LAN9313-NZW - 3-Port 10/100 Ethernet Switch | Microchip
料号： LAN9313-NZW ✓ 量产中LAN9313-NZW 概述
An Ethernet switch is a network-semiconductor category that forwards Ethernet frames between connected ports while supporting full- and half-duplex operation. Within the networking hierarchy, the LAN9313-NZW is an Ethernet switch controller with an embedded Ethernet PHY and Media Independent Interface, bridging an embedded processor or host processor to copper or fiber Ethernet networks. It also supports IEEE 802.1D and 802.1Q network-management protocol specifications.
Three configurable general-purpose input/output pins are available for integration with control, status, or interrupt functions beyond the primary Ethernet interface. The device combines switching, physical-layer, and host-interface functions in one package, reducing the need for separate Ethernet PHY components when the parallel MII architecture is appropriate for the host processor.
The LAN9313-NZW architecture integrates three 10/100 Ethernet ports with a parallel MII connection to the host. This parallel interface suits embedded systems that have a dedicated controller bus rather than a USB or RGMII interface. Its 128-XVTQFP package provides a compact surface-mount implementation for space-constrained equipment, although exact pin assignments and exposed-pad thermal details must be confirmed in DS00002288A before layout.
Typical uses include industrial control equipment, embedded gateways, factory networking modules, communications appliances, and systems requiring both 10BASE-T and 100BASE-TX ports. A 100BASE-FX-capable implementation can also serve fiber-based network interfaces when the board includes suitable optical magnetics and the required external circuitry.
The main design consideration is the parallel MII interface. Its wiring, signal-integrity requirements, and host-bus compatibility must be evaluated against the processor used in the design. Decoupling, exposed-pad connection, clocking, magnetics, and LED interfaces should be implemented using the guidance in the manufacturer datasheet and LAN9313 reference-design schematic rather than inferred from general Ethernet practice.
This product page consolidates the verified manufacturer and distributor information, identifies package-related documentation gaps, compares the documented LAN9313 family variant, and provides selection guidance that helps distinguish a genuine drop-in option from a merely similar Ethernet controller.
直接替换替代料： LAN9313-NZW ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LAN9313I-NZW-TR
✅ 直接替换📋 参考替代料（不在目录中）
LAN9313-NZW 最大额定值与电气特性
| Product Type | Managed Ethernet switch controller |
| Number of Ethernet Ports | 3 ports |
| Ethernet Speed | 10/100 Mb/s |
| Copper Ethernet Support | 10BASE-T and 100BASE-TX |
| Fiber Ethernet Support | 100BASE-FX |
| Host Interface | Parallel MII |
| Managed Switch Protocol Support | IEEE 802.1D and IEEE 802.1Q |
| Ethernet Protocol Support | IEEE 802.3 full/half-duplex 10BASE-T and 100BASE-TX |
| General-Purpose I/O Count | 12 pins |
| GPIO Functions | Input, push-pull output, and open-drain output |
| GPIO Interrupt Support | Configurable polarity |
| 封装 | 128-XVTQFP (14 mm x 14 mm) |
| 安装类型 | Surface mount |
| Exposed Thermal Pad | Present |
| Maximum Data Rate | 100 Mb/s |
LAN9313-NZW 128-xvtqfp (14 mm x 14 mm) 引脚配置指南
LAN9313-NZW（128-xvtqfp (14 mm x 14 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： LAN9313-NZW.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LAN9313-NZW 适用于 6 应用s: Industrial Ethernet Control Equipment, Embedded Network Gateway, Factory Automation Communications Module, Fiber-to-Copper Network Bridge, Communications Appliance, Networked Test and Measurement Instrument.
Industrial Ethernet Control Equipment
The LAN9313-NZW fits industrial controllers that need three integrated 10/100 Ethernet ports for local sensors, service interfaces, and plant-network connectivity. Its 10BASE-T and 100BASE-TX support, combined with IEEE 802.1D and 802.1Q management support documented in DS00002288A, allows a single switch controller to serve multiple copper links. The parallel MII interface also suits legacy embedded processors with a dedicated Ethernet bus. Before release, engineers must verify the exact temperature grade, electrical limits, magnetics, isolation requirements, and exposed-pad layout from the manufacturer documentation.
推荐
Embedded Network Gateway
The LAN9313-NZW is suitable for an embedded gateway that must consolidate several 10/100-Mb/s links into a host processor. Its three ports can connect local equipment, an uplink, and a service interface without requiring three stand-alone Ethernet PHYs. IEEE 802.3 half- and full-duplex support provides a standards-based foundation, while the parallel MII interface permits a host processor with suitable bus bandwidth to control traffic. The design should validate MII timing, PHY isolation, LED behavior, bulk-capacitor placement, and thermal performance against the verified reference design and DS00002288A.
推荐
Factory Automation Communications Module
A compact communications module can use the LAN9313-NZW to provide three managed 10/100 Ethernet endpoints for programmable logic, remote I/O, and supervisory equipment. The 128-XVTQFP package saves board area relative to three discrete network interfaces, while the managed-switch protocol support documented by Microchip enables network configuration for industrial segmentation. System integrators should confirm that the host processor supports the parallel MII timing and that the design meets the isolation, surge, environmental, and grounding requirements of the target installation. The exact LAN9313-NZW temperature range remains to be verified from the datasheet.
推荐
Fiber-to-Copper Network Bridge
The LAN9313-NZW supports 100BASE-FX alongside 10BASE-T and 100BASE-TX, making it relevant to network bridges that combine a fiber uplink with copper service ports. The three-port architecture can reduce the number of external switch components in an embedded communications appliance. Implementation still requires suitable fiber magnetics or optical components, correct 100BASE-FX line-side circuitry, and verification of the reference design. According to the verified manufacturer material, the device supports IEEE 802.3 Ethernet operation, but board engineers must use DS00002288A for the complete electrical and application schematic.
推荐
Communications Appliance
The LAN9313-NZW is appropriate for communications appliances that aggregate multiple legacy 10/100 Ethernet links into a host processor. Its integrated switch and PHY functions simplify the topology compared with using several discrete interface devices, while the MII interface provides a direct path to a compatible embedded controller. Product developers should evaluate bus timing, maximum frame handling, management configuration, and host-driver requirements. PCB implementation should also follow the verified reference-design capacitor-placement guidance and the exposed-pad connection requirements in the manufacturer documentation.
推荐
Networked Test and Measurement Instrument
A test or measurement instrument can use the LAN9313-NZW to provide three managed Ethernet connections for a control network, service laptop, and instrument cluster. Support for 10BASE-T and 100BASE-TX permits compatibility with older laboratory infrastructure, while the managed-switch capabilities support segmentation and controlled traffic handling. The parallel MII interface is most appropriate when the instrument controller has a suitable dedicated Ethernet interface. Design validation should cover host timing, clock requirements, port LEDs, thermal dissipation, connector magnetics, and the mechanical clearance around the 14 mm by 14 mm TQFP package.
推荐
推荐产品汇总
工程参考数据： LAN9313-NZW ——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 | LAN9313I-NZW-TR |
|---|---|---|
| Package | 128-XVTQFP (14 mm x 14 mm) | 128-XVTQFP (14 mm x 14 mm) |
| Brand | Microchip Technology | Microchip Technology |
| Ethernet Port Count | 3 ports | 3 ports |
| Supported Ethernet Speeds | 10/100 Mb/s | 10/100 Mb/s |
| Host Interface | Parallel MII | Parallel MII |
| Copper PHY Support | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX |
| Fiber PHY Support | 100BASE-FX | 100BASE-FX |
| Management Protocol Support | IEEE 802.1D and IEEE 802.1Q | IEEE 802.1D and IEEE 802.1Q |
| General-Purpose I/O | 12 configurable GPIO pins | 12 configurable GPIO pins |
关键差异点
- Integrated three-port managed Ethernet switching （对比 LAN8742A-CZ)
- Parallel MII host connectivity （对比 LAN8720A-CP)
- Copper and fiber PHY coverage （对比 LAN8742A-CZ)
设计说明
Follow the verified LAN9313 reference-design schematic for bulk-capacitor placement. The supplied schematic specifically identifies low-ESR capacitors at LAN9313 power pins 120, 93, 74, 117, 125, 121, and 107. Place the required bulk and high-frequency decoupling components close to their assigned rails and pins; do not substitute one large capacitor for the distributed network shown in the reference design.
Separate the MII interface from switching and PHY power paths exactly as directed by DS00002288A. The verified reference schematic identifies separate 3.3 V rail labels and multiple bulk-capacitor locations, indicating that rail assignment and decoupling are important to the implementation. Confirm the datasheet's exact operating voltage, current limits, capacitor values, voltage ratings, and startup sequence before schematic release rather than relying on generic 3.3 V Ethernet assumptions.
Reserve the complete 128-XVTQFP footprint and its exposed thermal pad, then verify pad geometry and pin numbering against Microchip package drawings. Because the supplied evidence establishes a 14 mm by 14 mm body but does not provide a complete verified pin transcription, the CAD symbol and PCB library must be checked against DS00002288A. Incorrect sequence numbers or an omitted thermal connection can prevent assembly or impair heat transfer.
Use the manufacturer-recommended MII clock, data, and control topology and confirm timing margins with the selected host processor. Parallel MII routing is sensitive to skew, loading, and return-path discontinuities, so avoid unnecessary splits, keep clock distribution topology controlled, and follow the reference-design layer and via guidance. The retrieved data does not provide trace-length limits or rise-time requirements, so those values must be obtained from the full datasheet and application documentation.
合规信息
The supplied verified excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. IEEE 802.3, IEEE 802.1D, and IEEE 802.1Q are protocol references, not product compliance certifications.
