Overview
The TUSB2046BVFR is a 4-port USB 2.0 full-speed hub device manufactured by Texas Instruments. It is a 3.3-V CMOS hub that complies with the Universal Serial Bus (USB) specification, providing one upstream port and four downstream ports. This device is implemented with a digital state machine, eliminating the need for firmware programming. Integrated USB transceivers ensure full compliance with USB standards for all ports.
The TUSB2046BVFR is available in a 32-pin LQFP (VF) package and supports both bus-powered and self-powered modes. It features low power consumption, enhanced system ESD performance, and does not require special drivers, making it compatible with any operating system that supports USB stack.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 3 | 3.3 | 3.6 | V |
| VI Input Voltage, TTL/LVCMOS | 0 | - | VCC | V |
| VO Output Voltage, TTL/LVCMOS | 0 | - | VCC | V |
| TA Operating Free-Air Temperature | 0 | - | 70 | °C |
| f(OPRH) Operating Frequency, High Speed Mode | - | - | 12 Mb/s | - |
| f(OPRL) Operating Frequency, Low Speed Mode | - | - | 1.5 Mb/s | - |
| Package Type | - | - | LQFP (VF) 32 pins | - |
| Package Size | - | - | 7.00 mm × 7.00 mm | - |
Key Features
- Fully compliant with the USB specification as a full-speed hub.
- 32-pin LQFP package with a 0.8-mm terminal pitch.
- 3.3-V low-power ASIC logic.
- Integrated USB transceivers for all upstream and downstream ports.
- No firmware programming required due to digital state machine implementation.
- One upstream port and four downstream ports supporting full-speed and low-speed operations.
- Supports bus-powered and self-powered modes.
- Power switching and overcurrent reporting provided ganged or per port.
- Supports suspend and resume operations.
- Programmable vendor ID and product ID with external serial EEPROM.
- 3-state EEPROM interface allows EEPROM sharing.
- Push-pull outputs for PWRON eliminate the need for external pullup resistors.
- Noise filtering on OVRCUR provides immunity to voltage spikes.
- Low EMI emission achieved by a 6-MHz crystal input.
- Supports 6-MHz or 48-MHz clock operation.
- Enhanced system ESD performance.
- No special driver requirements; works seamlessly with any operating system with USB stack support.
Applications
- Computer Systems
- Docking Stations
- Other USB-based peripherals and hubs requiring multiple downstream ports.
Q & A
- What is the TUSB2046BVFR?
The TUSB2046BVFR is a 4-port USB 2.0 full-speed hub device manufactured by Texas Instruments.
- What package type does the TUSB2046BVFR come in?
The TUSB2046BVFR comes in a 32-pin LQFP (VF) package.
- What are the operating temperature ranges for the TUSB2046BVFR?
The operating temperature range is 0°C to 70°C for the TUSB2046B and –40°C to 85°C for the TUSB2046BI.
- Does the TUSB2046BVFR require firmware programming?
No, the TUSB2046BVFR does not require firmware programming due to its digital state machine implementation.
- What are the power management modes supported by the TUSB2046BVFR?
The TUSB2046BVFR supports both bus-powered and self-powered modes, with configurable power switching and overcurrent detection on a per-port or ganged basis.
- What clock frequencies does the TUSB2046BVFR support?
The TUSB2046BVFR supports both 6-MHz and 48-MHz clock frequencies.
- Does the TUSB2046BVFR require special drivers?
No, the TUSB2046BVFR does not require special drivers and works seamlessly with any operating system that supports USB stack.
- What is the maximum current each downstream port can provide in bus-powered mode?
In bus-powered mode, each downstream port can provide a maximum of 100 mA of current.
- What is the maximum current each downstream port can provide in self-powered mode?
In self-powered mode, each downstream port can provide a maximum of 500 mA of current.
- How does the TUSB2046BVFR handle overcurrent conditions?
The TUSB2046BVFR handles overcurrent conditions through configurable power switching and overcurrent detection on a per-port or ganged basis.
- What are some common applications for the TUSB2046BVFR?
