TUSB2046BVFG4

4端口集线器的通用串行总线，可选的串行EEPROM接口 4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE

Description

The TUSB2046B is a 3.3-V CMOS hub device that provides one upstream port and four downstream ports in compliance with the Universal Serial Bus USB specification as a full-speed hub. Because this device is implemented with a digital state machine instead of a microcontroller, no firmware

Features

• Fully Compliant With the USB Specification as a Full-Speed Hub: D #30220231

• 32-Pin LQFP1 Package With a 0.8-mm Terminal Pitch or QFN Package With a 0.5-mm Pin Pitch

• 3.3-V Low-Power ASIC Logic

• Integrated USB Transceivers

• State Machine Implementation Requires No Firmware Programming

• One Upstream Port and Four Downstream Ports

• All Downstream Ports Support Full-Speed and Low-Speed Operations

• Two Power Source Modes

– Self-Powered Mode

– Bus-Powered Mode

• Power Switching and Overcurrent Reporting Is Provided Ganged or Per Port

• Supports Suspend and Resume Operations

• Supports Programmable Vendor ID and Product ID With External Serial EEPROM

• 3-State EEPROM Interface Allows EEPROM Sharing

• Push-Pull Outputs for PWRON Eliminate the Need for External Pullup Resistors

• Noise Filtering on OVRCUR Provides Immunity to Voltage Spikes

• Package Pinout Allows 2-Layer PCB

• Low EMI Emission Achieved by a 6-MHz Crystal Input

• Migrated From Proven TUSB2040 Hub

• Lower Cost Than the TUSB2040 Hub

• Enhanced System ESD Performance

• No Special Driver Requirements; Works Seamlessly With Any Operating System With USB Stack Support

• Supports 6-MHz Operation Through a Crystal Input or a 48-MHz Input Clock

Applications

• Computer Systems

• Docking Stations