Description

The TUSB2046BIVFR is a single chip USB transceiver that supports both full-speed (12Mbps) and low speed (1.5Mbps) operation. It has an integrated 5V to 3.3V regulator which allows direct powering from the VBUS. The transceiver has an integrated voltage detector to detect the presence of the VBUS voltage. It also supports Sharing mode when VBUS is not present, allowing the D+/D– lines to be shared with other serial protocols. The TUSB2046BIVFR is designed to operate down to 1.6V, making it compatible with lower system voltages of most portable systems, including PDAs, MP3 players, and cell phones.

Specifications and Features

• Supports 1.5Mbps and 12Mbps serial data transmission

• ESD HBM: ±14kV on D+, D– Lines; ±5kV on VBUS

• ESD Compliant to IEC-61000-4.2 (Level 3)

• Separate I/O supply with operation down to 1.6V

• Integrated speed select termination supply

• Very low power consumption to meet USB ‘suspend’ current requirements

• Small QFN16 lead-free package

• No power supply sequencing requirements

• Software controlled re-enumeration

Application Scenarios

The TUSB2046BIVFR can be used in various applications, including:

• Network Interface Cards (NICs)

• USB hubs

• USB dongles

• USB peripherals

• Portable systems, such as PDAs, MP3 players, and cell phones

Comparison

The TUSB2046BIVFR has several advantages and disadvantages:

• Supports both full-speed and low-speed USB operation

• Integrated voltage detector for detecting VBUS voltage

• Sharing mode when VBUS is not present

• Compatible with lower system voltages

• Small package size

• No power supply sequencing requirements

• Not suitable for high-speed USB operations

• Limited maximum data transmission rate

• Limited ESD protection