/conchodom GitHub Wiki ICL3221 Series 250 kbps 5.5 V RS-232 Transmitter/Receiver - SSOP-16 https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-232/icl3221eiaz-t-renesas-6027777