CH334P 4-Port USB 2.0 Hub Controller (Crystal-less, QFN-16)

Expand your system's connectivity effortlessly with the CH334P high-performance 4-port USB 2.0 Hub controller. Designed for space-constrained embedded systems, this highly integrated IC allows you to split a single USB port into four independent USB 2.0 interfaces. It is an invaluable component for custom drone payloads, where a companion computer (like a Raspberry Pi or Compute Module) needs to interface simultaneously with multiple USB devices such as flight controllers, cameras, telemetry radios, and LiDAR sensors.

What sets the CH334P apart is its crystal-less design—it features a built-in oscillator and PLL, completely eliminating the need for an external crystal. Combined with integrated pull-up and pull-down resistors, it drastically reduces your Bill of Materials (BOM) and saves precious PCB real estate. Packaged in an ultra-compact QFN-16 footprint, it delivers robust, high-speed (480 Mbps) USB expansion for professional DIY electronics, custom keyboards, and robotics.

Key Features:

• Crystal-less Architecture: Features a built-in 12MHz oscillator, removing the need for a bulky external crystal and simplifying PCB routing.

• 4-Port Expansion: Converts one upstream USB 2.0 port into four downstream ports, all supporting High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) transfers.

• High Integration: Includes internal LDOs and necessary USB termination resistors, requiring minimal external components.

• Ultra-Compact: The tiny QFN-16 package is perfect for lightweight, densely populated boards in FPV drones and IoT devices.

Specifications:

• Part Number: CH334P

• IC Type: 4-Port USB 2.0 Hub Controller

• Transfer Rates: Up to 480 Mbps (High-Speed)

• Oscillator: Internal (No external crystal required)

• Package Type: QFN-16 (SMD/SMT)