What this USB 2.0 switch does in the signal path
The NXP NX3DV221GM,115 is a single-channel 2:1 multiplexer/demultiplexer analog switch designed specifically for USB 2.0 high-speed (480 Mbps) signal routing. Its 1 GHz -3dB bandwidth ensures the differential eye diagram stays open, and the 7 Ohm max on-resistance keeps insertion loss low enough that the USB host and device still see valid voltage levels at the far end.
Package and footprint — small, but reworkable
This comes in a 10-XFQFN package (1.55 x 2 mm body, supplier device package 10-XQFN). That is a tiny QFN with exposed pads underneath — no leads to inspect visually. For a rework tech, that means hot-air removal and a stencil for paste application; don't try to hand-solder this one with an iron. Surface-mount only, no through-hole option.
The bi-directional feature means you can swap D+ and D- paths without worrying about direction; the switch is symmetrical.
Lifecycle — active, no EOL worry
NXP lists this part as Active. ROHS3 compliant, so it passes European and most global environmental requirements.