DB-25 Pinout, Asynchronous EIA-422

EIA-422 Boards with DB-25 cable conncectors

The wiring diagram for an EIA-422 DB-25 connector is shown in Table 1.

Table 1:  EIA-422 DB-25 connector

DB-25	Direction	Signal
2		TxD+
14		TxD-
3		RxD+
16		RxD-
4		RTS+
19		RTS-
5		CTS+
13		CTS-
Shell		GND