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USB2503

Status: In Production

Features:

  • Compliant with USB 2.0 Specification
  • Hub Controller IC with Three Downstream Ports
  • MultiTRAK&trade Technology Provides One Transaction Translator Per Port
  • Default Configuration with Pin Selectable Options
  • Flexible OEM Configuration Options
  • 48 Pin QFN RoHS compliant package
  • Integrated 1.8V regulator
  • Integrated Termination and Pull-Up/Pull-Down Resistors
  • Internal Short Circuit Protection of DP and DM Lines
  • On-Chip Oscillator Uses Low Cost 24MHz Crystal
  • Supports Ganged or Individual Over-Current Protection and Power Control
  • 3.3V I/O with 5V tolerance
  • Customize Vendor ID, Product ID, and Device ID
  • Operation as a bus-powered, self-powered or dynamic-powered hub. (When configured for dynamic operation, the controller automatically switches to bus-powered mode if a local power source is unavailable).
  • Select whether the hub is part of a compound device (When any downstream facing port is permanently hardwired to a USB peripheral device, the hub is part of a compound device)
  • Select the presence of a permanently hardwired USB peripheral device on a port by port basis
  • Configure the delay time for filtering the over-current sense inputs
  • Configure the delay time for turning on downstream port power
  • Indicate the maximum current that the 3-port hub consumes from the USB upstream port
  • Indicate the maximum current required for the hub controller
  • Select Operation as Either a Bus-Powered Hub or a Self-Powered Hub
  • Select Downstream Ports as Non-removable Ports
  • Select Downstream Ports as Disabled Ports
  • Select Downstream Port Power Control and Over-Current Detection on a Ganged or Individual Basis
  • Select Downstream Port Power Control Polarity
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

General Description

The USB2503 3-port hub controller is fully compliant with the USB 2.0 Specification and does not require firmware development. When connected to a USB high-speed host, the three downstream ports can operate at low-speed (1.5Mb/s), full-speed (12Mb/s), or high-speed (480Mb/s). As required by the USB 2.0 Specification, the USB2503 is fully backward compatible with legacy USB full-speed hosts.

A default configuration is available in the USB2503 following a reset. This configuration may be sufficient for some applications when it is desired to save the expense of an EEPROM. The controller may be configured from a microcontroller or an external EEPROM. When using the microcontroller interface, the USB2503 appears as a SMBus slave device. The EEPROM interface supports a 2-wire I2C device.

All required resistors on the USB ports are integrated into the USB2503. This includes all series termination resistors on D+ and D- pins and all required pull-down and pull-up resistors on D+ and D- pins. The over-current sense inputs for the downstream ports have internal pull-up resistors.


*The USBCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

Additional Features

    Note: The USB2503 is not recommended for new designs. The USB2513 is the suggested replacement device for this product.

    General Features

    • Compliant with USB 2.0 Specification
    • Hub Controller IC with Three Downstream Ports
    • MultiTRAK&trade Technology Provides One Transaction Translator Per Port
    • Default Configuration with Pin Selectable Options
    • Flexible OEM Configuration Options
    • 48 Pin QFN RoHS compliant package

    Hardware Features

    • Integrated 1.8V regulator
    • Integrated Termination and Pull-Up/Pull-Down Resistors
    • Internal Short Circuit Protection of DP and DM Lines
    • On-Chip Oscillator Uses Low Cost 24MHz Crystal
    • Supports Ganged or Individual Over-Current Protection and Power Control
    • 3.3V I/O with 5V tolerance

    OEM Selectable Features

    The 3-Port Hub supports several OEM selectable features:

    • Customize Vendor ID, Product ID, and Device ID
    • Operation as a bus-powered, self-powered or dynamic-powered hub. (When configured for dynamic operation, the controller automatically switches to bus-powered mode if a local power source is unavailable).
    • Select whether the hub is part of a compound device (When any downstream facing port is permanently hardwired to a USB peripheral device, the hub is part of a compound device)
    • Select the presence of a permanently hardwired USB peripheral device on a port by port basis
    • Configure the delay time for filtering the over-current sense inputs
    • Configure the delay time for turning on downstream port power
    • Indicate the maximum current that the 3-port hub consumes from the USB upstream port
    • Indicate the maximum current required for the hub controller

    Pin Selectable Options for Default Configuration

    • Select Operation as Either a Bus-Powered Hub or a Self-Powered Hub
    • Select Downstream Ports as Non-removable Ports
    • Select Downstream Ports as Disabled Ports
    • Select Downstream Port Power Control and Over-Current Detection on a Ganged or Individual Basis
    • Select Downstream Port Power Control Polarity

Documents

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CAD Resource

Gerber Files

IBIS

11/08/2006
73KB
01/17/2007
69KB

Schematics

User Guides


Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
USB2503A-HZH
0.129500
1.269231
48
VQFN
7x7x0.9mm
Matte Tin
e3
USB2503-HZH
0.129500
1.269231
48
VQFN
7x7x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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