USB3500-ABZJ

Specialized Overview

The USB3500-ABZJ is a standalone Hi-Speed USB Physical Layer Transceiver (PHY) manufactured by Microchip Technology. It features a UTMI+ interface compliant with Revision 1.0 and supports USB 2.0 specifications including High-Speed (480 Mb/s), Full-Speed (12 Mb/s), and Low-Speed (1.5 Mb/s) data rates. The device operates on a single 3.3V supply, drawing 55mA typical unconfigured current and 83uA in suspend mode. It integrates a 24MHz crystal oscillator, internal PLL, and OTG protocol support. The component is housed in a 56-pin QFN package (8x8mm) and functions within a commercial temperature range of 0°C to +70°C.

Specialized Feature Summary

• Supports On-The-Go (OTG) protocol with Host Negotiation Protocol (HNP) and Session Request Protocol (SRP).
• Integrates internal 1.8V regulators allowing operation from a single 3.3V supply.
• Includes an integrated 24MHz crystal oscillator or external clock input capability.
• Features low latency high-speed receiver and internal short circuit protection for ID, DP, and DM lines.

Specialized Applications

• Cell Phones
• MP3 Players
• Portable Media Players

Specialized Procurement Notes

Verify the specific suffix ABZJ against the manufacturer's official documentation to confirm package type and temperature grade. Ensure the design accounts for the 56-pin QFN thermal requirements and ground flag connection. Confirm that the system power supply meets the 3.0V to 3.6V operating range specified for the VDD3.3 pin.

Specialized Selection Notes

Select this component when a standalone PHY with UTMI+ interface is required for USB 2.0 designs. It is suitable for applications needing OTG functionality without integrating analog PHY blocks into an SOC or FPGA. Consider the 55mA active current consumption for bus-powered designs and the 83uA suspend current for battery-operated devices.

Specialized Part Context

The USB3500 series includes variants such as the USB3250 and USB3280. The USB3500 distinguishes itself by supporting all levels of the UTMI+ specification, including Level 3 features like FS pre-amble support. It serves as a flexible alternative to integrating analog PHY blocks directly into custom ASICs or FPGAs.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.

Specialized FAQ

What is the maximum data rate supported by the USB3500?

The USB3500 supports High-Speed (HS) data rates up to 480 Mb/s, as well as Full-Speed (12 Mb/s) and Low-Speed (1.5 Mb/s).

How is the clock generated for the USB3500?

The device integrates a 24MHz crystal oscillator. It can also accept an external 24MHz clock signal driven into the XI pin, in which case the XO pin should be floated.

Does the USB3500 support On-The-Go (OTG) functionality?

Yes, the USB3500 fully supports the On-The-Go (OTG) protocol defined in the On-The-Go Supplement to the USB 2.0 Specification, including HNP and SRP.