LAN9353T/ML - 3-Port 10/100 Managed Ethernet Switch | Microchip
MPN： LAN9353T/ML ✓ 啟用中LAN9353T/ML 概覽
An Ethernet switch is a network-semiconductor device that connects multiple endpoint or network segments through one or more physical ports. The LAN9353 belongs to the managed Ethernet switch category, where “managed” indicates that configuration and status can be controlled through a host interface rather than operating only as a simple fixed-function repeater. In the product hierarchy, it is an Ethernet interface controller within integrated circuits and broader network semiconductors.
The principal benefits of the LAN9353T/ML are its integrated three-port 10/100 Ethernet capability, compact surface-mount footprint, and host-controlled management. Its I2C interface allows an embedded controller to read status and configure switch behavior, while interrupt generation supports event-driven host software. Wake-up operation can reduce the energy burden of intermittently connected products without requiring the entire host system to remain continuously active.
Power-up and reset configuration makes the device suitable for designs that require deterministic initialization after power is applied. Non-volatile configuration storage preserves selected settings across power cycles, reducing repeated host configuration and supporting autonomous network behavior. The manufacturer datasheet identifies the device as a 3-port, 10 Mbps to 100 Mbps Ethernet switch in a 64-pin QFN exposed-pad package.
Typical uses include embedded control systems, industrial equipment, consumer products, USB-to-Ethernet adapters, set-top equipment, and connected industrial modules. In each case, the three integrated ports can reduce the need for separate Ethernet PHYs and provide a compact switching function. A 9 mm by 9 mm QFN package also supports space-constrained PCB layouts, although exposed-pad thermal management and high-speed layout remain important.
Designers should provide the datasheet-specified supply, decoupling, clock, magnetic-interface, and magnetics support required by the complete Ethernet implementation. Place the exposed pad to a thermal and ground plane as directed by the manufacturer layout guidance, keep sensitive Ethernet traces short and properly controlled, and validate magnetics and isolation requirements for each network application.
This page consolidates the verified manufacturer and distributor information for LAN9353T/ML, including package identification, management features, commercial availability, and design-focused selection guidance. It also distinguishes verified drop-in alternatives from unreferenced substitutes so procurement and engineering decisions remain traceable to supplied sources.
直接替換替代品，適用於 LAN9353T/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。
此產品無可直接替換的替代品。
申請替代品LAN9353T/ML 最大額定值與電氣特性
| Product Type | 3-port managed Ethernet switch with integrated 10/100 Base-TX PHY |
| Number of Ethernet Ports | 3 ports |
| Supported Data Rates | 10 Mbps to 100 Mbps |
| Ethernet Standards | 10/100 Base-T |
| Management Interface | I2C |
| Operating Supply Range | 1.8 V to 3.3 V |
| Wake-up Function | Supported |
| Power-up Configuration | Supported |
| Reset Configuration | Supported |
| Configuration Storage | Non-volatile |
| Interrupt Generation | Supported |
| 封裝 | 64-pin QFN exposed-pad package |
| Package Dimensions | 9 mm x 9 mm |
| 安裝類型 | Surface mount |
| Shipping Format | Tape and reel |
LAN9353T/ML 9 mm x 9 mm 腳位配置指南
LAN9353T/ML（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： LAN9353T/ML.
請參閱 資料表 以查看完整腳位配置。
典型應用
LAN9353T/ML 適用於 6 應用s: Embedded Industrial Control Systems, USB-to-Ethernet Network Adapters, Consumer Network Appliances, Industrial Ethernet Gateways, Test and Measurement Equipment, Connected Building and Automation Nodes.
Embedded Industrial Control Systems
The LAN9353T/ML fits embedded industrial controllers that need to connect sensors, service interfaces, and communications equipment through three managed 10/100 ports. Its I2C interface allows a host processor to retrieve status and configure the switch, while interrupt generation supports event-driven control software. The compact 64-pin QFN footprint reduces board area compared with three discrete Ethernet PHYs. The 1.8 V to 3.3 V operating range also supports common embedded supply rails, although production designs must verify the device’s operating-temperature and regulatory limits from the manufacturer datasheet.
推薦
USB-to-Ethernet Network Adapters
A USB-to-Ethernet adapter can use the LAN9353T/ML to provide a managed three-port 10/100 network interface beside a USB controller. The switch consolidates physical-layer functions into one compact 9 mm by 9 mm QFN package and exposes configuration and status through I2C. That arrangement is useful for industrial gateways, test equipment, and service computers that need more than one copper Ethernet port. The implementation must still include suitable magnetics, compliant termination, controlled-impedance routing, and the power-delivery network specified by the manufacturer datasheet.
推薦
Consumer Network Appliances
The LAN9353T/ML is appropriate for compact consumer appliances that require three managed 10/100 Ethernet connections without allocating space for separate switch and PHY components. Wake-up functionality can support energy-conscious operation, while persistent configuration reduces repeated setup after power cycling. The device’s three-port 10/100 capability is particularly suitable for set-top boxes, smart-home controllers, media gateways, and local network appliances. Designers should validate cable reach, isolation, radiated emissions, and enclosure temperature against their target market before production release.
推薦
Industrial Ethernet Gateways
An industrial Ethernet gateway can use the LAN9353T/ML to consolidate three Fast Ethernet links into a compact, host-manageable switching section. I2C configuration supports centralized policy, diagnostics, and event handling, and non-volatile storage preserves operational parameters across power interruptions. The 1.8 V to 3.3 V supply range and small 9 mm by 9 mm package fit tightly constrained gateway boards. Engineers must still confirm operating-temperature coverage, isolation requirements, grounding strategy, surge protection, and Ethernet compliance for the deployed industrial environment.
推薦
Test and Measurement Equipment
The LAN9353T/ML can provide a compact three-port 10/100 Ethernet interface in test instruments, analyzers, and communication fixtures. Managed switch behavior allows the instrument controller to observe link events, trigger interrupts, and configure operating parameters, reducing dependence on repeated software initialization. Wake-up support is useful in portable or intermittently operated equipment. The design still requires precise high-speed layout and the correct magnetic interface, while its 10/100 capability should be matched to the test system rather than mistaken for a gigabit Ethernet interface.
推薦
Connected Building and Automation Nodes
Building controllers and automation nodes can use the LAN9353T/ML to combine several 10/100 Ethernet endpoints in a small surface-mount footprint. The managed interface supports central configuration, interrupt-based status reporting, and deterministic recovery after power-up or reset. Non-volatile configuration can retain operational settings, while wake-up capability is useful for duty-cycled building equipment. Before deployment, designers should verify temperature performance, isolation and grounding, electromagnetic compatibility, and whether copper Ethernet lengths remain within the limits stated in the manufacturer documentation.
推薦
推薦產品摘要
工程參考資料，適用於 LAN9353T/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 |
|---|---|
| Manufacturer | Microchip Technology |
| Package | 64-pin QFN exposed-pad package, 9 mm x 9 mm |
| Port Count | 3 Ethernet ports |
| Data Rate | 10 Mbps to 100 Mbps |
| Ethernet Interface | 10/100 Base-T with integrated TX PHY |
| Management Interface | I2C |
| Operating Supply Range | 1.8 V to 3.3 V |
| Configuration Features | Wake-up, power-up configuration, reset configuration, non-volatile storage, and interrupt generation |
| Verified Starting Price | $2.6332 as of 2026-10-30 |
| Shipping Format | Tape and reel |
主要差異化特點
- Three integrated 10/100 Ethernet ports in one compact package (對比A discrete three-PHY implementation)
- Host-managed configuration through I2C (對比A fixed-function unmanaged Ethernet switch)
- Persistent and event-oriented operating features (對比LAN9353/ML ordering designation)
設計說明
Use the manufacturer datasheet 00001925A as the controlling reference for the 64-pin QFN land pattern, exposed-pad connection, and component placement. Preserve the specified pad and via geometry rather than substituting a generic 64-QFN footprint. Position input and output decoupling at the corresponding power pins, route high-speed Ethernet nets as controlled-impedance differential pairs, and keep the footprint compact enough to retain the intended 9 mm by 9 mm device area.
The exposed thermal pad is part of both the package construction and thermal-management strategy. Follow the datasheet’s exposed-pad connection instructions and provide an uninterrupted copper path to the required ground or thermal plane. Do not assume the exposed pad is automatically usable as a general-purpose signal or unrestricted ground connection. Actual copper area, via pattern, enclosure ventilation, and ambient temperature determine the achievable junction temperature.
Keep the Ethernet PHY and magnetics interface layout consistent with the manufacturer’s reference guidance. Maintain continuous reference planes beneath high-speed pairs, minimize stubs and unnecessary vias, and route clocks and sensitive interfaces away from switching nodes and power-conversion components. Verify differential impedance and pair length balance with the actual stack-up. Magnetic isolation placement is also critical because its location affects cable-side surge and radiated-emissions behavior.
Do not treat LAN9353/ML as a distinct functional drop-in alternative merely because both names appear in comparison listings: the verified difference is the assembly format, with LAN9353T/ML supplied on tape and reel and LAN9353/ML on a tray. Likewise, the presence of three 10/100 ports does not eliminate the need for magnetics, correct termination, isolation, clocking, and supply design. Review current errata and the complete manufacturer datasheet before freezing production hardware.
合規資訊
The supplied verified sources do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred.
