USB2642/ML - USB 2.0 Hub and Card Controller | Microchip
MPN： USB2642/ML ✓ 啟用中USB2642/ML 概覽
A USB hub controller is an interface semiconductor that manages one upstream USB connection and distributes traffic to downstream ports. A flash media card controller adds access to removable memory through SD or MMC interfaces. The USB2642/ML therefore belongs to the USB interface IC hierarchy: USB controller, interface IC, semiconductor, and embedded connectivity device.
The principal features are USB 2.0 high-speed operation, two downstream USB 2.0 ports, and an SD/MMC flash media interface. The verified manufacturer description also identifies the device as a cost-effective, energy-efficient, fully integrated solution. Its integrated design can reduce the need for separate hub and media-reader interface circuitry while supporting both USB expansion and card access.
The USB2642/ML is suitable for compact USB hubs, card readers, multifunction peripherals, docking systems, and embedded USB storage products. According to the manufacturer product page, it provides a USB expansion and flash media reader/writer combination in a single chip. The datasheet search results additionally describe sustained flash-media transfer rates exceeding 35 MB/s, although the exact system throughput depends on the attached device and implementation.
Designs must follow the manufacturer datasheet for decoupling, USB signal routing, card-interface layout, and exposed-pad thermal management. USB differential pairs should be routed with controlled impedance and minimized discontinuities. The SD/MMC interface and USB connectors should be placed to reduce signal coupling, while the power network should provide low-impedance return paths for both digital and high-current USB loads.
This page consolidates the verified manufacturer and distributor information, procurement context, package details, and application guidance for USB2642/ML. It also distinguishes the available same-family Microchip variants without presenting unverified cross-brand replacements as drop-in equivalents.
直接替換替代品，適用於 USB2642/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： USB2642/ML （相同外形與佔位） — 差異在於 Package, RoHS Status, Product Type, Flash Media Interface.
USB2642T/ML
✅ 直接替換聯絡詢價
查看資料表 →USB2642T-I/ML-SEU
✅ 直接替換📋 參考替代品（不在目錄中）
USB2642-I/ML
✅ 直接替換聯絡詢價
查看資料表 →USB2642T-I/ML
✅ 直接替換聯絡詢價
查看資料表 →USB2642T/ML
✅ 直接替換聯絡詢價
查看資料表 →USB2642/ML 規格
| Product Type | USB 2.0 hub and flash media card controller combo |
| USB Compliance | USB 2.0 compliant |
| USB Speed | Low Speed, Full Speed, and High Speed |
| Downstream USB Ports | 2 ports |
| Flash Media Interface | SD/MMC |
| Sustained Flash Transfer Rate | Exceeding 35 MB/s |
| 供應電壓 | 3.3 V |
| 封裝 | 48-QFN (7x7 mm) |
| 安裝類型 | Surface Mount |
| I2C Over USB Bridge | Supported |
| SD Over USB Bridge | Supported |
| RoHS 狀態 | RoHS Compliant |
| Exposed Thermal Pad | Present |
| Manufacturer | Microchip Technology |
| Datasheet Document Number | DS00001578F |
USB2642/ML 48-qfn (7x7 mm) 腳位配置指南
USB2642/ML（48-qfn (7x7 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： USB2642/ML.
請參閱 資料表 以查看完整腳位配置。
典型應用
USB2642/ML 適用於 6 應用s: Compact USB 2.0 Hub, USB Flash Media Reader, Multifunction USB Peripherals, USB Docking Station, Embedded USB Storage Appliance, Industrial USB Interface Card.
Compact USB 2.0 Hub
The Microchip USB2642/ML is suited to compact USB 2.0 hubs because it integrates two downstream USB ports with a hi-speed hub controller. It can serve as the central interface device in a powered or bus-powered peripheral, reducing the need for separate hub-controller silicon. The verified manufacturer material identifies USB 2.0 Low Speed, Full Speed, and High Speed operation, while the two-port topology provides a clear expansion path for keyboards, storage, and other peripherals. The design must follow the datasheet for USB differential routing, connector protection, power distribution, and exposed-pad thermal handling.
推薦
USB Flash Media Reader
USB2642/ML fits a USB flash-media reader because its SD/MMC interface and SD-over-USB bridge combine removable-card access with USB connectivity. The verified datasheet information states that the flash media interface can support sustained transfer rates exceeding 35 MB/s, although real throughput depends on the card and host link. Designers should use the manufacturer’s recommended card-signal layout, provide stable 3.3 V power, and keep USB and SD/MMC return paths continuous to minimize data errors.
推薦
Multifunction USB Peripherals
USB2642/ML can support multifunction peripherals that need both USB expansion and removable-media connectivity. The integrated hub, SD/MMC interface, I2C-over-USB bridge, and SD-over-USB bridge reduce the number of separate interface functions in an embedded peripheral. This is useful for all-in-one desk accessories, storage systems, and compact docking products. The implementation should validate USB enumeration, card detection, power sequencing, and device firmware against the final product requirements.
推薦
USB Docking Station
USB2642/ML is applicable to docking stations that expose multiple USB devices while also providing card-reader access. Its two downstream USB 2.0 ports provide a straightforward hub function, while the SD/MMC interface adds storage-media support without requiring a separate reader controller. The verified 3.3 V supply specification and 48-QFN package support compact designs, but thermal and signal-integrity planning remain essential. Use short, impedance-controlled USB traces and carefully plan connector and cable return paths.
推薦
Embedded USB Storage Appliance
USB2642/ML can serve embedded storage appliances that need USB host expansion plus SD/MMC media access. The USB hub controller provides two downstream ports, and the flash-media interface supports card-connected storage workflows. Because sustained transfer rates exceeding 35 MB/s are stated for the flash interface, the final design should still validate host throughput, card characteristics, cable loss, and firmware buffering. Power-loss protection and connector safeguards should be designed separately from the controller.
推薦
Industrial USB Interface Card
USB2642/ML is appropriate for industrial interface cards where one USB upstream connection must support two downstream ports and removable flash media. The integrated design is useful when board space and component count matter, while the manufacturer describes the controller as energy-efficient and cost-effective. Industrial implementations should validate operating-temperature limits, ESD protection, grounding, and connector qualification because those details are not fully specified in the supplied verified excerpts. Follow the official datasheet for pin assignments and exposed-pad land geometry.
推薦
推薦產品摘要
工程參考資料，適用於 USB2642/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | USB2642T/ML | USB2642T-I/ML-SEU | USB2642-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) |
| USB Version | USB 2.0 | USB 2.0 family; exact variant details require datasheet confirmation | USB 2.0 family; exact variant details require datasheet confirmation | USB 2.0 |
主要差異化特點
- Integrated hub and removable-media interface (對比USB2642-I/ML)
- Two downstream USB ports (對比USB2642T/ML)
- Single-chip functional consolidation (對比USB2642T-I/ML-SEU)
- Documented 3.3 V operation and 48-QFN package (對比USB2642T-I/ML)
設計說明
Route the USB 2.0 differential pairs as a controlled-impedance pair with continuous reference-plane return paths and minimal vias or stubs. Keep the USB traces away from switching nodes and high-current connector paths. The USB2642/ML supports Low Speed, Full Speed, and High Speed operation, so the layout must preserve adequate signal integrity across all required speeds. Follow the Microchip datasheet for the exact pad, connector, and test-point recommendations.
The 48-QFN package includes an exposed pad that should be connected to the ground plane according to the Microchip datasheet land pattern. Provide uninterrupted copper beneath the package where practical, use the recommended via arrangement, and account for heat from both the controller and external power-supply or connector components. Do not treat the exposed pad as an unverified substitute for the complete thermal design; follow the manufacturer’s reflow and soldering guidance.
Place USB, SD/MMC, power, and grounding structures with the final connector locations in mind. Keep high-current USB return paths short and solid, separate noisy power conversion paths from sensitive signal areas, and use manufacturer-recommended bypass capacitors close to the appropriate supply pins. Validate the final stack-up, controlled impedances, card traces, and USB pair geometry before release to manufacturing.
The verified data identifies USB2642/ML as a 3.3 V, 48-QFN device with USB 2.0 hub and SD/MMC functions, but it does not provide complete electrical, temperature, pinout, or lifecycle tables. Do not infer missing limits from related USB2642 variants. Before schematic release, verify the exact ordering code, pin names, exposed-pad dimensions, operating-temperature grade, recommended components, and host-device compatibility against the official manufacturer documentation.
合規資訊
The verified distributor data identifies USB2642/ML as RoHS Compliant. REACH, AEC-Q100, lead-free status, halogen-free status, and conflict-minerals information are not stated in the supplied data.
