USB2502-HT - 2-Port USB 2.0 Hub Controller | Microchip
料号： USB2502-HT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.0002 | $1.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
USB2502-HT 概述
A USB hub controller is an interface integrated circuit that manages traffic between an upstream host and multiple downstream ports. In the USB hierarchy, it belongs to the USB interface-controller class, the broader interface-IC category, and ultimately the semiconductor device hierarchy. The USB2502 is intended for computers, peripherals, embedded systems, industrial equipment, and other USB 2.0 host platforms that require downstream-port expansion.
Key verified features include two downstream-facing USB ports, USB 2.0 specification compliance, operation with a high-speed host, and support for low-, full-, and high-speed devices. The Microchip data-sheet result identifies the device as a fully specification-compliant USB 2.0 2-port hub and states compliance with Universal Serial Bus Specification Revision 2.0 dated April 27, 2000, including the listed 12/7/2000 and 5/28/2002 errata. The verified distributor listing identifies the physical part as a 48-TQFP USB interface IC.
The controller separates upstream host traffic from the two downstream links, allowing peripheral devices such as keyboards, storage devices, network adapters, and human-interface devices to share one USB host port. System designers must provide the required USB transceiver, clock, decoupling, connectivity, and external passives described by the manufacturer data sheet. The controller itself is not a power-management IC and has no SOA data in the supplied sources.
Typical uses include two-port desktop hubs, embedded USB expansion, peripheral connection panels, test equipment, and industrial USB interfaces. For a new design, validate the host controller, connector overmolding, cable lengths, enumeration behavior, power budgeting, and all USB electrical and timing requirements. The supplied evidence identifies the USB2502 family, but does not provide a complete pin-by-pin pinout or every operating limit, so those details remain to be verified from the manufacturer documentation.
This product page consolidates the verified manufacturer description, distributor package information, source links, and engineering-use guidance for USB2502-HT selection. It intentionally distinguishes verified facts from missing electrical details instead of estimating unspecified values.
直接替换替代料： USB2502-HT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
USB2502-H
✅ 直接替换📋 参考替代料（不在目录中）
USB2502-HD
✅ 直接替换✓ 有现货
$1.5736 / 个
查看数据手册 →USB2502-HT 规格参数
| Device Type | USB 2.0 hub controller |
| Number of Downstream Ports | 2 ports |
| USB Specification | USB 2.0 |
| Upstream Host Compatibility | High-speed host |
| Low-Speed Support | 1.5 Mb/s |
| Full-Speed Support | 12 Mb/s |
| High-Speed Support | 480 Mb/s |
| Downstream Port Direction | Downstream-facing |
| 封装 | 48-TQFP |
| Manufacturer | Microchip Technology |
| Maximum USB Data Rate | 480 Mb/s |
| Interface Category | USB interface IC |
| Datasheet Compliance Reference | Universal Serial Bus Specification Revision 2.0 |
| 安装类型 | Surface mount |
USB2502-HT 48-tqfp 引脚配置指南
USB2502-HT（48-tqfp 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： USB2502-HT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2502-HT 适用于 6 应用s: Desktop USB 2.0 Hub, Embedded USB Expansion, Peripheral Connection Panel, Test and Measurement Instrument, Industrial USB Gateway, Legacy PC USB Port Expansion.
Desktop USB 2.0 Hub
USB2502-HT fits a desktop hub that expands one upstream USB host connection into two downstream-facing ports. The verified USB 2.0 capability supports low-speed 1.5 Mb/s, full-speed 12 Mb/s, and high-speed 480 Mb/s devices, allowing keyboards, storage peripherals, network adapters, and other compatible devices to share the host connection. The controller handles hub traffic, while the system designer must provide connectors, protection, power distribution, and the external network required by the manufacturer data sheet. Because operating voltage, current limits, and complete pinout details were not supplied, they should be verified before selecting power components or releasing a PCB layout.
推荐
Embedded USB Expansion
USB2502-HT can be used when an embedded controller has one USB host port but the enclosure requires two external peripheral connections. Its two downstream-facing ports support the three USB 2.0 speed classes identified by Microchip: 1.5 Mb/s, 12 Mb/s, and 480 Mb/s. This makes the hub controller useful for industrial control panels, test equipment, and gateway products that need local USB service access. The verified snippets do not specify the controller's supply voltage or transceiver arrangement, so the complete data sheet and reference design must be reviewed for clocking, decoupling, impedance, protection, and exposed-pad implementation.
推荐
Peripheral Connection Panel
A peripheral connection panel can place one upstream USB connection on a chassis and expose two downstream ports to external keyboards, storage devices, or communications adapters. USB2502-HT is relevant where the design needs USB 2.0 traffic management rather than a simple power-only hub. Its verified support for low-, full-, and high-speed devices allows the same controller family to accommodate both low-bandwidth peripherals and 480 Mb/s devices. Practical implementation still requires connector and cable design, ESD protection, power budgeting, and validation of enumeration and suspend behavior using the manufacturer documentation.
推荐
Test and Measurement Instrument
USB2502-HT can provide two downstream USB connections in a test instrument that needs to bring control, logging, or service devices into a host computer. The 1.5 Mb/s low-speed and 12 Mb/s full-speed support covers simple control peripherals, while 480 Mb/s high-speed operation suits storage or higher-bandwidth test accessories. Because the supplied sources do not identify the controller's operating limits or application reference circuit, the instrument power architecture and isolation strategy should be independently verified. Do not treat the hub controller as a complete USB interface solution without the required external support circuitry.
推荐
Industrial USB Gateway
USB2502-HT can add two downstream USB ports to an industrial gateway that aggregates service logs, configuration adapters, or field-upgrade devices. The controller's two-port USB 2.0 architecture is useful when the upstream host is a high-speed USB interface and the downstream devices span multiple speed classes. A production design should include surge and ESD protection, controlled bus-power distribution, connector strain relief, and firmware enumeration handling. The available verified evidence confirms the USB 2.0 port capability and 48-TQFP class but does not provide industrial temperature, EMC, or regulatory status, so those claims remain unverified.
推荐
Legacy PC USB Port Expansion
USB2502-HT can expand a legacy PC or embedded host with one upstream USB connection into two downstream ports, reducing the need for separate internal hub hardware. Its verified support for 480 Mb/s high-speed operation is appropriate for storage peripherals, while 12 Mb/s full-speed operation covers many keyboards, mice, and control devices. Compatibility with the host operating system, BIOS or embedded USB stack, and downstream power budget must be tested at the system level. The supplied data does not establish operating-system support, so that limitation should not be assumed.
推荐
推荐产品汇总
工程参考数据： USB2502-HT ——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 | USB2502-H | USB2502-HD |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
关键差异点
- Two downstream-facing USB 2.0 ports （对比 USB2513B-AEZC)
- Supports the full USB 2.0 speed classes （对比 USB2502-HD)
- Documented 48-TQFP controller package （对比 USB2502-H)
- USB 2.0 specification compliance stated by the manufacturer source （对比 No verified drop-in alternative)
设计说明
Validate the complete USB power architecture before layout. The supplied evidence confirms USB 2.0 data support and a 48-TQFP package but does not state USB2502-HT operating voltage, hub-current consumption, or downstream power limits. Determine those values from the official Microchip data sheet, then size the upstream supply and downstream power switches for the worst-case connected-device load. Include protection for over-current, short circuits, and cable transients rather than assuming that the controller manages downstream power.
Use the official USB2502 package drawing and pinout before placing the 48-TQFP device. The verified snippets do not provide the complete pin-number-to-function mapping, exposed-pad requirements, or land-pattern dimensions. Confirm whether the package has an exposed thermal pad and whether that pad is electrically connected to a supply or ground net. Keep high-speed USB differential routing over a continuous reference plane, use the manufacturer's recommended impedance and spacing guidance, and avoid placing noisy power or clock routes beneath the data pairs.
Treat each downstream link as a point-to-point USB channel from the controller through its required transceiver circuitry to the connector. Verify trace impedance, differential pair length matching, connector transitions, ESD protection, and return-path continuity with the complete reference design. USB 2.0 high-speed operation is verified at 480 Mb/s, so do not substitute generic slow-speed routing rules. Validate enumeration, suspend, resume, hot-plug behavior, and full-speed or low-speed fallback with the intended peripherals.
Do not substitute a USB2513B-AEZC or another USB interface IC solely because both products appear in USB-related component listings. A valid replacement requires the same 48-TQFP footprint, compatible pin functions, matching electrical limits, and equivalent USB behavior. The supplied alternatives data does not verify such compatibility, so any redesign should begin with a manufacturer datasheet comparison and a prototype validation rather than a PCB-only part swap.
合规信息
The supplied verified results do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification status. AEC-Q100 is treated as not applicable because this is presented as a USB interface controller, but the absence of a qualification claim should not be interpreted as a full regulatory determination.
