In a USB 2.0 application, the over voltage protection can be provided using a 5 V low capacitance TVS diode such as the CDSOD323-T05C or a 0.5 pF ESD suppressor such as the CG0603MLC-05LE. Alternatively, the use of a Steering diode array with the CDSOT23-SR208 is another possible solution using a “rail-to-rail” clamp technique to the V_CC rail and ground. To meet the USB 2.0 over-current protection requirements for self-powered hubs and hosts, the use of a Bourns® Multifuse® PPTC resettable fuse such as the MF-MSMD110 or MF-MSMF110 would be an ideal solution. In this example, when the PPTC resettable fuse trips on over-current, it removes or reduces the current to all the affected downstream facing ports. IEEE has published a serial bus standard called the IEEE 1394A that supports up to 400 Mbps and IEEE 1394B that supports higher data rates up to 800 Mbps. These standards also allow for synchronous data transfer that guarantees the bits per second rate. This is important in applications where streaming (real time) video is used or high volume data transfer is required. IEEE 1394 has also been designed to support up to sixty three external devices from one port. Similar overcurrent and overvoltage protection to that just discussed for USB port applications can also be applied here. Overvoltage protection can be provided using a 5 V low capacitance TVS diode such as the CDSOD323-T05C, a 0.5 pF ESD suppressor such as the CG0603MLC-05LE, or a Steering diode array with the CDSOT23-SR208 using a “rail-to-rail” clamp technique to the V_CC and ground rails.