Ports and Interfaces > General Discussion

Most Robust Interface?

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rjbosworth:
If interfacing with a computer (through USB or RS), which interface is the most robust in respect to ESD and EMI? Then of the two, which text books are recommended for designing a small PCB to be highly robust, if any outside of the USB Complete or Serial Port Complete?

Jan Axelson:
RS-485 is designed for industrial use over longer distances, while USB was designed as a desktop bus for PC peripherals.

Providers of RS-485 interface chips have many application notes dealing with circuit design and noise. Try Maxim and TI. Also see:

http://janaxelson.com/serport.htm#articles

rjbosworth:
Thank you very much.

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