LAN9353I/ML - 3-Port Managed Ethernet Switch | Microchip
MPN： LAN9353I/ML ✓ 啟用中LAN9353I/ML 概覽
An Ethernet switch is a network-semiconductor device that connects multiple physical network ports and manages frame transfer between them and an embedded host. The LAN9353I/ML belongs to the Ethernet interface IC category, where it combines copper and fiber connectivity, media-independent host interfaces, management functions, and PHY integration. This combination reduces the number of separate networking components required in industrial controllers, embedded computing modules, consumer equipment, and connected products.
The principal feature set includes three managed 10/100 Ethernet ports, integrated PHY functions, an I2C control interface, and flexible connectivity to a host processor through MII, RMII, Turbo MII, or dual RMII. IEEE 1588 timestamping provides support for time-sensitive network functions, while cable diagnostics help identify wiring faults. Programmable LEDs allow port activity and status to be presented locally, and low-power mode supports designs where sustained Ethernet activity is not always required.
The 64-QFN package is intended for compact embedded systems and offers a single highly integrated device instead of a discrete switch, several PHYs, an external management controller, and separate clocking or interface circuitry. MII provides the broadest parallel host interface, Turbo MII supports higher parallel throughput, and RMII or dual RMII can reduce host pin count when system routing and clocking permit. The supported fiber connection expands design options where longer links or greater noise immunity are required.
Typical applications include industrial automation equipment, embedded controllers, data-logging systems, connected test equipment, consumer appliances, and compact computing modules. These systems benefit from a managed switch with integrated diagnostics and host-interface flexibility, particularly where copper and fiber links may coexist. Exact electrical ratings, clock limits, operating-temperature limits, and management details must be confirmed in the manufacturer datasheet before final design release.
For PCB implementation, follow the manufacturer's 64-QFN land pattern, exposed-pad requirements, decoupling guidance, and high-speed interface-layout recommendations. Keep MII, RMII, and clock traces short and controlled, provide a clean low-noise supply network, and verify differential Ethernet routing against the datasheet reference layout. This page consolidates verified distributor data, switching features, sourcing information, and design guidance into one engineering-oriented reference.
直接替換替代品，適用於 LAN9353I/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LAN9353I/ML （相同外形與佔位） — 差異在於 Ethernet Speed, Host Interface, Management Interface, Number of Ports, Package.
LAN9353/PT
✅ 直接替換聯絡詢價
查看資料表 →LAN9353I/ML 最大額定值與電氣特性
| Product Type | Managed Ethernet switch |
| Number of Ports | 3 ports |
| Ethernet Speed | 10/100 Base-TX |
| Integrated PHY | Yes |
| Host Interface | MII, RMII, Turbo MII, and dual RMII |
| Management Interface | I2C |
| Fiber Connectivity | Supported |
| Timestamping | IEEE 1588 |
| Cable Diagnostics | Supported |
| Power Features | Low-power mode and power-on reset |
| Status Indication | Programmable LED indication |
| 封裝 | 64-QFN (9 mm x 9 mm) |
| 安裝類型 | Surface mount |
| Manufacturer | Microchip Technology |
| Ordering Code | LAN9353I/ML |
LAN9353I/ML 64-qfn (9 mm x 9 mm) 腳位配置指南
LAN9353I/ML（64-qfn (9 mm x 9 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： LAN9353I/ML.
請參閱 資料表 以查看完整腳位配置。
典型應用
LAN9353I/ML 適用於 6 應用s: Industrial Automation Controllers, Embedded Data Loggers, Connected Consumer Equipment, Networked Test and Measurement Equipment, Factory Monitoring and Control, Optical-Fiber Network Gateways.
Industrial Automation Controllers
The LAN9353I/ML fits industrial automation controllers that need three managed 10/100 Ethernet connections in a compact 64-QFN package. Integrated PHYs reduce the number of external network components, while the I2C interface allows a system controller to access switch functions. Cable diagnostics can support field troubleshooting, and IEEE 1588 timestamping is useful when connected equipment requires synchronized events. MII, RMII, Turbo MII, or dual RMII connectivity lets the device adapt to the processor architecture rather than forcing a wide parallel bus. The designer should still verify the exact operating-temperature range, supply limits, isolation strategy, and long-term qualification status before industrial deployment.
推薦
Embedded Data Loggers
The LAN9353I/ML is appropriate for compact data loggers that must combine Ethernet uplinks with embedded storage or processing. Three integrated 10/100 ports can connect service networks, local collection equipment, and maintenance access without requiring a larger modular switch. Cable diagnostics helps identify field wiring faults, while low-power mode and power-on reset support controlled operating cycles. The configurable LED indication provides visible port status for technicians. Engineers should confirm the data sheet's exact power-management behavior, register support, and boot requirements, because the verified distributor snippets confirm feature presence but do not provide detailed timing values.
推薦
Connected Consumer Equipment
The LAN9353I/ML can provide networked connectivity in consumer products requiring several 10/100 Ethernet ports and a compact board footprint. Its managed-switch architecture supports programmable LED indication for intuitive user feedback, while cable diagnostics assists installation and service. The host can use RMII to limit interface width or MII when a broader parallel interface is advantageous. Because the verified information identifies consumer designs as a target application but does not state the exact temperature grade or operating limits, qualification must follow the complete ordering information and manufacturer data sheet.
推薦
Networked Test and Measurement Equipment
The LAN9353I/ML is useful in test and measurement equipment requiring multiple wired network interfaces for instrument control, synchronization, and service access. IEEE 1588 timestamping provides a relevant capability for systems that coordinate measurements across distributed equipment. The integrated PHYs and selectable host interface reduce external component count, while programmable LEDs can expose link and activity status. The design team should verify synchronization accuracy limits, supported timestamp modes, thermal performance, and the exact MII or RMII timing requirements in the manufacturer documentation before clocking and system architecture are frozen.
推薦
Factory Monitoring and Control
The LAN9353I/ML can serve as the network hub in factory monitoring equipment that connects sensors, programmable logic controllers, and supervisory controllers over 10/100 Ethernet. Cable diagnostics is especially relevant in long installed cable runs, while managed switching and host programming support network integration. The I2C management interface allows the supervising processor to adjust supported settings, and the 64-QFN package supports compact controller boards. For safety-related or high-availability factory machinery, engineers must separately verify supported temperature range, isolation, electromagnetic behavior, lifecycle commitments, and any functional-safety requirements.
推薦
Optical-Fiber Network Gateways
The LAN9353I/ML suits gateway equipment that must bridge embedded Ethernet processing with both copper and optical-fiber links. The verified feature listing confirms optical-fiber support, while three managed 10/100 ports allow local devices, an upstream network, and a management connection to share one compact switch. MII, RMII, Turbo MII, and dual RMII options support different processor and routing constraints. Fiber transceivers and optical components are external to the LAN9353I/ML, so engineers must design suitable PHY optics, isolation, connectors, and power supplies based on the required link distance and application environment.
推薦
推薦產品摘要
工程參考資料，適用於 LAN9353I/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LAN9353 |
|---|---|---|
| Package | 64-QFN (9 mm x 9 mm) | 64-QFN (9 mm x 9 mm) |
| Brand | Microchip Technology | Microchip Technology |
| Product Type | Managed Ethernet switch | Managed Ethernet switch |
| Port Count | 3 ports | 3 ports |
| Ethernet Speed | 10/100 Base-TX | 10/100 Base-TX |
| Host Interfaces | MII, RMII, Turbo MII, and dual RMII | MII, RMII, Turbo MII, and dual RMII |
| Management Interface | I2C | I2C |
| IEEE 1588 Timestamping | Supported | Supported |
| Cable Diagnostics | Supported | Supported |
主要差異化特點
- Three integrated managed 10/100 ports (對比LAN9353)
- Broad host-interface support (對比LAN9353)
- Integrated management and diagnostics (對比LAN9353)
設計說明
Use the manufacturer's 64-QFN land pattern and exposed-pad geometry rather than constructing a footprint from the generic package dimensions. Verify the PCB stack-up, pad and mask definitions, via arrangement, and thermal-via pattern against the current Microchip design guidance. The verified data identifies the package as 64-QFN, 9 mm by 9 mm, but it does not provide land-pattern dimensions, so those values must come directly from the datasheet or CAD library.
Route MII, RMII, Turbo MII, and dual-RMII signals according to the interface selected for the final operating mode. Keep clock and data routing short, match lengths where the host-interface specification requires it, and provide continuous reference planes beneath high-speed signals. Avoid routing these buses across split power or ground-plane boundaries. Because some select-pin functions change with operating mode, finalize pin multiplexing and layer routing together.
Implement the supply network and decoupling according to the manufacturer datasheet, including the required bulk and high-frequency capacitors and their permitted tolerances. Do not infer capacitor values from generic Ethernet-switch designs because the supplied data does not state the LAN9353I/ML supply range or recommended capacitance. Measure startup behavior, power-on reset timing, and low-power transitions on the assembled board, especially when the host processor controls sequencing.
Do not substitute a generic LAN9353 suffix without checking grade, temperature range, lead-free status, package code, and ordering information. Nor should a cross-brand switch be assumed to be pin-compatible merely because it has a 64-QFN package. Verify all 64 assignments, exposed-pad requirements, management registers, PHY behavior, host timing, and operating-mode multiplexing against the exact replacement's manufacturer documentation.
合規資訊
The supplied verified snippets do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The I suffix indicates an industrial-related ordering option, but it must not be interpreted as evidence of AEC-Q100 qualification without an explicit manufacturer statement.
