Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Product List
Selecting the Right ESD Diode Slide 12

For Mobile High-Definition Link (MHL) interfaces, the design criteria is similar to USB2.0. The MHL interface basically shares the same interface connector as USB even though the PHY is different. There is typically a DPDT switch to switch between USB2.0 or MHL. The data rates can be higher when transmitting high definition video (~3 Gbps in 1080p mode). Recent applications are portable systems sharing single USB 2.0/3.0 receptacle to transmit and receive paired signals from multiple locations such as separate audio and video sources. As a high speed signaling scheme, both USB2.0 and MHL are low voltage differential signals that are typically below 3 V. The optimal location for the ESD diodes are directly near the connector before the switch.

PTM Published on: 2014-04-10