USB4640I-HZH-03-TR

Specialized Overview

The USB4640I-HZH-03-TR is a Hi-Speed HSIC USB hub and flash media controller combo solution manufactured by Microchip Technology. It features one upstream High-Speed Inter-Chip (HSIC) port compliant with HSIC 1.0 and two exposed Hi-Speed USB 2.0 downstream ports for external peripheral expansion. A dedicated flash media reader/writer is internally attached to a third downstream port as a USB compound device. The device supports SD, MMC, Memory Stick, and xD-Picture Card formats. It operates on a single 3.3 V supply with an internal 1.8 V regulator, housed in a 48-pin QFN package.

Specialized Feature Summary

• Integrates an HSIC host interface with dual USB 2.0 downstream ports and a built-in multi-format flash media controller.
• Supports flexible PCB layout through programmable PortSwap pin mapping and PHYBoost signal drive strength adjustment.
• Configurable via external I2C or SPI ROM to customize vendor IDs, product IDs, and firmware execution sources.
• Includes an onboard 8051 microprocessor with 64 KB ROM and 9 KB RAM for autonomous operation.

Specialized Applications

• 3G/4G handsets, smartphones, and mobile devices
• Desktop and mobile PCs
• Printers and GPS navigation systems
• Media players and consumer A/V equipment

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm temperature range and packaging type. The '-I' designation indicates industrial temperature rating, while '-TR' denotes tape and reel packaging. Ensure compatibility with the target system's voltage levels and interface requirements before finalizing procurement.

Specialized Selection Notes

Select this component when a low-power chip-to-chip interconnect is required between an HSIC-enabled host and USB peripherals. It is suitable for designs needing integrated flash media support without additional controllers. Consider the USB4640 variant if commercial temperature range suffices, or verify that the 48-pin QFN footprint aligns with the PCB design constraints.

Specialized Part Context

This part belongs to the USB4640 family of high-speed inter-chip USB hubs. The 'USB4640i' specifically denotes the industrial temperature grade version (-40°C to +85°C), whereas the standard 'USB4640' covers the commercial range (0°C to +70°C). The '-ZH' suffix typically refers to the 48-pin QFN package, and '-TR' indicates the reel packaging format.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology directly for qualified alternatives or cross-reference options based on specific electrical and mechanical requirements.