Part Number: USB2514B-AEZC-TR

Manufacturer: Microchip Technology


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of USB2514B-AEZC-TR

Datasheet  USB2514B-AEZC-TR datasheet
Category Integrated Circuits (ICs)
Family Interface – Controllers
Manufacturer Microchip Technology
Packaging Tape & Reel (TR)
Part Status Active
Protocol USB
Function Hub Controller
Interface USB
Voltage – Supply 3 V ~ 3.6 V
Current – Supply 70mA
Operating Temperature 0°C ~ 85°C
Package / Case 36-VFQFN Exposed Pad
Supplier Device Package 36-QFN (6×6)


Microchip Technology Inc. makes the USB2514B-AEZC-TR, a USB 2.0 Hi-Speed hub controller with four downstream ports. It is designated by the model number USB2514B-AEZC-TR. It makes adding USB functionality to a machine simple and inexpensive at the same time. The USB2514B-AEZC-TR hub controller is going to be broken down in great detail throughout the course of this article so that you can have a good understanding of how it works.

This guide will cover the technical specs, features, and applications of the USB2514B-AEZC-TR and the benefits of using this controller in your design. Also, the guide will discuss the advantages of utilizing this controller. In addition to this, the book will include advice on how to get started with the USB2514B-AEZC-TR and how to use it in your design. This guide will offer you the information you need, whether you are an experienced engineer or a rookie, to effectively incorporate the USB2514B-AEZC-TR hub controller into your design. Whether you are an experienced engineer or a beginner, you may use this guidance.

General Description

The USB2514B-AEZC-TR is a four-port USB hub controller compatible with both the full-speed (12 Mbps) and high-speed (480 Mbps) modes offered by USB 2.0. In addition, it is compatible with devices that use USB version 1.1. The controller has an integrated 3.3V voltage regulator that supports four downstream ports. You can configure the USB2514B-AEZC-TR through either an external EEPROM or an I2C interface.


  • Hub controller integrated circuit with high performance, low power consumption, and a tiny footprint that can support 2, 3, or 4 downstream ports.
  • Completely compatible with the USB 2.0 Standard in every way [1].


  • Complete power management, including independent or ganged control of the power delivered to each downstream port.
  • Pull-up and pull-down resistors, as well as USB termination, are fully incorporated.
  • It supports a single external 3.3 V supply source, and internal regulators give a core voltage of 1.2 V internally.
  • Onboard driver for a crystal operating at 24 MHz or an input for an external 24 MHz clock.
  • IDs for the vendor, the product, and the device can all be personalized.
  • 4 kilovolts of electrostatic discharge (ESD) protection from HBM JESD22-A114F. (powered and unpowered).
  • Allows for functioning using either its own power or bus power.
  • It complies with the USB Battery Charging specification and supports it.
  • 1.1 for Ports Responsible for Charging Downstream Devices (CDP).


  • LCD monitors and TVs
  • Multi-function USB peripherals
  • PC motherboards
  • Embedded systems

Detailed Description

● Battery Charging Support

According to the USB Battery Charging Standard, the USB251xB/xBi hub offers support for battery charging devices on a per-port basis. This support complies with the requirements of the specification. Pin strapping or setting the necessary configuration bits through I2C EEPROM or SMBus can be used to independently enable each downstream port on the hub to support battery charging. The hub can also be configured to support both of these methods.

  • USB Battery Charging

As soon as the power on reset and the hardware configuration process is over, a downstream port equipped for battery charging will turn on port power and begin charging the battery. The hub does not need to be enumerated for the port power to be enabled, and the VBUS DET flag does not have to be set. Under these circumstances, it is possible to charge the battery in the fully operational state and in the system’s S3, S4, and S5 power states.

Because the USB Battery Charging Standard does not interfere with the usual operation of USB, a device can charge its battery whenever it is convenient for it to do so. A port that allows for charging batteries must have the capacity to provide a current of 1.5 amps on the VBUS. A standard USB port power controller can safely tolerate the maximum amount of current before triggering an over-current warning is typically 0.8 amps. Because of this, a 5-volt power supply, port power controller, or over-current protection devices will need to be selected to accommodate the higher current consumption compared to normal USB hub designs.

● Special Behavior of PRTPWR Pins

As soon as the hardware configuration procedure is finished, the USB251xB/xBi will enable VBUS by asserting the port power. This will allow the bus to be used. PRTPWR will be turned off to prevent the circuitry from overloading if the port determines that an excessive current is being drawn. PRTPWR can only be activated from the host or by toggling RESET N if an over-current condition is detected when the hub is not being enumerated. This prevents the hub from being damaged.

These behaviors protect the hub from continuous short-circuit circumstances and offer battery charging even while the hub is not being enumerated. The user is informed that one of the ports has an over-current situation if the short circuit condition remains even after the hub has been inserted into a host system and the system continues to function normally. In any other case, the host system will have PRTPWR switched on, and the ports will function normally.


In conclusion, the USB2514B-AEZC-TR is a highly capable USB 2.0 hub controller with advanced features and specifications. This guide covers various aspects of the device, including its overview, electrical characteristics, applications, and troubleshooting techniques.

By utilizing the USB2514B-AEZC-TR, you can benefit from its support for up to four downstream USB 2.0 ports, configurable port mapping, and advanced power management capabilities. It is also highly compatible with various USB devices and operating systems.

To ensure optimal performance and avoid damage to the device, we must pay close attention to the electrical characteristics we discussed, such as the supply voltage and current, absolute maximum ratings, and input and output voltage levels.

ICRFQ offers this top-quality product with excellent service and an array of high-quality goods. So, why not upgrade your power system and ensure it can handle the stresses of various uses? Contact ICRFQ today to learn how the USB2514B-AEZC-TR can benefit your application and place your order.

Don’t wait any longer to improve your power system’s performance with the USB2514B-AEZC-TR from ICRFQ. Take the first step today and experience the benefits of this highly capable USB 2.0 hub controller.

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