Raha tsy voatanisa ny toerana misy anao dia safidio ny iray amin'ireto manaraka ireto:
Renesas Electronics America Inc.
IC TXRX SGL RS232 3-5.5V 16TSSOP.
STMicroelectronics
IC TRANSCEIVER 5.5V RS232 28TSSO.
IC TXRX 3/5 RS232 FULL 28TSSOP.