LAN9512-JZX USB 2.0 Hub and 10/100 Ethernet Controller
部品番号: LAN9512-JZX ✓ 生産中LAN9512-JZX 概要
A USB hub controller is an interface IC that coordinates one upstream USB connection with multiple downstream peripherals. A 10/100 Ethernet controller adds network connectivity by combining a media-access controller with a physical-layer transceiver. The LAN9512-JZX combines these functions in one package, providing a compact USB-to-Ethernet and USB-to-USB connectivity solution for embedded systems, desktop and notebook computers, printers, game consoles, and docking stations.
The principal feature set includes Hi-Speed USB 2.0 operation, two integrated downstream USB 2.0 PHYs, an integrated upstream USB 2.0 PHY, and a 10/100 Ethernet data rate. Integrating these blocks reduces the number of external interface components required by a system. The integrated TAP controller and EEPROM controller also support the device's USB connectivity architecture, while the exposed-pad package provides a thermal and electrical land pattern intended for careful PCB layout.
The device is categorized as a USB interface IC and Ethernet bridge. Unlike a discrete implementation using separate USB hub and Ethernet controller ICs, the LAN9512-JZX consolidates the USB and 10/100 network interfaces into one 3.3 V controller. Its 64-QFN package requires the board-level layout practices described in the manufacturer's LAN9512/LAN9513/LAN9514 layout guidance, including controlled copper and thermal-pad connections.
Typical applications include USB-to-Ethernet adapters, multifunction docking stations, embedded Linux equipment, printers, game consoles, and compact desktop or notebook connectivity designs. In each case, the controller provides a two-port USB 2.0 hub and 10/100 Ethernet connectivity while reducing board area relative to a multi-chip implementation. The 100 Mb/s Ethernet rate is appropriate for management traffic, network printing, configuration access, and conventional embedded networking rather than modern multi-gigabit systems.
PCB implementation is the primary design consideration. Follow the manufacturer's LAN9512 layout guidelines, provide the required USB and Ethernet routing geometry, terminate Ethernet differential pairs consistently, and connect the exposed pad to the intended ground and thermal structure. Confirm crystal, magnetics, decoupling, and passive-component requirements against the manufacturer datasheet and application guidance before releasing a PCB.
This product page combines the verified manufacturer and distributor data with application analysis, design guidance, and a strict assessment of available drop-in alternatives. The alternative analysis intentionally excludes packaging-only variants and functionally similar controllers that are not verified as pin-to-pin compatible.
ドロップイン代替品: LAN9512-JZX — 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。
LAN9512I-JZX
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LAN9512-JZX 仕様
| Product Type | USB 2.0 hub and 10/100 Ethernet controller |
| USB Version | USB 2.0 |
| Upstream USB PHY Count | 1 |
| Downstream USB PHY Count | 2 |
| Ethernet Speed | 10 Mb/s or 100 Mb/s |
| 電源電圧 | 3.3 V |
| Integrated 10/100 Ethernet PHY | Yes |
| Integrated 10/100 Ethernet Controller | Yes |
| Integrated TAP Controller | Yes |
| Integrated EEPROM Controller | Yes |
| パッケージ | 64-QFN exposed-pad, 9 mm x 9 mm |
| 実装タイプ | Surface mount |
| Packaging | Tray |
LAN9512-JZX 64-qfn exposed-pad, 9 mm x 9 mm ピン配置ガイド
LAN9512-JZX (64-qfn exposed-pad, 9 mm x 9 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: LAN9512-JZX.
詳細は データシート をご参照ください。
主な用途
LAN9512-JZX の用途: 6 件s: USB-to-Ethernet Adapter, Compact USB Docking Station, Embedded Networked Control System, Networked Printer Interface, Game Console Peripheral Connectivity, Desktop and Notebook Connectivity.
USB-to-Ethernet Adapter
The LAN9512-JZX fits a compact USB-to-Ethernet adapter because it integrates one upstream USB 2.0 PHY, a 10/100 Ethernet PHY and controller, and two downstream USB 2.0 PHYs in one 3.3 V package. The upstream USB connection carries data to the host, while the Ethernet side supports 10 Mb/s or 100 Mb/s network links. The two downstream PHYs can also expose peripheral ports without requiring a separate USB hub IC. This consolidation is valuable where board area and BOM complexity matter. The principal trade-off is that Ethernet is limited to 100 Mb/s, so high-speed file transfer, video, and other bandwidth-intensive traffic should remain on the USB path. Designers should follow Microchip's AN 19.20 layout guidance for USB routing, Ethernet pairs, grounding, and exposed-pad implementation.
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Compact USB Docking Station
A docking station can use the LAN9512-JZX to consolidate USB hub and Fast Ethernet functions on a small board. Its two integrated downstream USB 2.0 PHYs support two USB peripheral connections, while the 10/100 Ethernet controller provides network access through the same device. This arrangement reduces the number of separate USB and Ethernet interface ICs compared with a discrete design. The 3.3 V architecture and 64-QFN exposed-pad package suit dense portable accessories, although thermal and EMC performance depend on the complete board implementation. Ethernet magnetics, transient protection, USB protection, and connector placement must be designed around the controller layout. Microchip's family layout guideline is the controlling reference for trace geometry and placement around the exposed pad.
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Embedded Networked Control System
The LAN9512-JZX can add both USB peripheral connectivity and 10/100 Ethernet networking to an embedded control platform. A system architect can use one upstream USB port to connect the controller to a host processor, two downstream PHYs for local peripherals, and the Ethernet interface for configuration, telemetry, or remote management. The 100 Mb/s maximum is generally sufficient for supervisory traffic but does not replace gigabit networking in high-throughput industrial systems. Firmware, EEPROM emulation, and host-driver support must be evaluated for the target processor because the controller's hardware integration does not eliminate software requirements. The compact QFN-64 footprint also requires thermal-aware exposed-pad layout and properly designed USB and Ethernet routing.
おすすめ
Networked Printer Interface
The LAN9512-JZX is suited to printers and peripheral equipment that require both USB device connectivity and a 10/100 Ethernet network connection. The upstream USB PHY supports attachment to an internal USB host or embedded controller, while the Ethernet PHY and MAC provide a conventional Fast Ethernet port for printing and device management. Two downstream USB 2.0 PHYs can support local service or peripheral connections. This consolidation can reduce connector-related PCB area compared with separate hub and network interface devices. For a printer design, verify USB host support and the required printer-class or network-driver behavior in the target operating system. Ethernet magnetic isolation, cable protection, and differential-pair routing remain essential for reliable field operation.
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Game Console Peripheral Connectivity
The manufacturer identifies game consoles among the intended applications for the LAN9512/LAN9512i family. The LAN9512-JZX can combine a Hi-Speed USB 2.0 hub with 10/100 Ethernet connectivity in a compact accessory or console peripheral design. Two downstream USB PHYs support external devices, while the Ethernet side enables network configuration, online services, or local management when the host platform provides the necessary drivers and protocol support. Because 100 Mb/s is below modern gigabit Ethernet speeds, the network interface is better suited to management traffic than bulk streaming. Console product requirements should also be checked for USB host or device role, remote wake, boot-loader support, and lifecycle expectations before the controller is selected.
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Desktop and Notebook Connectivity
The LAN9512-JZX can support legacy desktop and notebook connectivity designs requiring an integrated two-port USB 2.0 hub and 10/100 Ethernet interface. Its single upstream USB PHY allows the entire network and peripheral function set to appear to the host as one USB peripheral, simplifying some host-side connections compared with separate wired Ethernet and USB adapters. The integration supports compact external adapters, docking products, and system connectivity blocks. Practical implementation still requires correct USB impedance routing, Ethernet magnetics, connector protection, and software support for the target operating system. The 100 Mb/s Ethernet ceiling is the principal limitation for contemporary high-speed networks, and legacy operating-system driver availability should be checked before using this controller in new desktop designs.
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おすすめ製品の概要
エンジニアリング参考データ: LAN9512-JZX — 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 | LAN9512I-JZX |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 64-QFN exposed-pad, 9 mm x 9 mm | 64-QFN exposed-pad family package |
| Product Type | USB 2.0 hub and 10/100 Ethernet controller | LAN9512/LAN9512i family USB 2.0 hub and 10/100 Ethernet controller |
| USB Version | USB 2.0 | USB 2.0 |
| Ethernet Speed | 10 Mb/s or 100 Mb/s | 10/100 Ethernet family function |
| Integrated Ethernet PHY | Yes | Yes |
主な差別化要因
- Combines two USB 2.0 ports and Fast Ethernet in one controller （vs Discrete USB hub plus Ethernet controller architecture)
- Uses the same-family LAN9512I-JZX alternative path （vs LAN9512I-JZX)
- Provides a manufacturer-defined layout path for a compact interface design （vs Unguided discrete USB and Ethernet implementation)
設計ノート
Apply Microchip application note AN 19.20 LAN9512/LAN9513/LAN9514 Layout Guidelines before routing the PCB. Keep USB differential traces length-matched and continuous over the same reference plane, preserve the specified Ethernet differential geometry, and avoid placing disruptive signals beneath the relevant pairs. The 64-QFN exposed pad requires the manufacturer-recommended via and copper arrangement so that thermal, EMC, and signal-integrity performance are not compromised.
Place decoupling and required support components close to their associated LAN9512-JZX pins using the manufacturer data sheet and reference-design BOM as the authority. The verified reference design includes MIC2026-1BM, J0011D01B, Rohm resistors, and Yageo 9C06031A1202FKHFT. Do not substitute parts solely by package size; confirm capacitance, tolerance, voltage rating, magnetic characteristics, and layout compatibility before releasing production BOMs.
Do not treat the LAN9514-JZX, LAN9514I-JZX, USB2517I-JZX, or LAN9500A-ABZJ as drop-in substitutes merely because search results place them in the same product neighborhood. A valid replacement must match the footprint, pin functions, electrical limits, clock configuration, firmware support, and USB host requirements. The verified equivalent-parts result supports LAN9512I-JZX most directly, so use that candidate first and perform a complete manufacturer-level review.
コンプライアンス情報
The supplied manufacturer and distributor snippets do not explicitly provide the compliance declarations for the exact LAN9512-JZX ordering code. AEC-Q100 is reported as unknown because the permitted not_applicable value requires explicit evidence that automotive qualification does not apply.
