KSZ8041MLL - 10/100 Ethernet PHY | Microchip | MII
N.º de pieza: KSZ8041MLL ✓ ActivoKSZ8041MLL Descripción general
An Ethernet PHY is a physical-layer transceiver within the broader Ethernet interface hierarchy. It converts digital frame data from a MAC controller into physical signals suitable for twisted-pair cabling and recovers those signals at the receiving endpoint. The KSZ8041 family combines a mixed-signal PHY implementation with configurable operating modes, reducing board area and power consumption while preserving compatibility with conventional Ethernet controller interfaces.
Key features include support for 10BASE-T and 100BASE-TX links, full MII support on the MLL version, a single 3.3 V supply, and an integrated 48-pin LQFP package measuring 7 x 7 mm. The family also supports automatic crossover-related functions identified by Microchip as HP Auto MDI/MDIX. Configuration strapping pins establish speed, duplex, auto-negotiation, power-down behavior, and PHY-address settings when the device starts or resets.
The mixed-signal architecture is central to the KSZ8041 implementation. Analog transmit and receive circuitry works with the digital MAC-facing interface, allowing the same PHY family to support copper links at 10 Mb/s or 100 Mb/s. MII provides a parallel data path between the PHY and controller, while the broader KSZ8041 family is documented with RMII and SMII interface support. Designers must still verify the exact interface and strap requirements of the selected ordering code against the manufacturer datasheet.
Typical uses include embedded Ethernet ports, industrial controllers, communications equipment, network interface adapters, and systems using a Microchip-compatible 10/100 Ethernet controller. The KSZ8041MLL is especially relevant to designs that require the basic MII-supported PHY in a 48-LQFP surface-mount package rather than the TL or FTL ordering options described as TQFP packaged in the manufacturer data sheet.
Layout is critical because the device combines high-speed digital interface signals with sensitive analog receive and transmit circuits. Follow the manufacturer's hardware design checklist, keep the PHY and magnetics interface area tightly controlled, provide the required decoupling, and avoid routing sensitive analog traces beneath digital or high-current paths. Verify magnetics, termination, reset, strap, and crystal or clock requirements before releasing the PCB.
This page consolidates the verified distributor description, manufacturer data-sheet identification, package information, hardware-design guidance, and application-oriented engineering considerations. It also distinguishes the basic MII MLL variant from related KSZ8041 ordering codes and identifies where package, electrical, lifecycle, or compliance details require confirmation from the latest Microchip documentation.
Alternativas directas para KSZ8041MLL — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con KSZ8041MLL (mismo factor de forma y huella) — difiere en Package, Product Type, Data Rate, Mixed-Signal Design.
KSZ8041MLL-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
KSZ8041TL
✅ Sustitución directaConsulte el precio
Ver hoja de datos →KSZ8041FTL
✅ Sustitución directaConsulte el precio
Ver hoja de datos →KSZ8041TLI
✅ Sustitución directa✓ En stock
$3.6094 / unidad
Ver hoja de datos →KSZ8081RNACA-TR
✅ Sustitución directaConsulte el precio
Ver hoja de datos →KSZ8041MLL Especificaciones
| Ethernet Data Rate | 10 Mb/s and 100 Mb/s |
| Supported Physical Media | 10BASE-T and 100BASE-TX |
| Host Interface | Full MII |
| Tensión de alimentación | 3.3 V |
| Supply Configuration | Single supply |
| Transceiver Count | 1 |
| Port Count | 1 Ethernet port |
| Encapsulado | 48-LQFP |
| Package Body Size | 7 mm x 7 mm |
| Recuento de pines | 48 pins |
| Tipo de montaje | Surface mount |
| Automatic Crossover | HP Auto MDI/MDIX |
| Strapping Configuration | Speed, duplex, auto-negotiation, power-down, and PHY address |
| Strapping Latching | Power-up and reset |
Guía de configuración de pines de KSZ8041MLL 7 mm x 7 mm
Configuración de pines para KSZ8041MLL (encapsulado 7 mm x 7 mm). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para KSZ8041MLL.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
KSZ8041MLL es adecuado para 6 aplicacións: Embedded Controller Ethernet Port, Industrial Control Ethernet, Network Interface Adapter, Communication Equipment, Instrumentation and Test Equipment, IoT Gateway Ethernet Uplink.
Embedded Controller Ethernet Port
The KSZ8041MLL is appropriate for an embedded controller that requires a dedicated 10BASE-T/100BASE-TX copper port and a full MII connection. Its 10 Mb/s and 100 Mb/s support covers legacy industrial and commercial Ethernet links, while the 48-LQFP 7 x 7 mm package limits board footprint. The PHY is placed between the controller and the line-side magnetics, with its MII signals routed as a short, controlled parallel interface. Verify the controller's electrical timing, PHY address straps, reset sequence, and required clock architecture against the manufacturer documentation.
Recomendado
Industrial Control Ethernet
The KSZ8041MLL can supply the physical layer for an industrial control module that links a controller to a 10/100 Mb/s Ethernet network. Its single 3.3 V supply simplifies power architecture, and the MII interface supports integration with parallel-bus Ethernet controllers. A controlled mixed-signal layout remains necessary around the PHY and magnetic-device interface to prevent radiated emissions, differential-impedance errors, and ESD-related failures. Production designs should also implement a controlled reset, validated strap resistors, proper supply decoupling, and a qualified cable or chassis-grounding strategy.
Recomendado
Network Interface Adapter
The KSZ8041MLL is suitable for a compact network interface adapter that converts a host controller's MII signals into a standard 10/100 Ethernet physical layer. Its 48-LQFP package provides a practical surface-mount implementation without a large connector or heat-spreader arrangement. The adapter must include the appropriate Ethernet magnetics, center-tap termination, line-side filtering, and physical RJ45 structure required by the target network standard. The PHY's 10 Mb/s and 100 Mb/s support enables one design to cover both legacy and common Fast Ethernet links.
Recomendado
Communication Equipment
For communication equipment requiring a wired management or data port, the KSZ8041MLL provides a single-port 10/100 Ethernet physical layer with a full MII host interface. Its compact 48-LQFP 7 x 7 mm package suits equipment where board area is constrained, while single-supply operation at 3.3 V supports common embedded logic rails. The key engineering consideration is isolation between the digital MII domain and the analog line-side network domain. Use manufacturer-recommended component values, controlled impedance, short return paths, and carefully placed magnetics to preserve Ethernet signal integrity.
Recomendado
Instrumentation and Test Equipment
The KSZ8041MLL can provide network connectivity for instrumentation, test equipment, and service interfaces that use 10/100 Mb/s Ethernet. A full MII interface allows a parallel FPGA or microcontroller interface, while the PHY handles physical-layer encoding and reception. For laboratory equipment, particular attention should be given to isolated or nonisolated magnetics selection, chassis grounding, radiated-emissions limits, and protection against external cable transients. The PHY's operating-temperature and EMC details must be checked in the current data sheet before it is qualified for a particular instrument class.
Recomendado
IoT Gateway Ethernet Uplink
The KSZ8041MLL can serve as a wired uplink in an IoT gateway that bridges embedded processing to a 10/100 Mb/s network. The single-port PHY is compact enough for gateways with limited PCB area and provides an MII path to a suitable host controller. Auto-negotiation and automatic crossover capabilities reduce installation friction, although the final strap configuration must match the intended boot behavior. In a connected enclosure, pay particular attention to conducted emissions, ESD protection placement, Ethernet isolation, and separation between switching regulators and the PHY's analog receive section.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para KSZ8041MLL — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | KSZ8041MLL-TR | KSZ8041TL | KSZ8041FTL | KSZ8041TLI | KSZ8081 |
|---|---|---|---|---|---|---|
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) package class; manufacturer identifies TQFP ordering option | 48-LQFP (7x7) package class; manufacturer identifies TQFP ordering option | 48-LQFP (7x7) package class | 48-LQFP (7x7) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Transceiver Type | 1/1 Ethernet transceiver | 1/1 Ethernet transceiver | Single-port Ethernet PHY | Single-port Ethernet PHY | Single-port Ethernet PHY | Single-port 10/100 PHY |
| Ethernet Speed | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s |
| Supported Media | 10BASE-T/100BASE-TX | 10BASE-T/100BASE-TX | 10BASE-T/100BASE-TX family | 10BASE-T/100BASE-TX family | 10BASE-T/100BASE-TX family | 10/100 family |
Diferenciadores clave
- Explicitly identified basic full-MII ordering option (frente a KSZ8041FTL)
- Verified 48-LQFP 7 x 7 mm package identification (frente a KSZ8041TL)
- Documented configuration and reset behavior (frente a KSZ8081)
Notas de diseño
Implement the PHY, Ethernet magnetics, and RJ45 section as a controlled mixed-signal layout. Keep the MII traces short and matched where required by the host interface, provide a continuous ground reference, and avoid switching nodes, high-current return paths, and digital clocks beneath the analog PHY and magnetics area. Apply manufacturer-recommended component placement and differential-impedance rules before releasing the PCB.
Do not infer strap values from generic Ethernet examples. The verified Microchip hardware checklist states that KSZ8041MLL straps configure speed, duplex, auto-negotiation, power-down, and PHY address and are latched at power-up and reset. Confirm resistor values, polarity, and controller address allocation in the current data sheet, then test each boot and reset sequence on hardware.
Use the supply network and decoupling arrangement specified in the official data sheet and hardware checklist. The KSZ8041MLL operates from a single 3.3 V supply, but analog and digital return currents still need a low-impedance path to the device ground pins. Keep the 3.3 V distribution path compact, place required capacitors close to their specified pins, and avoid sharing high-current return paths with the sensitive Ethernet receive circuitry.
Información de cumplimiento
The verified manufacturer data-sheet snippet identifies the related KSZ8041TL and KSZ8041FTL options as lead-free TQFP devices, but it does not explicitly state the lead-free status of the KSZ8041MLL package. RoHS, REACH, AEC-Q100, halogen-free, and conflict-minerals status were not present in the supplied evidence.
