SLLU149E June 2011 – February 2016 TUSB7320 , TUSB7340
If more protection is required then the TPD2EUSB30 can be used, the device meets or exceeds IEC61000-4-2 (Level 4) requirements. This device can be used on any of the differential pairs and can be placed on a single layer and causes no signal distortion due to layout mismatch. Place the device as close as possible to the signal pins of the connector. Refer to the datasheet for more information regarding this device.
More information can be found at: http://focus.ti.com/docs/prod/folders/print/tpd2eusb30.html