All Downstream Ports Support Full-Speed and Low-Speed Operations
Power Switching and Overcurrent Reporting is Provided Per Port or Ganged
Supports Suspend and Resume Operations
Suspend Status Terminal Avaliable for External Logic Power Down
Supports Custom Vendor ID and Product ID With External Serial EEPROM
3-State EEPROM Interface to Allow EEPROM Sharing
Push-Pull Outputs for PWRON Eliminate the Need for External Pullup Resistors
Noise Filtering on OVRCUR Provides Immunity to Voltage Spikes
Supports 6-MHz Operation Through Crystal Input or 48-MHz Input Clock
New Functional Terminals Introduced to Reduce the Board Material Cost
3 LED Indicator Control Outputs Enable Visualized Monitoring of 6 Different Hub/Port Status (HUBCFG, PORTPWR, PORTDIS)
Output Terminal Available to Disable External Pullup Resistor on DP0 for 15 ms After Reset or After Change on BUSPWR and Enable Easy Implementation of On-Board Bus/Self Power Dynamic Switching Circuitry
Available in 48-Terminal LQFP Package
JEDEC descriptor S-PQFP-G for low-profile quad flatpack (LQFP)
Description
The TUSB2077A hub is a 3.3-V CMOS device that provides up to seven downstream ports in compliance with the USB version 1.1 specification. Because this device is implemented with a digital state machine instead of a microcontroller, no software 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 terminal selects either the bus-powered or self-powered mode. The introduction of the DP0 pullup resistor disable terminal, DP0PUR, makes it much easier to implement an onboard bus/self-power dynamic-switching circuitry.
* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.
Inventory
Reported Distributor Inventory as of 9:34 AM GMT, 09 Feb 2010
** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.
* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.
If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.