USB2502-HT - 2-Port USB 2.0 Hub Controller | Microchip
MPN: USB2502-HT ✓ Hoạt độngUSB2502-HT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho USB2502-HT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với USB2502-HT (cùng hình factor và footprint) — khác nhau ở USB Specification.
USB2502-H
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
USB2502-HD
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →USB2502-HT Thông số kỹ thuật
| 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 |
| Hộp | 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 |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân USB2502-HT 48-tqfp
Cấu hình chân cho USB2502-HT (48-tqfp gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho USB2502-HT.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
USB2502-HT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho USB2502-HT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | USB2502-H | USB2502-HD |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
Bảo phân biệt quan trọng
- Two downstream-facing USB 2.0 ports (vsUSB2513B-AEZC)
- Supports the full USB 2.0 speed classes (vsUSB2502-HD)
- Documented 48-TQFP controller package (vsUSB2502-H)
- USB 2.0 specification compliance stated by the manufacturer source (vsNo verified drop-in alternative)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
