USB2642T/ML USB 2.0 Hub and Flash Controller | Microchip
料号： USB2642T/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.3887 | $6.39 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
USB2642T/ML 概述
A USB hub controller is an interface IC that expands one host USB port into multiple downstream connections while managing USB traffic and device attachment. The flash media card controller portion adds access to supported flash media formats, creating a compact bridge between a USB host, USB peripherals, and removable storage. This combination is useful in docking stations, embedded systems, printers, set-top equipment, and compact industrial controllers where board space and peripheral integration are important.
The verified device data identifies USB 2.0 low-, full-, and high-speed operation, I2C and SPI interfaces, USB hub functionality, and flash-media controller functionality. The 48-QFN package provides a high pin count for integrated USB and storage connectivity, while the exposed pad supports thermal management on a suitably designed PCB. The exact supported media formats, electrical limits, operating-temperature range, and complete pin assignment are not provided in the supplied search data and must be confirmed from the manufacturer datasheet.
Typical implementation places the USB2642T/ML between a USB host controller and downstream USB ports, with flash-media interfaces serving external storage devices. Firmware must configure the hub and media-access functions, while the host system supplies reference, clock, power, and I2C or SPI control. Designers should follow Microchip's USB routing, impedance, decoupling, and exposed-pad guidance rather than treating the QFN footprint as a generic package.
The principal design consideration is signal integrity. USB high-speed edges require controlled impedance, short routing, continuous return paths, minimized stubs, and careful separation from noisy power and digital clocks. The exposed thermal pad must be connected to the intended ground or thermal plane according to the datasheet land pattern, and adequate decoupling must be placed close to the supply pins.
This page combines verified manufacturer and distributor descriptions, practical USB design considerations, and explicit data gaps for parameters not present in the supplied source material.
直接替换替代料： USB2642T/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： USB2642T/ML （相同外形与封装尺寸） ——差异在于 Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
USB2642T-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
USB2642/ML
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →USB2642T-I/ML-SEU
✅ 直接替换📋 参考替代料（不在目录中）
USB2642T/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 Function | Hi-speed USB hub |
| Flash Media Function | Flash media card reader and writer controller |
| Host Interface | USB |
| Control Interfaces | I2C and SPI |
| 封装 | 48-QFN, 7x7 mm |
| Exposed Pad | Yes |
| 安装类型 | Surface Mount |
| 引脚数量 | 48 pins |
| RoHS 状态 | Compliant per comparison result |
| Datasheet | USB2642 Data Sheet |
USB2642T/ML 48-qfn, 7x7 mm 引脚配置指南
USB2642T/ML（48-qfn, 7x7 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： USB2642T/ML.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2642T/ML 适用于 6 应用s: Compact USB Docking Station, Embedded USB Storage Gateway, Printer and Multifunction Peripheral Interface, Industrial USB Expansion Panel, Set-Top and Media Gateway, USB Test and Measurement Front Panel.
Compact USB Docking Station
USB2642T/ML fits compact docking stations that need both USB expansion and flash-media access. Its verified USB 2.0 high-speed hub function can connect downstream peripherals, while the integrated flash media card controller can expose supported storage to the host. The 48-QFN 7x7 mm package helps consolidate several interface functions, but high-speed USB routing, power budgeting, firmware configuration, and exposed-pad thermal management remain essential. Designers should confirm the exact supported media formats and port count from the manufacturer datasheet before finalizing the board architecture.
推荐
Embedded USB Storage Gateway
USB2642T/ML is appropriate for an embedded storage gateway where a host must access flash media while the system also manages USB peripherals. The integrated controller avoids a separate architecture for basic USB hub and media-reader functions, helping reduce board area in a 48-QFN surface-mount design. The design must provide stable 3.3 V-class power as required by the device, route USB differential pairs with controlled impedance, and configure I2C or SPI control correctly. The supplied data does not specify supported media formats, so firmware and hardware validation must be based on the complete datasheet.
推荐
Printer and Multifunction Peripheral Interface
USB2642T/ML can serve as the USB interface foundation for a printer or multifunction peripheral that needs USB device connectivity and removable flash-media support. Its USB 2.0 hub and flash controller combination allows a system architect to consolidate interface logic in one specialized controller IC. The device should be paired with a host processor capable of USB host or device control, depending on the system architecture, plus the required storage and power circuitry. Firmware must handle enumeration, media insertion, access control, and USB power states before production deployment.
推荐
Industrial USB Expansion Panel
USB2642T/ML is useful in an industrial USB expansion panel where one embedded host connection must support multiple USB functions and flash-media access. The integrated hub and media controller can simplify the physical design by reducing the number of dedicated interface ICs. For industrial equipment, the designer should still verify temperature limits, transient immunity, grounding, and ESD requirements that are not specified in the supplied snippets. A robust implementation should include controlled USB routing, local decoupling, firmware recovery behavior, and a thermal design that supports the QFN exposed pad.
推荐
Set-Top and Media Gateway
USB2642T/ML can support set-top boxes and media gateways that need to manage USB peripherals together with flash-based storage. The USB 2.0 high-speed hub function provides a path for external peripherals, while the flash media controller can reduce the need for a separate reader/writer implementation. Because the supplied sources do not enumerate supported media types or operating-temperature limits, product selection must be followed by a complete datasheet review. Firmware should include device enumeration, media-format filtering, write-protect handling, and safe removal behavior.
推荐
USB Test and Measurement Front Panel
USB2642T/ML may be used in a measurement front panel that needs a USB host connection for configuration, data transfer, and removable flash-media support. Its combination of hub and flash-controller functions can reduce the number of separate interface devices in a compact instrument. Signal-integrity discipline is especially important because USB high-speed signals and measurement circuitry may coexist on the same PCB. Use short controlled-impedance routes, maintain continuous reference planes, isolate noisy clocks and switching supplies, and validate the design against the manufacturer’s recommended layout and power-sequencing requirements.
推荐
推荐产品汇总
工程参考数据： USB2642T/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 | USB2642T-I/ML | USB2642/ML | USB2642T-I/ML-SEU |
|---|---|---|---|---|
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| USB Version | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
关键差异点
- Combines USB hub and flash-media controller functions （对比 USB2513B-AEZC)
- Supports multiple USB 2.0 speed classes （对比 USB2642/ML)
- Provides integrated control interfaces （对比 USB2642T-I/ML)
设计说明
Route USB high-speed differential pairs as controlled-impedance traces over a continuous reference plane, with the impedance value selected from the PCB stackup and the manufacturer’s USB guidance. Keep the traces short, match their length where practical, avoid vias and stubs where possible, and keep analog, clock, and switching-power paths spatially separated. Validate the completed board with differential impedance measurements and USB compliance testing before production.
The 48-QFN package requires a land pattern based on the official Microchip package drawing, including the exposed-pad geometry and thermal-via recommendation. Do not infer exposed-pad connection, pin numbering, or solder-mask clearance from a distributor description. Place decoupling capacitors close to the relevant supply pins and provide a low-impedance return path beneath the device according to the recommended stackup.
The supplied data confirms a QFN exposed pad but does not provide a thermal resistance or maximum power-dissipation figure. Treat exposed-pad area as a thermal design element: connect it through the manufacturer-recommended thermal-via pattern to a suitable copper or ground structure, minimize thermal bottlenecks, and verify junction temperature using the actual board copper, airflow, and enclosure. Any temperature calculation would be an estimate and is not provided here.
Do not assume that every USB2642-family ordering suffix is a drop-in replacement. The supplied comparison results identify USB2642T-I/ML, USB2642/ML, and USB2642T-I/ML-SEU as related devices, but they do not establish identical pinout, electrical limits, supported media, or firmware requirements. Confirm the exact suffix against the Microchip datasheet and confirm available stock with the distributor before substituting.
合规信息
RoHS compliance is stated in a supplied comparison result. The provided sources do not establish REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
