Automotive USB port protection with 18V clamp
The Texas Instruments TPD3S716QDBQRQ1 is a single-circuit automotive USB port protection switch with integrated internal switch technology, rated for 18V clamping and qualified to AEC-Q100. It comes in a 16-SSOP package for surface-mount assembly. This part is designed for automotive applications where a USB port needs overvoltage clamping and switch control in one IC, saving board area versus a discrete TVS + switch solution.
The 18V clamping voltage is the key protection parameter: it limits the USB VBUS or data-line voltage during a fault to 18V, which is within the absolute maximum of most downstream automotive-grade USB transceivers and controllers. If your ECU sees a load-dump transient or a miswired 24V truck battery, the clamp holds the port safe. The single-circuit count means one USB port per package — plan one device per connector.
AEC-Q100 and the 16-SSOP footprint
AEC-Q100 qualification covers the full automotive temperature range and reliability stress flows — this part is production-grade for under-hood or cabin USB ports. The 16-SSOP package is a 3.90 mm wide body, 0.154" pitch, with a standard footprint shared across many TI automotive interface and protection parts. The base product number TPD3S716 groups the family; the QDBQRQ1 suffix specifies the automotive-grade variant in tape-and-reel or cut-tape.