ESD Protection of USB 2.0 Interfaces

Two decades ago, communication between a host computer and other devices was a complex and difficult task. The Universal Serial Bus (USB) was developed by a group of companies in 1994 to replace the multiple slow buses with a single bus that could exchange data between the host system and the peripherals. Following its release, USB quickly became very popular due to its ease of use and fast data transfer rate. Fast forward a little over two decades, all consumer electronic devices now come with integrated USB interfaces. The USB interface has evolved a lot to support modern demands of very high speed communication with host devices and their innovative features. Since its introduction, the USB specification has progressed as USB1.1, USB 2.0, USB 3.0, USB 3.1, USB 3.2 (Gen 1, Gen 2, Gen 2x2), USB Type-C supporting Thunderbolt, HDMI and DisplayPort via special modes, and finally, towards USB 4.

ESD Protection of USB Type-C Interfaces

Imagine this common scenario: not having a spare Universal Serial Bus (USB) port on your computer. All your personal devices are connected. On most days, I carry a mobile phone, smart watch, wireless headset, and a Wi-Fi adapter – all of which can only be charged via a USB port. When I need to back up files on my computer, I often use a USB flash drive. When charging devices in the car, I use standard USB ports. USB is everywhere! It is so ingrained into our daily lives that it is a part of our every digital experience.

Part Two: ESD Protection of OBD-II Systems

This is the second blog in a two-part series about ESD protection of OBD-II ports. Read the first part here.

Part One: OBD-II Systems & Protocols

Think about a situation when you ordered merchandise online and you were eagerly expecting this package. Each day you watched through your window for the delivery truck to arrive, but unfortunately, it ended up arriving later than expected. In such a case, you would have benefited from a tracking system via your phone or computer. Then, you could know exactly when your package would arrive. Or think about another situation, when your child is picked up from school by the after-school service provider and you wonder if he or she has reached the destination safely. If there was an option to track the vehicle through your phone during your child’s journey it would be very useful.