Overview
The TUSB2077A, produced by Texas Instruments, is a 7-port USB hub that complies with the USB 2.0 specification. This device is a 3.3-V CMOS ASIC that integrates full-speed USB transceivers for all upstream and downstream ports. It operates without the need for software programming, as it is implemented with a digital state machine rather than a microcontroller. The hub supports both bus-powered and self-powered modes, making it versatile for various applications.
Key Specifications
| Parameter | Description |
|---|---|
| Number of Downstream Ports | Up to 7 |
| Power Source Modes | Bus-Powered (supports 4 ports), Self-Powered (supports 7 ports) |
| Power Management | Individual-port and ganged-port power management with overcurrent protection |
| Clock Source | 6-MHz or 48-MHz clock input |
| Package Type | 48-Pin LQFP (Low-Profile Quad Flatpack) |
| Operating Voltage | 3.3 V |
| Junction Temperature | 0°C to 115°C |
| Thermal Resistance (Junction-to-Ambient) | 66.2 °C/W |
Key Features
- Fully compliant with the USB 2.0 specification as a full-speed hub.
- Integrated USB transceivers for all upstream and downstream ports.
- No software programming required due to digital state machine implementation.
- Supports both bus-powered and self-powered modes with individual-port and ganged-port power management.
- Overcurrent protection for downstream ports.
- Optional serial EEPROM interface for custom VID and PID.
- LED indicator control outputs for visualized monitoring of hub/port status.
- No special driver requirements; works seamlessly with any operating system with USB stack support.
Applications
- Computer systems
- Docking stations
- USB peripherals and accessories
- Embedded systems requiring multiple USB ports
Q & A
- What is the TUSB2077A?
The TUSB2077A is a 7-port USB hub that complies with the USB 2.0 specification, produced by Texas Instruments.
- How many downstream ports does the TUSB2077A support?
The TUSB2077A supports up to seven downstream ports.
- What are the power source modes of the TUSB2077A?
The TUSB2077A supports both bus-powered and self-powered modes.
- Does the TUSB2077A require software programming?
No, the TUSB2077A does not require software programming as it is implemented with a digital state machine.
- What types of power management does the TUSB2077A support?
The TUSB2077A supports individual-port and ganged-port power management with overcurrent protection.
- What clock sources can the TUSB2077A use?
The TUSB2077A can use either a 6-MHz or a 48-MHz clock input.
- What is the package type of the TUSB2077A?
The TUSB2077A is available in a 48-Pin LQFP (Low-Profile Quad Flatpack) package.
- What is the operating voltage of the TUSB2077A?
The operating voltage of the TUSB2077A is 3.3 V.
- What are the typical applications of the TUSB2077A?
The TUSB2077A is typically used in computer systems, docking stations, and other applications requiring multiple USB ports.
- Does the TUSB2077A support custom VID and PID?
Yes, the TUSB2077A supports custom VID and PID through an optional serial EEPROM interface.
