RS232C / RS422 / RS485

Specification	RS232C	RS423	RS422	RS485
동작 모드	Single-Ended	Single-Ended	Differential	Differential
최대 Driver/Receiver 수	1 Driver 1 Receiver	1 Driver 10 Receivers	1 Driver 32 Receivers	32 Drivers 32 Receivers
최대 통달거리	약 15 m	약 1.2 km	약 1.2 km	약 1.2 km
최고 통신속도	20 Kb/s	100 Kb/s	10 Mb/s	10 Mb/s
지원 전송방식	Full Duplex	Full Duplex	Full Duplex	Half Duplex
최대 출력전압	±25V	±6V	-0.25V to +6V	-7V to +12V
최대 입력전압	±15V	±12V	-7V to +7V	-7V to +12V