Overview
The TUSB4020BI-Q1 is a two-port USB 2.0 hub designed by Texas Instruments, specifically tailored for automotive and industrial applications. This device supports high-speed, full-speed, and low-speed USB connections on both its upstream and downstream ports. It operates within an industrial temperature range of -40°C to 85°C, making it suitable for a variety of environments. The hub features multi-transaction translator (MTT) capabilities, ensuring efficient data transfer and compatibility with various USB devices. It also supports on-board and in-system OTP/EEPROM programming, allowing for customization and configuration through the USB 2.0 upstream port.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | -0.3 to 3.8 | V |
| Operating Temperature | -40 to 85 | °C |
| USB Speed | High-speed (480 Mbps), Full-speed (12 Mbps), Low-speed (1.5 Mbps) | |
| Package Type | 48-pin HTQFP (PHP) | |
| Package Size | 9mm × 9mm | |
| Clock Input | 24MHz crystal or oscillator | |
| Power Management | Per-port or ganged power switching, overcurrent protection |
Key Features
- AEQ-Q100 qualified for automotive applications
- Supports high-speed, full-speed, and low-speed USB connections
- No special driver requirements; works seamlessly on any operating system with USB stack support
- Multi-transaction translator (MTT) hub
- On-board and in-system OTP/EEPROM programming through the USB 2.0 upstream port
- Terminal strap configuration for features including battery charging support
- Customization through OTP ROM, I2C EEPROM, or I2C/SMBus target interface
- Per-port or ganged power switching and overcurrent protection
- Support for DCP and AUTOMODE for battery charging
Applications
- Automotive systems
- Computer systems
- Docking stations
- Monitors
- Set-top boxes
Q & A
- What is the operating temperature range of the TUSB4020BI-Q1?
The operating temperature range is -40°C to 85°C.
- What types of USB connections does the TUSB4020BI-Q1 support?
The device supports high-speed, full-speed, and low-speed USB connections.
- What is the package type and size of the TUSB4020BI-Q1?
The package type is 48-pin HTQFP (PHP), and the package size is 9mm × 9mm.
- Does the TUSB4020BI-Q1 require special drivers?
No, it works seamlessly on any operating system with USB stack support.
- What power management options are available on the TUSB4020BI-Q1?
The device supports per-port or ganged power switching and overcurrent protection.
- How can the TUSB4020BI-Q1 be customized?
Customization is possible through OTP ROM, I2C EEPROM, or an I2C/SMBus target interface.
- What battery charging modes does the TUSB4020BI-Q1 support?
The device supports DCP, AUTOMODE, and custom battery charging configurations.
- Can the TUSB4020BI-Q1 be used in automotive applications?
- What clock input does the TUSB4020BI-Q1 accept?
The device accepts a 24MHz crystal or oscillator as the clock input.
- How does the TUSB4020BI-Q1 handle overcurrent events?
During an overcurrent event, power to the affected downstream port(s) is switched off, depending on whether individual or ganged power control is enabled.
