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24 Nov 2017, 14:52

Reference Design of Digilent Pmod RS232

This is a reference design of Digilent Pmod RS232(RS Part Number:  134-6444). The Digilent Pmod RS232 was converted into DesignSpark PCB format. Download link to the project files and the article of Digilent Pmod RS232 can be found at the end.

The Digilent Pmod RS232 (Revision B) converts between digital logic voltage levels to RS232 voltage levels. The RS232 module is configured as a data communications equipment (DCE) device. It connects to data terminal equipment (DTE) devices, such as the serial port on a PC, using a straight-through cable.

  • Standard RS232 DB9 connector
  • Optional RTS and CTS handshaking functions

Schematic of Digilent Pmod RS232

PCB layout of Digilent Pmod RS232

3D view of Digilent Pmod RS232


BOM list of the board (Key Components):

RS Part Number

Manufacturer Part Number





Texas Instruments

Dual Line Transceiver



RS Pro

2 Pin Header


DB9 Female Right Angle Connector   


DB9 connector


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I am an Electronic Engineering student studying in Hong Kong University of Science and Technology. I am interested in design PCB board.

24 Nov 2017, 14:52


March 29, 2018 08:43

I send a question in the community to get help with the pinout of this module. It doesn't match the Pmod HAT for raspberry

0 Votes