TUSB2046BIRHBT is a 4-port USB 2.0 full-speed hub controller launched by Texas Instruments. It adopts a 32-pin VQFN surface mount packaging. This device provides one upstream port and four downstream ports, fully meeting the requirements of the USB specification as a full-speed hub.
Since this device is implemented using a digital state machine instead of a microcontroller, no firmware programming is required and it can be plug-and-play. All upstream and downstream ports are equipped with fully compliant USB transceivers. The downstream ports support full-speed and low-speed devices by automatically setting the conversion rate.
Main performance parameters: Data rate 12Mbps, Operating voltage range 3V to 3.6V, Operating current 40mA. Supports two power supply modes: self-powered mode and bus-powered mode. Power switching and overcurrent detection can be configured as global mode (联动 all ports) or port-independent mode.
This device supports suspend and resume operations. Custom Vendor ID and Product ID can be configured through an external serial EEPROM. The PWRON output adopts a push-pull structure and does not require an external pull-up resistor; the OVRCUR input has a noise filtering function, enhancing the anti-interference ability against voltage spikes. The clock input can select a 6MHz crystal oscillator or an 48MHz external clock. When using a 6MHz crystal oscillator, low EMI emission can be achieved.
This device operates within a temperature range of -40°C to +85°C and is suitable for industrial applications. No special driver is required and it can seamlessly integrate with any operating system that supports the USB protocol stack.
Features ：
• Product Type: USB Hub Controller, 4 ports, 1 upstream port + 4 downstream ports
• USB standard: USB 2.0, full-speed mode 12Mbps
• Operating voltage: 3V to 3.6V, operating current: 40mA
• Core feature: Digital state machine implementation, no need for firmware programming, plug-and-play
• Transceiver: Integrated USB transceiver, supporting automatic identification of full-speed and low-speed devices
• Power mode: Self-powered mode / Bus-powered mode
• Overcurrent protection: Global mode or independent port mode is selectable.
• EEPROM interface: 3-state interface, supports custom VID/PID, allows EEPROM sharing
• PWRON output: Push-pull output, no need for external pull-up resistor
• OVRCUR Input: Built-in noise filtering, anti-voltage spikes
• Clock input: 6 MHz crystal oscillator (low EMI) or 48 MHz external clock
• Operating temperature range: -40°C to +85°C (industrial grade)
• Compact package: VQFN-32 (RHB), size 5mm × 5mm, pin pitch 0.5mm
• MSL Level: 2 - 260C - 1 YEAR
• Environmental compliance: Meets RoHS standards, with NiPdAu plating on pins
Application：
• PC motherboard / laptop: Number of extended USB interfaces
• USB Hub/Expansion Dock: Independent USB Hub Device
• Industrial control equipment: Provides USB interface expansion for industrial computers and PLCs
• Embedded system: Adding a USB downstream port to the embedded platform
• Game consoles / Consumer electronics: Peripheral interface expansion
• Automotive Electronics: Vehicle Information Entertainment System USB Interface (Supports Industrial Temperature Range)
