USB2503-HZE - USB 2.0 3-Port Hub Controller | Microchip
部品番号: USB2503-HZE ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.8864 | $1.89 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
USB2503-HZE 概要
A USB hub controller is an interface integrated circuit that manages traffic between one upstream USB connection and multiple downstream ports. It belongs to the USB interface-controller family and the broader semiconductor and connectivity hierarchy. By handling USB enumeration, port attach and detach events, and downstream power-management coordination, the controller reduces the amount of host software and external glue logic required in a USB hub design.
The verified product information identifies the USB2503 as a three-port hub controller compliant with USB 2.0. The manufacturer description states that the controller does not require firmware development, simplifying implementation compared with solutions that need device-specific firmware or a substantial software stack. Downstream ports can operate at 1.5 Mb/s low speed and at the other USB speed modes supported by the USB 2.0 specification when connected to an appropriate high-speed host.
The HZE suffix identifies the ordered package variant associated with the supplied datasheet and distributor records. The device is offered in a 48-QFN (7x7 mm) surface-mount package, making it suitable for compact USB hub equipment where the connector footprint and board area are constrained. The package requires careful placement of power, USB data, configuration, clock, and exposed-pad connections according to the manufacturer pinout and layout guidance.
Typical applications include USB hubs, docking stations, desktop and laptop peripherals, embedded USB expansion systems, industrial equipment, test and measurement products, and host systems requiring additional USB connectivity. The controller can also support designs that need automatic connection to a USB host without developing a dedicated USB hub firmware image.
For implementation, confirm the exact USB operating modes, electrical limits, regulator requirements, crystal or clock configuration, port-power requirements, and exposed-pad layout against the USB2503/USB2503A manufacturer datasheet. When comparing a replacement, verify that the candidate uses the same 48-QFN footprint, pin functions, voltage requirements, USB electrical behavior, and intended upstream/downstream configuration rather than relying only on the apparent USB 2.0 hub function.
This page consolidates the verified USB2503-HZE product description, distributor references, datasheet links, package information, pricing references, and engineering selection guidance. It is intended to help designers identify whether the controller fits a USB hub design and to locate the manufacturer documentation needed for a final, board-specific engineering review.
ドロップイン代替品: USB2503-HZE — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
USB2503A-HZE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
USB2503A-HZE-R
✅ ドロップイン📋 参考代替品（カタログ未掲載）
USB2503-HZE 仕様
| Product Type | USB 2.0 hub controller |
| Number of Downstream Ports | 3 ports |
| USB Specification | USB 2.0 compliant |
| Low-Speed Support | 1.5 Mb/s |
| Full-Speed Support | 12 Mb/s |
| High-Speed Support | 480 Mb/s |
| Upstream Port | 1 upstream USB connection |
| Firmware Requirement | No firmware development required |
| パッケージ | 48-QFN (7x7 mm) |
| 実装タイプ | Surface mount |
| USB Host Attachment | Full-speed hub or full-/high-speed hub |
| External Pull-Up Resistors | 10 kOhm recommended for SDA/SMBDATA and SCL/SMBCLK/CFG_SELO |
| Dynamic Power Switching | Supported through SELF_PWR monitoring |
USB2503-HZE 48-qfn (7x7 mm) ピン配置ガイド
USB2503-HZE (48-qfn (7x7 mm) パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: USB2503-HZE.
詳細は データシート をご参照ください。
主な用途
USB2503-HZE の用途: 6 件s: Compact USB Hub, Laptop Docking Station, Industrial USB Expansion, Desktop Peripheral Hub, Test and Measurement Instrument, Embedded USB Expansion Board.
Compact USB Hub
The USB2503-HZE fits a compact USB hub that needs one upstream connection and three downstream USB 2.0 ports. Its no-firmware-development characteristic can simplify the controller portion of the design, while the 48-QFN (7x7 mm) package helps preserve board area around connectors and power components. The hub still needs verified USB data routing, downstream power management, ESD protection, and compliance testing. At the software layer, the design should validate enumeration, suspend, resume, over-current behavior, and device compatibility across low-speed, full-speed, and high-speed devices.
おすすめ
Laptop Docking Station
A docking station can use the USB2503-HZE to provide a controlled three-port USB expansion block from a single upstream host connection. The device is useful where a docking station needs standardized USB 2.0 behavior without a custom hub firmware image. Designers should map the upstream and downstream connectors, validate cable lengths, provide adequate port-current capacity, and isolate noisy power rails from USB data. The final enclosure and connector arrangement may determine whether the 48-QFN package offers enough routing flexibility.
おすすめ
Industrial USB Expansion
Industrial equipment can use the USB2503-HZE when a control enclosure requires multiple USB service or peripheral ports from one host interface. The controller provides a defined USB hub function and avoids requiring firmware development, which can reduce the embedded software burden. Industrial implementation should account for ESD and surge protection, cable transients, grounding, port-power budgets, enclosure temperature, and long-term availability. Because the verified data does not provide a complete electrical-limit table, engineers should use the manufacturer datasheet for voltage, current, timing, and environmental requirements.
おすすめ
Desktop Peripheral Hub
The USB2503-HZE can serve as the hub controller in a desktop peripheral hub designed to connect keyboards, storage, communications, or other USB devices to a host computer. Its three downstream ports provide a practical expansion point while the upstream port maintains a single host-facing interface. Placement should prioritize short, controlled USB differential traces and protection close to the external connectors. The board should also implement the required power switches and verify that each port remains within the current and thermal limits established by the final system architecture.
おすすめ
Test and Measurement Instrument
A test instrument can use the USB2503-HZE to expose multiple USB service or peripheral connections while maintaining a single upstream interface. The no-firmware-development feature is valuable when the instrument already has a host controller and the hub function must be added with minimal additional software effort. Designers should separate USB data and power paths, provide robust connector protection, and validate compatibility with the instrument's operating-system requirements. The final enclosure may affect EMI and ESD performance, so qualification testing remains essential.
おすすめ
Embedded USB Expansion Board
The USB2503-HZE is suitable for an embedded USB expansion board that connects a processor or host controller to several external USB ports. The 48-QFN (7x7 mm) package supports compact construction, while the three-port hub architecture simplifies system-level expansion. Because the controller is primarily a USB interface component, the board also needs its own power regulation, protection, connectors, and signal-integrity layout. Verify the exact pinout and exposed-pad connection from the manufacturer datasheet before releasing the PCB footprint.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: USB2503-HZE — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | USB2503A-HZE | USB2503A-HZE-R |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) |
主な差別化要因
- Three downstream ports with one upstream USB connection （vs USB2503A-HZE)
- No custom firmware development required （vs USB2503A-HZE)
- USB 2.0 hub interface in a compact 48-QFN package （vs USB2503A-HZE-R)
- Explicit SELF_PWR dynamic power-switching support （vs USB2503A-HZE)
設計ノート
Implement the USB hub power architecture around the verified SELF_PWR and dynamic-power-switching behavior. Confirm whether each downstream port is bus-powered or supplied by a local power source, and ensure the protection, switching, and over-current responses meet the system requirements. Do not use the SELF_PWR description alone as a substitute for the complete electrical and power-budget tables in the manufacturer datasheet.
Route upstream and downstream USB differential pairs as controlled, matched-length signal paths and keep them away from switching nodes and high-current return paths. Place connector protection and required pull-up components close to the relevant USB or configuration pins. The verified excerpt calls out 10 kOhm pull-ups on SDA/SMBDATA and SCL/SMBCLK/CFG_SELO; follow the complete datasheet schematic and layout guidance before finalizing placement.
Do not treat USB2503A-HZE or another family member as a confirmed drop-in substitute solely because it has a similar package name or USB hub description. Compare the exact 48-QFN pinout, exposed pad, power rails, configuration pins, clocking, USB electrical parameters, and downstream-port behavior. Also verify that the manufacturer document corresponds to the exact ordered MPN and package suffix.
Thermal performance depends on the 48-QFN exposed-pad layout, copper area, board stack-up, nearby heat sources, and the power delivered through the hub's supply and downstream power paths. The verified data does not provide a thermal-resistance or maximum-power specification, so use the manufacturer package information and application guidance rather than assuming adequate cooling from the package name alone.
コンプライアンス情報
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-mineral status. AEC-Q100 is not applicable to this general-purpose USB interface IC unless a separate automotive qualification is specifically identified.
