USB4640I-HZH-03 - USB 2.0 HSIC Hub Controller | Microchip
料号： USB4640I-HZH-03 ✓ 量产中USB4640I-HZH-03 概述
A USB hub controller is an interface integrated circuit that manages one host USB connection and expands it into multiple USB ports or coordinates an internal USB 2.0 route. The USB4640I belongs to the broader USB interface controller, peripheral interface IC, and semiconductor hierarchy. Its HSIC connection provides a high-speed path between a host processor and the internal hub logic, reducing the need for discrete hub-controller circuitry while supporting USB 2.0 devices.
Key characteristics include high-speed inter-chip USB 2.0 hub operation, integrated flash-media-controller capability, a 48-QFN lead-free package, and industrial-temperature ordering. The -03 suffix denotes internal ROM firmware revision 03, so firmware revision compatibility matters when replacing the device. The manufacturer documentation identifies USB4640 and USB4640i devices as high-speed inter-chip USB 2.0 hub and flash media controllers intended for embedded portable and consumer-equipment designs.
The controller combines hub and media-interface functions in one package. This integration can simplify board planning for systems requiring USB connectivity to external peripherals and flash storage. Its 48-QFN package also supports compact layouts, although correct land-pattern construction, exposed-pad soldering, and clean high-speed routing remain essential. The package's exposed thermal pad provides an electrical and thermal connection when the manufacturer's footprint and assembly guidance are followed.
Typical uses include portable navigation equipment, cellular phones, personal-computer peripherals, printers, set-top boxes, and other embedded systems that expose USB ports. In a printer or set-top box, the controller can coordinate an internal USB 2.0 route and external device connections. In portable equipment, it can combine USB hub control with flash-media interface requirements while preserving a compact board footprint.
The primary design consideration is firmware and PCB compatibility. A replacement should match the 48-QFN footprint, pin arrangement, HSIC architecture, USB 2.0 behavior, temperature grade, and ROM revision. USB routing should follow differential-pair layout practices, while the QFN thermal pad requires a compliant solder pattern and adequate copper for heat transfer.
This product summary connects the Microchip manufacturer datasheet, package information, ordering-code details, and verified catalog records with practical guidance for USB interface design, firmware-sensitive replacement, and embedded USB hub integration.
直接替换替代料： USB4640I-HZH-03 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： USB4640I-HZH-03 （相同外形与封装尺寸）.
USB4640-HZH-03
✅ 直接替换联系询价
查看数据手册 →USB4640I-HZH-03 规格参数
| Device Type | USB 2.0 hub and flash media controller |
| USB Version | USB 2.0 |
| Host Interface | HSIC high-speed inter-chip interface |
| 封装 | 48-QFN (7 x 7 mm) |
| 引脚数量 | 48 terminals |
| Package Shape | Square |
| Mounting Form | No-lead surface-mount package |
| Temperature Grade | Industrial |
| ROM Firmware Revision | 03 |
| Order Code | USB4640I-HZH-03 |
| Lead-Free Status | Lead-free |
| RoHS 状态 | RoHS compliant |
| Shipping Format | Tape and reel |
| Integrated Functions | USB 2.0 hub and flash media controller |
| Interface Classification | Specialized USB interface IC |
USB4640I-HZH-03 square 引脚配置指南
USB4640I-HZH-03（square 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： USB4640I-HZH-03.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB4640I-HZH-03 适用于 6 应用s: Personal Computer USB Expansion, Printer USB Interface, Set-Top Box Connectivity, Cell Phone and Portable Device, GPS and Navigation Equipment, Industrial Flash Media Interface.
Personal Computer USB Expansion
The USB4640I-HZH-03 fits embedded personal-computer systems that require a high-speed USB 2.0 hub function controlled through an HSIC connection to a host processor. Its 48-QFN 7 x 7 mm package keeps the controller compact while integrating hub and flash-media-control functions. The manufacturer identifies personal computers among target applications. In implementation, the HSIC connection and USB differential pairs require controlled impedance, continuous reference planes, and placement away from noisy switching nodes. Because ROM firmware revision 03 is encoded in the order code, firmware loading and device identification must be validated as part of system bring-up.
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Printer USB Interface
The USB4640I-HZH-03 is appropriate for printer electronics that need a compact high-speed USB 2.0 interface and flash-media-controller functionality. Its industrial temperature designation and 48-QFN package support embedded equipment designs, while the -03 ROM revision identifies the firmware configuration used by the system. The controller can sit between an embedded HSIC host and external USB connectivity, reducing discrete hub circuitry. PCB implementation should reserve the complete 48-QFN land pattern, provide a compliant exposed-pad solder connection, and route USB differential signals as short, continuously referenced pairs to minimize data-integrity risk.
推荐
Set-Top Box Connectivity
The USB4640I-HZH-03 suits set-top-box designs requiring an integrated high-speed USB 2.0 route and flash media interface. Its 48-QFN 7 x 7 mm package supports space-constrained consumer electronics, and the manufacturer lists set-top boxes among the USB4640 family's target applications. An embedded host can use HSIC to communicate with the hub controller while the device manages USB connectivity for peripherals or service functions. Layout should isolate HSIC and USB differential routing from switching-regulator and digital timing noise, while the QFN exposed pad must follow the manufacturer's thermal and electrical land-pattern requirements.
推荐
Cell Phone and Portable Device
The USB4640I-HZH-03 can support compact mobile-device architectures that combine an HSIC host connection, high-speed USB 2.0 hub functionality, and flash-media control. Cell phones are explicitly identified as a target application for the USB4640 family. The 48-QFN package limits board area compared with larger discrete implementations, but careful escape routing is needed between the fine-pitch QFN and external connectors. Keep USB and HSIC traces short, avoid stubs, use a continuous ground reference, and verify the exposed-pad thermal and solder connection according to the Microchip package drawing.
推荐
GPS and Navigation Equipment
The USB4640I-HZH-03 is suitable for GPS and navigation equipment that needs a high-speed USB interface for accessories, data transfer, or internal media connectivity. The manufacturer identifies GPS devices as an application for this controller family, while the industrial-grade ordering option supports embedded equipment requirements. Its combination of USB 2.0 hub and flash media control can simplify connectivity around a host processor. The board should preserve USB signal integrity through short matched traces, solid plane references, minimal connector stubs, and careful isolation from display, switching-converter, and wireless-interface circuitry.
推荐
Industrial Flash Media Interface
The USB4640I-HZH-03 fits embedded systems that coordinate high-speed USB 2.0 connectivity with flash-media access. Its industrial temperature designation and integrated hub-and-media-controller architecture allow one device to support both external USB expansion and internal storage-related functions. The -03 suffix identifies the internal ROM revision, making firmware compatibility a central replacement criterion. Design the board around the exact 48-QFN footprint, provide clean HSIC links, isolate sensitive routing from switching noise, and verify all flash-device support, electrical limits, and operating conditions against the manufacturer datasheet.
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推荐产品汇总
工程参考数据： USB4640I-HZH-03 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | USB4640-HZH-03 |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 48-QFN (7 x 7 mm) | 48-QFN (7 x 7 mm) |
| Device Type | USB 2.0 hub and flash media controller | USB 2.0 hub and flash media controller |
| Host Interface | HSIC | HSIC |
| Temperature Designation | Industrial, I suffix | No I suffix |
| ROM Firmware Revision | 03 | 03 |
| Lead-Free Packaging | Yes | Yes |
| RoHS Status | Compliant | Compliant |
关键差异点
- Explicit industrial-temperature order designation （对比 USB4640-HZH-03)
- Same documented package and firmware revision （对比 USB4640-HZH-03)
- Integrated hub and flash media functions （对比 USB4640-HZH-03)
设计说明
Use the Microchip USB4640/USB4640i package drawing to create the 48-QFN land pattern and exposed-pad connection. The target uses a 7 x 7 mm package with 48 terminals, so clearance, pad width, paste area, and the thermal pad should not be inferred from a generic QFN footprint. Apply the manufacturer's stencil and assembly recommendations to control solder bridging between closely spaced terminals and ensure a reliable electrical and thermal connection to the exposed pad.
Route HSIC and high-speed USB differential pairs over a continuous reference plane with matched impedance and minimal branching. Keep the QFN breakout short, remove unnecessary test-point stubs, and provide grounded return paths beneath the pairs. Separate these routes from switching-regulator inductors, high-current return paths, and noisy digital edges. Validate the completed layout for USB 2.0 signal integrity and HSIC timing using the manufacturer test and application guidance.
Do not treat USB4640-HZH-03 as an unconditional substitute merely because it shares the HZH 48-QFN package and -03 ROM revision. The target's I suffix denotes industrial temperature grade. Before substitution, compare every pin function, operating-temperature limit, electrical characteristic, USB enumeration behavior, flash-media capability, and device-identification value against the manufacturer datasheet. Also confirm that the tape-and-reel quantity and exposed-pad assembly process match the existing PCB.
The QFN exposed pad is part of the package's thermal and electrical design, but the device's power dissipation and junction-temperature limits are not stated in the accessible catalog data. Determine the actual dissipation from the design's supply voltage and operating current after those values are established. Then use the manufacturer's junction-temperature, thermal-resistance, exposed-pad, and maximum-board-area information to determine whether additional copper or thermal management is required.
合规信息
The Microchip USB4640/USB4640i datasheet identifies USB4640i-HZH-TR-xx as a 48-pin QFN, lead-free, RoHS-compliant device family. No automotive qualification claim is made for this part.
