TUSB2046BIRHBTG4
4端口集线器的通用串行BUSWITH可选的串行EEPROM接口 4-PORT HUB FOR THE UNIVERSAL SERIAL BUSWITH 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
