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TUSB2046A データシート

部品番号コンポーネント説明メーカー
TUSB2046A 4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE TI
Texas Instruments TI
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description
The TUSB2046A 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 LQFP† 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
 Enhanced System ESD Performance

 

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