USB Hubs

TUSB8041-Q1

TUSB8041-Q1 - 4-Port USB 3.0 Hub 5Gbps AEC-Q100 | Texas Instruments

The Texas Instruments TUSB8041-Q1 is an automotive-grade, four-port SuperSpeed USB 3.0 hub controller delivering 5-Gbps data rates on the upstream port and supporting SuperSpeed, high-speed, full-speed, and low-speed connections on downstream ports. It is available in a 64-pin HTQFP (10x10 mm) package and operates over the AEC-Q1 qualified temperature range of -40C to +85C. A USB 3.0 hub controller is an interface IC that fans out a single upstream USB link into multiple downstream ports, negotiating both SuperSpeed (5 Gbps) and USB 2.0 (high/full/low-speed) paths simultaneously. Hubs sit in the USB topology hierarchy between the host controller and end devices, handling enumeration, power management, and transaction translation defined by the USB 3.0 specification. Key features include simultaneous SuperSpeed and high-speed/full-speed operation on the upstream port, per-port or ganged power switching with overcurrent protection support, operation as a USB 3.0 or USB 2.0 compound device, and flexible configuration via GPIO, I2C, or SMBus interfaces. The automotive qualification (AEC-Q100) makes it suitable for in-vehicle infotainment, telematics, and ADAS platforms where extended temperature and quality requirements apply. Architecturally, the TUSB8041-Q1 integrates the USB 3.0 hub repeater, SuperSpeed PHYs, and USB 2.0 transceivers in a single device, minimizing external component count. Configuration of VID/PID, port mapping, and power-switching behavior can be managed through SMBus or external EEPROM via the I2C interface, enabling customization without firmware development. Typical applications include automotive head units and infotainment hubs, telematics gateways, ADAS camera and sensor modules using USB connectivity, USB docking ports in industrial PCs, and developer carrier boards such as embedded SoM platforms. The four-port capability allows one upstream USB 3.0 connector to serve multiple peripherals. When designing, provide a stable 24 MHz reference clock or use the integrated oscillator option, and ensure per-port power switches are rated for the inrush requirements of attached USB 3.0 devices. At 5 Gbps, keep the SuperSpeed differential pairs length-matched with controlled impedance; according to TI datasheet guidance, unused downstream ports should be terminated per the datasheet recommendation for signal integrity.