DisplayPort ESD Protection

VESA (Video Electronic Standard Association) has set forth DisplayPort as the new license-free digital interface standard used primarily between a computer and its display(s) or a computer and a home theater system. The DisplayPort consists of a main link, auxiliary channel and a hot plug detect. The DisplayPort connector supports 1 to 4 data pairs as the main link. These data pairs are referred to as lanes in the DisplayPort Specification.

The DisplayPort connector is an external port that is exposed to the user. All these exposed signal pairs are vulnerable to electrostatic discharge (ESD) either directly from a user or from plugging a charged cable into the port. In order to ensure the functionality of this port, the DisplayPort needs to be ESD hardened to the IEC61000-4-2 ESD standard as indicated in the DisplayPort Specification. A level 4 discharge would require withstanding a ±15kV air and ±8kV contact discharge. In order to meet this stringent DisplayPort ESD protection standard, external protection devices are required at the port entrance.

Due to the high-speed nature of the DisplayPort main link, choosing the appropriate DisplayPort ESD protection device is crucial to maintain signal integrity on both the transmitter (source) and receiver (sink) side of the system. The application note linked below will provide you with more information and solutions for optimal DisplayPort ESD Protection.

Download our "DisplayPort Protection" application note

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