DB-9 Pinout Asynchronous EIA-232

The wiring diagram for an EIA-232 DB-9 connector is shown in Table 1.

Table 1:  EIA-232 DB-9 connector

DB-9	Direction	Signal
1		DCD
2		RxD
3		TxD
4		DTR
5		SG
6		DSR
7		RTS
8		CTS
9		RI
Shell		GND

NOTES:

• For information regarding the EIA-232/EIA-422/EIA485 specifications, click here.