PowerWise® Design University

Overview of RS-232 and RS-485 serial communications


Overview: In this presentation we will briefly discuss popular serial interface standards, review common RS-232 and RS-485 specifications, the benefits and disadvantages of RS-232 and RS-485 interface standards, typical RS-232 and RS-485 applications, and sources of ESD-related problems in RS-232 and RS-485 circuits and how to avoid them.

After this seminar you should understand the basic operation of the RS-232 and RS-485 communications and be able to successfully use them in your circuit designs.

Length: 60 minutes

Published Date: June 2003

Topics covered in this online seminar include:

  • Overview of Serial Interface Communications
  • Benefits and Disadvantages of RS-232 and RS-485 Communications
  • Typical RS-232 and RS-485 Applications
  • Understanding the Effects of ESD on Interface Communications

Presenter: Hensen Wong is an Applications Engineer with National Semiconductor's Standard Analog Products Group in Santa Clara, California.

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