USB3280-AEZG-TR

Specialized Overview

The USB3280-AEZG-TR is a Hi-Speed USB Device PHY with a UTMI interface, manufactured by Microchip Technology. It supports 480Mbps Hi-Speed and 12Mbps Full Speed data transmission rates compliant with the USB 2.0 specification. The device operates on a single +3.3V supply voltage, utilizing an internal 1.8V regulator. It features an 8-bit bidirectional parallel interface running at a 60MHz system clock (CLKOUT). Key electrical parameters include a typical unconfigured current of 55mA and a suspend current of 83µA. The component operates within an industrial temperature range of -40°C to +85°C and is housed in a 36-pin QFN package.

Specialized Feature Summary

• Complies with the UTMI specification using an 8-bit bidirectional parallel interface for high-speed data transfer.
• Integrates internal termination resistors and short circuit protection to minimize external component requirements.
• Features an on-chip oscillator compatible with low-cost 24MHz crystals for system clocking.
• Provides robust ESD protection levels and latch-up performance exceeding industry standards.

Specialized Applications

• Cell Phones
• MP3 Players
• Scanners
• External Hard Drives
• Digital Still and Video Cameras

Specialized Procurement Notes

Verify the specific ordering suffix '-TR' indicates tape and reel packaging when sourcing components. Confirm that the RoHS compliance status matches current regulatory requirements for your region. Ensure the supplier provides documentation verifying the industrial temperature grade (-40°C to +85°C) if operating in extreme environments. Cross-reference the datasheet revision number to ensure compatibility with your design specifications.

Specialized Selection Notes

Select this component for designs requiring a UTMI-compliant physical layer for USB 2.0 devices. It is suitable for ASICs, SoCs, or FPGAs needing a bridge to the USB bus. Consider the low power consumption for battery-powered applications. Verify that the host controller supports the required 8-bit parallel interface timing. Ensure the design can accommodate the necessary external crystal and bias resistor components.

Specialized Part Context

The USB3280 serves as a physical layer transceiver for USB 2.0 peripherals. It bridges digital controllers to the USB bus via the UTMI interface. This component is part of Microchip's portfolio of USB interface solutions designed for high-speed data communication. It replaces discrete PHY implementations by integrating essential analog and digital functions into a single chip.

Specialized Replacement Considerations

Check for updated revisions of the USB3280 series. Evaluate other Microchip USB PHYs with similar UTMI interfaces if pin compatibility is not required. Verify functional equivalence regarding speed and power consumption before substituting.

Specialized FAQ

What type of external clock source does the USB3280 require?

The USB3280 requires an external 24MHz crystal connected between the XI and XO pins to generate the system clock.

How many power supplies are needed for operation?

Only one external power supply (+3.3V) is required, as the device includes an internal 1.8V regulator.

What is the purpose of the RBIAS pin?

The RBIAS pin requires an external 1% tolerance 12kΩ resistor to ground to set the high-speed transmit current level and on-chip termination impedance.