EMC Question of the Week: February 10, 2020

USB and HDMI Connectors

HDMI, USB, LVDS, CAN and RS-485 are all communications interfaces that employ

  1. single-point grounds
  2. ring topologies
  3. coaxial cables
  4. differential signaling


The correct answer is "d". Each of these communication interfaces employ differential signaling as opposed to single-ended signaling. You don't have to be familiar with all of the interfaces to answer this question correctly. None of the interfaces listed employ single-point grounds, ring topologies or coaxial cables.

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