Overview
The TUSB8020B-Q1, produced by Texas Instruments, is a two-port USB 3.0 compliant hub designed for various applications requiring high-speed USB connectivity. This device supports simultaneous SuperSpeed USB and high-speed/full-speed connections on the upstream port, and it provides SuperSpeed USB, high-speed, full-speed, or low-speed connections on the downstream ports. It is particularly suited for environments where power management and battery charging capabilities are essential.
The TUSB8020B-Q1 is available in a 48-terminal HTQFP package and operates over the industrial temperature range of -40°C to 85°C, making it suitable for automotive, computer systems, docking stations, monitors, and set-top boxes.
Key Specifications
| Parameter | Unit | Min | Nom | Max |
|---|---|---|---|---|
| Steady-state supply voltage (VDD) | V | -0.3 | - | 1.4 |
| Steady-state supply voltage (VDD33) | V | -0.3 | - | 3.8 |
| Storage temperature range (Tstg) | °C | -65 | - | 150 |
| Operating supply voltage (VDD) | V | 0.99 | 1.1 | 1.26 |
| Hub Input Supply Current (Power On, after Reset) at 3.3V | mA | - | - | 5 |
| Hub Input Supply Current (Power On, after Reset) at 1.1V | mA | - | - | 39 |
Key Features
- Two-port USB 3.0 compliant hub with simultaneous SuperSpeed USB and high-speed/full-speed connections on the upstream port.
- Supports SuperSpeed USB, high-speed, full-speed, or low-speed connections on the downstream ports.
- Compliant with USB Battery Charging Specification Revision 1.2 (BC 1.2) and Chinese Telecommunications Industry Standard YD/T 1591-2009.
- Automatic mode (AUTOMODE) for battery charging, supporting divider-mode and DCP mode.
- Power management with per-port or ganged power-enable controls and over-current status inputs.
- Supports on-board and in-system OTP/EEPROM programming via the USB 2.0 upstream port.
- Single clock input with a 24-MHz crystal or oscillator.
- No special driver requirements; works seamlessly on any operating system with USB stack support.
- Provides 128-bit Universally Unique Identifier (UUID).
- Customization options through OTP ROM, I2C EEPROM, or I2C/SMBus slave interface.
Applications
- Automotive systems
- Computer systems
- Docking stations
- Monitors
- Set-top boxes
Q & A
- What is the TUSB8020B-Q1?
The TUSB8020B-Q1 is a two-port USB 3.0 compliant hub produced by Texas Instruments.
- What are the supported USB speeds on the downstream ports?
The downstream ports support SuperSpeed USB, high-speed, full-speed, or low-speed connections.
- Does the TUSB8020B-Q1 support battery charging?
Yes, it supports USB Battery Charging Specification Revision 1.2 (BC 1.2) and Chinese Telecommunications Industry Standard YD/T 1591-2009.
- How is power management handled on the TUSB8020B-Q1?
Power management can be configured for per-port or ganged power-enable controls and over-current status inputs.
- What is the operating temperature range of the TUSB8020B-Q1?
The device operates over the industrial temperature range of -40°C to 85°C.
- Does the TUSB8020B-Q1 require special drivers?
No, it works seamlessly on any operating system with USB stack support.
- How can the TUSB8020B-Q1 be customized?
Customization is possible through OTP ROM, I2C EEPROM, or I2C/SMBus slave interface.
- What is the package type of the TUSB8020B-Q1?
The device is available in a 48-terminal HTQFP package.
- What clock input does the TUSB8020B-Q1 support?
The device supports a single clock input with a 24-MHz crystal or oscillator.
- Does the TUSB8020B-Q1 provide a unique identifier?
Yes, it provides a 128-bit Universally Unique Identifier (UUID).
