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Reference Design of Digilent Pmod RS485

This is a reference design of Digilent Pmod RS485 RS Part Number: (134-6474). The Digilent Pmod RS485 was converted into DesignSpark PCB format. Download link to the project files and the article of Digilent Pmod RS485 can be found at the end of this article.

The Digilent Pmod RS485 (Revision B) provides signal and power isolation for high-speed communication lines utilizing the RS-485 communication protocol.

  • High-speed RS-485 communication module
  • Isolated RS-485/RS-422 interfaces for use in noisy environments
  • 16Mbps maximum data rate
  • Connect up to 256 nodes on one bus
  • Differential half or full-duplex communication
  • Thermal shutdown and ±15kV ESD protection


Schematic of Digilent Pmod RS485


PCB layout of Digilent Pmod RS485


3D view of Digilent Pmod RS485

BOM list of the board (Key Components):

RS Part Number

Manufacturer Part Number





Analog Devices

Line Transceiver



TE Connectivity

2 Pin PCB Terminal Block



RS Pro

2 Pin Header

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DesignSpark PCB is an award-winning software package for schematic capture and PCB layout, available for FREE from RS Components. Our software is easy to learn and use yet surprisingly powerful. DesignSpark PCB is now widely adopted in the industry as a standard format for design file sharing and collaboration. This is especially useful in the prototyping phase where most of the innovation takes place. Not yet a DesignSpark PCB user? 

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