These high data rates require length-matching and impedance control. Each lane can carry up to 5Gbps or more of data. The lines are differential, providing 4 lanes of digital signals with 2 in each direction. The figure below illustrates these effects on a USB-C cable.Ī USB-C cable has 8 coax or 4 twinax high speed data connections. Cable length also limits application due to power loss and signal attenuation at high data rates. High current applications require thicker gauge copper. Each cable is tailored for its specific application and electronically identified. There is no single standardized USB-C cable. To reach the potential of this interface, you must first understand how the cables and connectors can influence PCB layout requirements. Power delivery in USB-C coexists with SuperSpeed digital data. Accordingly, and considering their prevalence in high-speed digital communications systems, understanding the ins and outs of USB-C is important for creating optimal PCB USB designs. Identifiable by their symmetrical shape and dual layer pinout, these connectors may function quite differently depending on their application. One of the most popular is the USB-C, which was formerly referred to as USB Type C to differentiate it from types A and B. Numerous physical configurations and pin numbers are proof of their wide breadth of applications. USB cables find usage in a variety of electronic systems today.
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