The SN75240PWR is a 8-pin 6V SN x 52 x 0 USB Port Transient Suppressor provides electrical noise transient protection to Universal Serial Bus (USB) low and full-speed ports. The SN75240 device is quadruple, unidirectional transient voltage suppressor (TVS). The input capacitance of 35 pF makes it unsuitable for high-speed USB 2.0 applications. Any cabled I/O can be subjected to electrical noise transients from various sources. This noise transient can cause damage to the USB transceiver and/or the USB ASIC if it is of sufficient magnitude and duration. This device is measured at the system level, according to IEC61000-4-2. However system design impacts the results of these tests. To accomplish a high compliance level requires careful board design and layout techniques.