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USB2503A

Status: Not Recommended for new designs

Features:

  • Compliant with USB 2.0 Specification
  • Hub Controller IC with Three Downstream Ports
  • MultiTRAK 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
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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.

Please consider this device USB2513B

Additional Features

    Note: The USB2503 is not recommended for new designs. The USB2513B is the suggested replacement device for this product.

    General Features

    • Compliant with USB 2.0 Specification
    • Hub Controller IC with Three Downstream Ports
    • MultiTRAK 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
Parametrics
Name
Value
Upstream Port
USB 2.0
USB Speed
USB 2.0
Downstream Ports
3
MGMT I/F
I2C
ROM I/F
SPI
Op Voltage (V)
3.3
MultiTRAK Tech
Yes
Temp. Range Max.
70

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
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
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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