Overview
The TUSB4020BI, produced by Texas Instruments, is a two-port USB 2.0 hub designed to provide high-speed, full-speed, and low-speed USB connectivity. This device supports multi-transaction translator (MTT) hub functionality with two transaction translators, enabling efficient data transfer between the upstream and downstream ports. The TUSB4020BI is available in a 48-pin HTQFP package and is offered in an industrial version, operating over a temperature range of –40°C to 85°C.
Key Specifications
| Specification | Description |
|---|---|
| Package Type | 48-pin HTQFP (PHP) |
| Package Size | 9mm × 9mm |
| USB Version | USB 2.0 |
| Upstream Port | High-speed/full-speed connections |
| Downstream Ports | High-speed, full-speed, or low-speed connections |
| Power Management | Per-port or ganged power switching and overcurrent protection |
| Battery Charging Support | CDP (Charging Downstream Port) and DCP (Dedicated Charging Port) modes |
| Configuration Interface | I2C EEPROM or SMBus target interface |
| Operating Temperature Range | –40°C to 85°C |
| Thermal Resistance | Junction-to-ambient: 31.8°C/W, Junction-to-case (top): 16.1°C/W, Junction-to-board: 13°C/W |
Key Features
- Multi-transaction translator (MTT) hub with two transaction translators
- Support for high-speed, full-speed, and low-speed USB connections
- Per-port or ganged power switching and overcurrent protection
- Battery charging support including CDP and DCP modes
- Customization through OTP ROM, I2C EEPROM, or I2C/SMBus target interface
- Automatic mode for transparent support of BC devices and Divider mode charging solutions
- Support for I2C and SMBus modes for configuration
Applications
- Computer systems
- Docking stations
- Monitors
- Set-top boxes
Q & A
- What is the TUSB4020BI? The TUSB4020BI is a two-port USB 2.0 hub produced by Texas Instruments.
- What package type is the TUSB4020BI available in? The TUSB4020BI is available in a 48-pin HTQFP package.
- What are the supported USB connection speeds? The device supports high-speed, full-speed, and low-speed USB connections.
- Does the TUSB4020BI support battery charging? Yes, it supports CDP and DCP modes for battery charging.
- How can the TUSB4020BI be configured? It can be configured through OTP ROM, I2C EEPROM, or an I2C/SMBus target interface.
- What are the operating temperature ranges for the TUSB4020BI? The device operates over a temperature range of –40°C to 85°C.
- What is the thermal resistance of the TUSB4020BI? The junction-to-ambient thermal resistance is 31.8°C/W, junction-to-case (top) is 16.1°C/W, and junction-to-board is 13°C/W.
- What power management options are available? The device supports per-port or ganged power switching and overcurrent protection.
- Can the TUSB4020BI be used in industrial environments? Yes, it is offered in an industrial version.
- What are some common applications for the TUSB4020BI? Common applications include computer systems, docking stations, monitors, and set-top boxes.
