USB 2.0 hub controller — active, no LTB risk
The Infineon CY7C65642-28LTXC is a USB 2.0 hub controller from the TetraHub series, designed for self-powered or bus-powered hub applications in desktop, docking station, and consumer electronics where multiple USB 2.0 downstream ports are needed. It integrates the hub repeater, transaction translator, and port power management logic in a single 28-pin QFN package. The supply range spans 3.15V to 5.25V, which covers both 3.3V and 5V USB VBUS rails — useful for designs that need to run the controller directly off the bus voltage without an extra regulator. It is not rated for industrial or automotive under-hood use.
28-QFN footprint — exposed pad needs via stitching
The CY7C65642-28LTXC comes in a 28-WFQFN with exposed pad (5x5 mm body). Without proper thermal management, the part may exceed its rated temperature range in a multi-port hub drawing several hundred milliamps.
Active lifecycle — no end-of-life concern for new builds
No official successor part has been announced.