SLLS413L February 2000  – June 2017 TUSB2046B , TUSB2046I

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (Continued)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1Absolute Maximum Ratings
    2. 7.2ESD Ratings
    3. 7.3Recommended Operating Conditions
    4. 7.4Thermal Information
    5. 7.5Electrical Characteristics
    6. 7.6Differential Driver Switching Characteristics (Full Speed Mode)
    7. 7.7Differential Driver Switching Characteristics (Low Speed Mode)
    8. 7.8Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1USB Power Management
      2. 8.3.2Clock Generation
    4. 8.4Device Functional Modes
      1. 8.4.1Vendor ID and Product ID With External Serial EEPROM
    5. 8.5Programming
  9. Application and Implementation
    1. 9.1Application Information
    2. 9.2Typical Application
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
      3. 9.2.3Application Curve
  10. 10Power Supply Recommendations
    1. 10.1TUSB2046x Power Supply
    2. 10.2Downstream Port Power
  11. 11Layout
    1. 11.1Layout Guidelines
      1. 11.1.1Placement
      2. 11.1.2Differential Pairs
      3. 11.1.3Ground
    2. 11.2Layout Example
  12. 12Device and Documentation Support
    1. 12.1Related Links
    2. 12.2Community Resources
    3. 12.3Trademarks
    4. 12.4Electrostatic Discharge Caution
    5. 12.5Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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
JEDEC descriptor S-PQFP-G for low-profile quad flatpack (LQFP).
JEDEC descriptor S-PQFP-G for low-profile quad flatpack (LQFP).

Applications

  • Computer Systems
  • Docking Stations

Description

The TUSB2046x 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
programming is required. Fully compliant USB transceivers are integrated into the ASIC for all upstream and downstream ports. The downstream ports support 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.

Configuring the GANGED input determines the power switching and overcurrent detection modes for the downstream ports. If GANGED is high, all PWRON outputs switch together and if any OVRCUR is activated, all ports transition to the power-off state. If GANGED is low, the PWRON outputs and OVRCUR inputs operate on a per-port basis.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TUSB2046B
TUSB2046BI
TUSB2046I
VQFN (32)5.00 mm × 5.00 mm
LQFP (32)7.00 mm × 7.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

USB-Tiered Configuration Example

TUSB2046B TUSB2046I keygraphic_slls413.gif