The term "DB9" refers to a common connector type, one of the D-Subminiature or D-Sub types of connectors. The following schematic diagram show the male (grey background) and female (black background) pin numbering for DB-9 connector. DB9 connectors are designed to work with the EIA/TIA 232 serial interface standard, which determined the function of all nine pins as a standard. It is commonly used for serial peripheral devices like keyboards, mice, joysticks, etc.

DB-9 Connector Pinout

Pin Number Signal Name
1
2
3
4
5
6
7
8
9
Data Carrier Detect (DCD)
Received Data (RD)
Transmit data (TD)
Data Terminal Ready (DTR)
Signal Ground (SG)
Data Set Ready (DSR)
Request to Send (RTS)
Clear to Send (CTS)
Ring Indicator (RI)

DB-9 Connector Pinout Null Modem Wiring Diagram

DB-9 Connector Pinout Null Modem Wiring Diagram



Related Post

2004 KTM EXC 250|450|525 Wiring Diagram
Fiat Spider 124 BS Electrical Wiring Diagram (69-73)
LM4570 Datasheet - Motor Driver for Mobile Phones PDAs and Video Game Systems
Sony Play Station 2 PS2 to TV Cable Connection Harness Diagram
Land Rover Defender RHD Windows Wiring Diagram