DPU1.1S — High-Performance Low-Power 4-Port USB 2.0 High-Speed Hub Controller

The DPU1.1S is a high-performance, low-power 4-port USB 2.0 hub controller.

• Upstream port supports high-speed 480 Mbps and full-speed 12 Mbps

• Four downstream ports support high-speed 480 Mbps, full-speed 12 Mbps, and low-speed 1.5 Mbps

It adopts a state-machine single-transaction architecture with multiple transaction buffers (instead of MCU-based design), achieving minimal system latency and true USB 2.0 high-speed performance with very low hardware overhead. Fabricated on a 0.18 µm CMOS process for excellent drive capability and cost efficiency.

Ideal for USB docking stations, extension cables, PC peripherals, monitors, in-vehicle systems, and set-top boxes.

Key Features

• Fully compliant with USB 2.0 and USB 1.1 specifications

• Supports 480 MHz / 12 MHz / 1.5 MHz operation

• Integrated 1.5 kΩ upstream pull-up and 15 kΩ downstream pull-down resistors

• On-chip 5 V / 3.3 V / 1.8 V regulators

• Built-in 12 MHz crystal startup resistor and capacitor

• Integrated 40× PLL for 480 MHz clock generation

• Optional external EEPROM for customizing VID/PID and other settings

• Lead-free SSOP-28 package