USB2642-I/ML - USB 2.0 Hub Card Reader | Microchip
料号： USB2642-I/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.8956 | $4.90 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
USB2642-I/ML 概述
A USB hub controller is an interface device that expands one host USB connection into multiple downstream ports while managing USB traffic and device connections. A flash media card controller provides read/write access to supported SD or MMC flash media. In the broader electronics hierarchy, the USB2642 belongs to interface ICs, USB interface controllers, USB 2.0 hub controllers, and combined flash media controllers.
The principal verified features are USB 2.0 compliance, high-speed operation, two downstream USB ports, and one SD/MMC flash media card interface. Its 48-QFN package supports compact surface-mount designs, while the exposed-pad package construction provides a defined thermal and electrical land pattern. The device is intended for systems that need local USB port expansion together with removable flash-media connectivity.
Typical uses include USB docking stations, compact desktop computers, consumer electronics, card-reader equipment, printers, storage accessories, and embedded USB peripherals. Because the controller consolidates hub and media-card functions, it can reduce the number of separate interface devices required in a compact system. Designers must still account for USB signal routing, connector protection, supply decoupling, card-detect wiring, and the exposed thermal pad when laying out the PCB.
For USB2642-I/ML designs, confirm the exact pin functions, electrical limits, reference circuitry, and supported media details against the Microchip datasheet before release. USB high-speed pairs require controlled impedance and careful return-path continuity; card-interface traces should be kept away from noisy switching nodes. The part is not a general-purpose power semiconductor, so a Safe Operating Area chart is not applicable.
This page combines the verified manufacturer and distributor information with package, application, procurement, and replacement guidance. It is intended to help engineers identify whether the USB2642-I/ML matches a USB hub plus flash-media architecture before committing the 48-QFN footprint to a PCB layout.
直接替换替代料： USB2642-I/ML ——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： USB2642-I/ML （相同外形与封装尺寸） ——差异在于 Flash Media Interface, Package.
快速对比工具——选择替代料号进行并排对比：
USB2642/ML
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →USB2642T-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
USB2642T-I/ML-SEU
✅ 直接替换📋 参考替代料（不在目录中）
USB2640I-HZH-02-TR
✅ 直接替换📋 参考替代料（不在目录中）
USB4604-1051HN
✅ 直接替换📋 参考替代料（不在目录中）
USB2642-I/ML 规格参数
| Product Type | USB 2.0 hub and flash media card controller combo |
| USB Compliance | USB 2.0 compliant |
| USB Speed Support | Low speed, full speed, and high speed |
| Downstream USB Ports | 2 ports |
| Flash Media Interface | SD/MMC flash media card interface |
| 电源电压 | 3.3 V |
| 封装 | 48-QFN, 7 mm × 7 mm |
| 安装类型 | Surface mount |
| Exposed Pad | Yes |
| Interface Class | Controller interface specialized |
| Primary Function | USB hub expansion |
| Secondary Function | Flash media card read/write |
| Manufacturer | Microchip Technology |
USB2642-I/ML 48-qfn, 7 mm × 7 mm 引脚配置指南
USB2642-I/ML（48-qfn, 7 mm × 7 mm 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： USB2642-I/ML.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2642-I/ML 适用于 6 应用s: USB Docking Stations, Desktop and Embedded USB Expansion, Flash Media Reader Devices, Printers and Storage Accessories, Consumer Electronics with Removable Media, USB Peripheral Aggregation.
USB Docking Stations
The Microchip USB2642-I/ML fits compact docking stations that need to add two downstream USB ports while retaining removable flash-media access. The 48-QFN 7 mm × 7 mm package helps preserve board area around connectors, while the USB 2.0 hub function organizes downstream traffic from a single host connection. The SD/MMC interface can support front-panel or service-access media handling without requiring a separate card-controller IC.
推荐
Desktop and Embedded USB Expansion
USB2642-I/ML is suitable for desktop and embedded systems where one USB host connection must become two downstream ports. Its low-speed, full-speed, and high-speed USB support allows the same controller to serve different peripheral classes, while the integrated flash-media interface adds a useful storage function. The design must preserve controlled-impedance USB pairs and provide the required connector and power protection around the controller.
推荐
Flash Media Reader Devices
The USB2642-I/ML is directly aligned with compact card-reader products because it combines an SD/MMC flash-media interface with two USB 2.0 downstream ports. This allows one host connection to support both removable media access and peripheral expansion. Board layout should keep the media-card signals away from high-current switching paths and should include proper card insertion, protection, and detection implementation.
推荐
Printers and Storage Accessories
The USB2642-I/ML can be used in printers and storage accessories that need local USB expansion plus removable flash-media connectivity. A single integrated controller reduces the number of discrete USB interface blocks in a compact enclosure, which can simplify firmware partitioning and PCB planning. The enclosure must still account for connector spacing, ESD protection, power-enable sequencing, and the thermal path from the exposed QFN pad.
推荐
Consumer Electronics with Removable Media
USB2642-I/ML is applicable to consumer products that expose USB connectivity and accept SD/MMC media, such as portable media devices, compact storage products, and multifunction peripherals. Its two downstream ports provide expansion without requiring a full-size host controller solely for peripheral management. Firmware and PCB qualification remain important because USB enumeration, card-media support, power sequencing, and connector behavior must be validated as a complete system.
推荐
USB Peripheral Aggregation
The USB2642-I/ML can aggregate two USB downstream ports and a flash-media path in a single 3.3 V controller. This is useful in compact industrial or instrumentation enclosures where connector count is limited but multiple service peripherals are expected. Industrial use should verify temperature and compliance requirements that are not included in the provided snippets, and the USB routing should use a controlled stack-up with continuous return paths.
推荐
推荐产品汇总
工程参考数据： USB2642-I/ML ——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 | USB2642/ML | USB2642T-I/ML | USB2642T-I/ML-SEU | USB2640I-HZH-02-TR | USB4604-1051HN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
关键差异点
- Combines USB hub expansion and flash-media control （对比 USB2640I-HZH-02-TR)
- Two downstream USB ports （对比 USB2642T-I/ML-SEU)
- Single 3.3 V controller for USB and media functions （对比 USB4604-1051HN)
设计说明
Route the USB 2.0 high-speed differential pairs as controlled-impedance traces with continuous reference planes and minimal stubs. Keep the USB connector, protection devices, and controller in the same signal path, and avoid routing the pairs across split planes or noisy switching regions. Use the Microchip datasheet layout recommendations for pair spacing, layer transitions, and connector placement.
Place input and output decoupling capacitors close to the USB2642-I/ML supply pins and connect the exposed thermal pad to the recommended ground or thermal land pattern. Keep the SD/MMC traces away from USB connector surge paths and high-current power switching nodes. Validate the 48-QFN land pattern, paste stencil, and assembly clearances against the package drawing before release.
Do not treat related USB2642 suffixes as automatic drop-in equivalents. The verified search results identify USB2642/ML and USB2642T-I/ML as related devices, but do not establish identical pin mapping or electrical limits. Confirm the exact ordering code, pinout, USB features, card interface, temperature range, and supply requirements against the official Microchip datasheet before substitution.
合规信息
The supplied verified snippets do not provide authoritative compliance values for RoHS, REACH, AEC-Q100, lead-free status, halogen-free status, or conflict minerals. Compliance must be confirmed from the current Microchip product documentation and applicable distributor records.
