LAN9354I/ML - 3-Port 10/100 Managed Ethernet Switch | Microchip
Référence : LAN9354I/ML ✓ ActifLAN9354I/ML Présentation
A managed Ethernet switch is a network-semiconductor category that combines multiple physical-layer PHYs with frame handling, port management, and host connectivity. Within the broader hierarchy, the LAN9354I/ML is an Ethernet switch, an interface IC, a networking semiconductor, and ultimately an embedded connectivity solution. Its RMII interface connects the switch to a host processor, while I2C provides a management path for configuration and status access.
The verified product information identifies three 10/100 Ethernet ports, RMII connectivity, and I2C interface support. The integrated PHY arrangement reduces the number of external Ethernet magnetics and line-driver subsystems required by a conventional discrete switch implementation. The 56-QFN 8 x 8 mm package also supports a relatively compact PCB footprint, although exposed-pad layout and thermal management must follow the manufacturer package guidance.
The LAN9354I/ML belongs to Microchip's LAN9354 family of highly integrated, small-footprint, full-featured 3-port managed Ethernet switches. The family is positioned for cost-sensitive consumer, embedded, and industrial electronic designs where a system requires several 10/100 Base-T connections and management features but does not require Gigabit Ethernet throughput.
Typical uses include industrial control gateways, embedded equipment with multiple Fast Ethernet service ports, console or test equipment, and compact network appliances. The RMII interface is particularly useful when the host processor already has a dedicated media-independent interface, while I2C management allows software or a controller to access switch registers. Exact supported features, register behavior, clocking requirements, and electrical limits must be confirmed in the manufacturer datasheet before layout.
Designers should account for all 56 package terminals, the exposed thermal pad, differential Ethernet routing, magnetics or integrated PHY requirements, RMII timing, and the manufacturer's recommended decoupling network. Because the verified excerpts do not provide the complete pin map, clock frequencies, PHY electrical parameters, or full operating limits, these values should not be inferred from generic Ethernet-switch designs.
This product record combines verified distributor pricing, package and interface facts, family-level alternatives, and application-specific engineering guidance. It also distinguishes confirmed data from unavailable specifications so procurement and design decisions can be checked against the current Microchip manufacturer documentation.
Alternatives de remplacement direct pour LAN9354I/ML — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec LAN9354I/ML (même facteur de forme et même empreinte) — différant par Device Type, Package.
LAN9354TI/ML
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LAN9354I/ML Valeurs maximales et caractéristiques électriques
| Device Type | 3-port 10/100 managed Ethernet switch |
| Number of Ethernet Ports | 3 ports |
| Ethernet Speed | 10/100 Base-T |
| Integrated PHY | 10/100 Base-T/TX PHY |
| Host Interface | RMII |
| Management Interface | I2C |
| Boîtier | 56-QFN (8 x 8 mm) |
| Type de montage | Surface mount |
| Température de fonctionnement | -40 C to +85 C |
| Statut RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
Guide de configuration des broches du LAN9354I/ML 56-qfn (8 x 8 mm)
Configuration des broches du LAN9354I/ML (boîtier 56-qfn (8 x 8 mm)). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour LAN9354I/ML.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
LAN9354I/ML convient pour 6 applications: Industrial Ethernet Control Gateway, Embedded Network Appliance, Industrial Test and Measurement Equipment, Connected Building and Automation Equipment, Networked Audio and Video Peripheral, Robotics and Machine-Control Networking.
Industrial Ethernet Control Gateway
The LAN9354I/ML fits an industrial gateway that must consolidate three Fast Ethernet links into one processor-facing RMII port. Its confirmed -40 C to +85 C operating range and integrated 10/100 Base-T/TX PHYs provide a practical bridge between local sensors, programmable controllers, and an embedded Linux or real-time host. I2C management provides a separate path for configuration and status monitoring. The design must still include the manufacturer-recommended Ethernet magnetics or coupling network, differential routing, supply filtering, and proper exposed-pad layout for the 56-QFN package.
Recommandé
Embedded Network Appliance
The LAN9354I/ML is useful in compact embedded appliances that require several 10/100 service ports without adding three discrete Ethernet controllers. Three integrated PHYs reduce board area, while RMII provides a known host interface for processors and programmable controllers. I2C allows a supervisory task to read switch status or configure supported registers. Because the device is limited to 10/100 rather than Gigabit Ethernet, it is best for management, instrumentation, serial-to-Ethernet, and legacy equipment connectivity rather than high-bandwidth storage traffic.
Recommandé
Industrial Test and Measurement Equipment
A three-port managed Ethernet arrangement can simplify test instruments that expose separate control, trigger, and service connections. The LAN9354I/ML provides 10/100 Base-T connectivity, RMII for the instrument controller, and I2C for configuration or diagnostics. This combination is useful where three wired network interfaces are needed but one Gigabit PHY would be unnecessary. Firmware should treat the switch as a managed network element, while hardware must preserve differential-pair geometry, isolation boundaries, and adequate return paths for each Ethernet port.
Recommandé
Connected Building and Automation Equipment
The LAN9354I/ML can support building controllers, access-control terminals, and industrial automation equipment with multiple 10/100 network links. Its -40 C to +85 C range suits many indoor and industrial environments, while RMII allows a local processor to avoid implementing a separate MAC and PHY for every port. I2C management can assist startup sequencing and status polling. Deployment still requires validation of Ethernet isolation, surge exposure, enclosure temperature, grounding, and whether Fast Ethernet bandwidth satisfies the connected equipment.
Recommandé
Networked Audio and Video Peripheral
The LAN9354I/ML can provide service, control, and management connections for a networked audio or video peripheral that does not need Gigabit throughput. The three 10/100 ports support separate logical networks or links to local amplifiers, displays, and configuration equipment. RMII supplies a manageable host-side data path, while I2C can expose switch controls to the system controller. Engineering validation should focus on latency, packet prioritization if supported, Ethernet physical-layer requirements, and isolation rather than assuming features not confirmed in the available excerpts.
Recommandé
Robotics and Machine-Control Networking
The LAN9354I/ML is applicable to robot controllers and machine-control systems requiring three 10/100 links for local vision, motion modules, or service equipment. A processor with RMII can manage traffic across the integrated switch, and I2C supports configuration and status functions. The verified industrial temperature range is suitable for many controlled environments, but motor systems demand careful partitioning of Ethernet and power paths. Differential routing, isolation strategy, surge exposure, grounding, and thermal performance should be evaluated together before use near high-current machinery.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LAN9354I/ML — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LAN9354TI/ML |
|---|---|---|
| Package | 56-QFN (8 x 8 mm) | 56-QFN (8 x 8 mm) reported; source excerpt contains a QFN-64 discrepancy requiring verification |
| Brand | Microchip Technology | Microchip Technology |
| Device Type | 3-port 10/100 managed Ethernet switch | Same-family managed Ethernet switch |
| Number of Ethernet Ports | 3 ports | 3 ports |
| Ethernet Speed | 10/100 Base-T | 10/100 Base-T |
| Integrated PHY | 10/100 Base-T/TX PHY | Integrated Fast Ethernet PHY family functionality |
| Host Interface | RMII | RMII |
| Management Interface | I2C | I2C |
Principaux différenciateurs
- Three integrated Fast Ethernet ports in one controller (vs LAN9354TI/ML)
- Host connectivity through RMII (vs LAN9354TI/ML)
- Compact industrial-temperature package (vs LAN9354TI/ML)
Notes de conception
Route all Ethernet differential pairs as controlled-impedance, tightly coupled nets and follow the current Microchip reference layout for the 56-QFN device. Keep the RMII and I2C traces away from switch-node and magnetics areas, provide a continuous ground reference, and use the manufacturer-recommended input and output capacitors at the device pins. The exposed pad must be connected to the appropriate ground plane according to the package drawing rather than inferred from generic QFN practice.
Complete pin assignment and exposed-pad verification before schematic release because the available distributor excerpts confirm the 56-QFN package but do not publish its terminal map. Confirm RMII clock source, signal direction, management address configuration, and every supply terminal against the current manufacturer datasheet. A wrong assumption about a power, clock, or no-connect terminal can prevent startup or damage an assembled board even when the selected footprint looks correct.
Do not treat Fast Ethernet switch functionality as equivalent to Gigabit Ethernet or assume that all managed-switch features are identical across ordering codes. Verify the selected suffix against Microchip's ordering table, particularly temperature grade, tray or reel format, exposed-pad treatment, and firmware/register compatibility. The LAN9354TI/ML cross-reference candidate also has an unresolved package-count discrepancy, so it should not be substituted without an approved package and pin comparison.
Preserve isolation and filtering boundaries between external Ethernet conductors and the host digital circuitry. Use only the magnetics, common-mode filtering, and protection components supported by the manufacturer reference design. Keep protection-device capacitance and return paths away from sensitive RMII traces, and validate conducted and radiated emissions in the finished enclosure because a compact multilayer board can couple switch activity into adjacent control signals.
Informations de conformité
The verified excerpts confirm an industrial temperature range of -40 C to +85 C but do not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. Compliance documents must be checked on the current Microchip product page or manufacturer declaration.
