●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: TID #30220231
●• 32-Pin LQFP(1) 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
