●description
●The TUSB2046 is a 3.3 V CMOS hub device that provides one upstream port and four downstream ports in compliance with the 1.1 Universal Serial Bus (USB) specification. Because this device is implemented with a digital state machine instead of a microcontroller, no firmware programming is required. Fully compliant USB transceivers are integrated into the ASIC for all upstream and downstream ports. The downstream ports support both full-speed and low-speed devices by automatically setting the slew rate according to the speed of the device attached to the ports. The configuration of the BUSPWR pin selects either the bus-powered or the self-powered mode.
● Universal Serial Bus (USB) Version 1.1 Compliant
● 32-Pin TQFP Package With a 0.8 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 Over-current 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
Part 3D Model
