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PC serial (25 pin) pinout

serial interface

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Very common PC serial port.

Pin Name Dir Description
1SHIELD-Shield Ground
2TXD-->Transmit Data
3RXD<--Receive Data
4RTS-->Request to Send
5CTS<--Clear to Send
6DSR<--Data Set Ready
7GND-System Ground
8CD<--Carrier Detect
9n/c- 
10n/c- 
11n/c- 
12n/c- 
13n/c- 
14n/c- 
15n/c- 
16n/c- 
17n/c- 
18n/c- 
19n/c- 
20DTR-->Data Terminal Ready
21n/c- 
22RI<--Ring Indicator
23n/c- 
24n/c- 
25n/c- 

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Pinouts.ru > RS-232 and other serial ports and interfaces pinouts listing > Pinout of PC serial (25 pin) and layout of 25 pin D-SUB male connector
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