LAN9218-MT - 100Mbps 10/100 Ethernet Controller | Microchip
N.º de pieza: LAN9218-MT ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $45.6424 | $45,64 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
LAN9218-MT Descripción general
An Ethernet controller is an interface IC that connects an embedded processor or programmable logic device to a copper Ethernet network. Its MAC layer manages frame transmission and reception, while its integrated PHY handles the physical signaling required between digital circuitry and an Ethernet transformer or magnetics. This integration reduces the number of external network-interface components compared with separate MAC and PHY solutions, although external passive and magnetic components are still required by the application design.
The LAN9218-MT supports 10/100 Ethernet operation and uses a parallel interface instead of a serial media-independent interface. The verified distributor result identifies the interface as 32-bit and the data rate as 100 Mbps. The device is intended for embedded systems requiring an Ethernet endpoint, including industrial controls, communications equipment, embedded servers, and connected test equipment. Its 100-TQFP package provides a high pin count for the parallel host bus, control signals, clocks, power supplies, and Ethernet physical connections.
The manufacturer describes the LAN9218 family as architected for high performance and integration. The verified product page and datasheet links should be used for the complete register map, electrical limits, timing specifications, magnetic-component recommendations, Auto-MDIX behavior, reference schematic, and package drawing. Because the provided data does not include the complete manufacturer parameter table, unverified values are intentionally identified as in the specifications rather than inferred.
A typical implementation places the Ethernet controller between a host processor and network magnetics. The host communicates through the parallel bus, while the integrated PHY connects through transformer-center-tapped or other approved magnetic arrangements. PCB layout is important because high-speed digital signals, analog PHY signaling, power distribution, and magnetics must be separated appropriately. Microchip’s reference schematic and placement checklist are the authoritative starting points for a production layout.
Designers should use the manufacturer datasheet and reference schematic to confirm pin functions, strap settings, clock requirements, termination, decoupling, and Auto-MDIX configuration. The verified cross-reference material notes that Auto-MDIX support may require changes to magnetics and surrounding passive components, and that a PCB change may be needed. Therefore, a software-compatible Ethernet controller is not automatically a hardware drop-in replacement.
This page consolidates verified distributor pricing information, manufacturer documentation links, application context, and design guidance. It is intended to help engineers identify the correct LAN9218-MT, assess whether an alternative is truly pin-compatible, and move from component selection to a validated Ethernet hardware design.
Alternativas directas para LAN9218-MT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LAN9218I-MT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LAN9218-MT-E2
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LAN9218-MT-E3
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LAN9218-MT Especificaciones
| Ethernet Data Rate | 100 Mbps |
| Ethernet Standard | 10/100 Base-T/TX |
| Controller Architecture | Single-chip Ethernet controller with integrated PHY |
| Host Interface | 32-bit parallel interface |
| Supply Voltage Range | 2.97 V to 3.63 V |
| Rango de temperatura de funcionamiento | 0 °C to +70 °C |
| Encapsulado | 100-TQFP, 14 mm x 14 mm |
| Package Pitch | 0.5 mm |
| External Data Bus | 32-bit |
| Address Bus | 7-bit |
| Auto-MDIX | Supported by the LAN9218 family |
| Ethernet Magnetics | External magnetic components required by application design |
| Estado RoHS | Compliant for the lead-free RoHS-compliant package information provided for the related LAN9218i documentation |
| Lead-Free Package | Yes, for the related LAN9218i-MT documentation |
| Halogen-Free Maximum Concentration | Maximum concentration values specified in the related LAN9218i documentation |
Guía de configuración de pines de LAN9218-MT yes, for the related lan9218i-mt documentation
Configuración de pines para LAN9218-MT (encapsulado yes, for the related lan9218i-mt documentation). 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 LAN9218-MT.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
LAN9218-MT es adecuado para 6 aplicacións: Industrial Embedded Ethernet Controller, Networked Data Acquisition Device, Embedded Network Service Gateway, Test and Measurement Ethernet Interface, Communications Equipment with 10/100 Link, Smart Building and Sensor Gateway.
Industrial Embedded Ethernet Controller
The LAN9218-MT fits an embedded controller that needs 10/100 Ethernet connectivity without implementing separate MAC and PHY devices. Its verified 100 Mbps rate, integrated single-chip architecture, 32-bit host interface, and 3.3 V supply range suit equipment such as programmable controllers, factory interfaces, and condition-monitoring gateways. Use Microchip’s reference schematic and placement checklist to define the host bus, magnetics, clocking, and termination. The design must also account for the listed 0 °C to +70 °C LAN9218-MT temperature range and verify enclosure temperature margins.
Recomendado
Networked Data Acquisition Device
Use the LAN9218-MT as the Ethernet endpoint for a data-acquisition product that must move sensor or test records to a host computer. The 32-bit parallel interface provides a direct connection to processors with sufficient bus bandwidth for the selected operating mode, while the integrated PHY reduces the number of separate network-interface components. The product still needs correctly selected Ethernet magnetics, approved termination, a clean 3.3 V supply, and firmware support for the LAN9218 register set. Validate sustained packet traffic and Auto-MDIX behavior against the final cable and switch configuration.
Recomendado
Embedded Network Service Gateway
The LAN9218-MT can serve a compact gateway that bridges local serial or processor functionality to a 10/100 Ethernet network. Its single-chip controller and PHY arrangement supports a smaller Ethernet subsystem than a discrete MAC/PHY implementation, while the 100-TQFP package exposes the parallel host bus and required control signals. Because the host bus is 32-bit rather than an MII or RMII interface, firmware and board routing must be planned around the controller’s timing and register definitions. Confirm production availability and temperature requirements before freezing the design.
Recomendado
Test and Measurement Ethernet Interface
For an instrument that must expose readings, control commands, or captured data over Ethernet, the LAN9218-MT provides a dedicated 10/100 Base-T/TX interface in a single IC. The verified 100 Mbps rate is suitable for many measurement-control workloads, but throughput depends on host DMA, firmware, packet size, protocol overhead, and network conditions. Use a short, controlled parallel-bus layout and place the Ethernet magnetics and PHY-support components according to Microchip’s reference design. Validate EMC, grounding, isolation, and cable protection for the final enclosure.
Recomendado
Communications Equipment with 10/100 Link
The LAN9218-MT is suitable for communications equipment requiring a dedicated 10/100 Ethernet endpoint alongside embedded control logic. The single-chip architecture can simplify the BOM, while the 32-bit host interface can support a deterministic processor bus arrangement when timing and firmware are carefully matched. The verified device is not a USB Ethernet controller, so system USB compatibility does not imply software or hardware interchangeability. Select magnetics, isolation, and protection based on the required cable reach, grounding topology, and target compliance environment.
Recomendado
Smart Building and Sensor Gateway
A smart-building gateway can use the LAN9218-MT to provide an Ethernet uplink for local sensors and control data. The verified 2.97 V to 3.63 V supply range supports a 3.3 V power architecture, and the 100 Mbps rate is more than adequate for many sensor aggregation and supervisory-control workloads. The controller’s 0 °C to +70 °C specification must be checked against indoor or outdoor deployment temperatures. Plan the Ethernet magnetic path for the enclosure, keep sensitive digital routing away from magnetics where recommended, and validate Auto-MDIX support with the selected network equipment.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LAN9218-MT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | LAN9218I-MT | LAN9218-MT-E2 | LAN9218-MT-E3 |
|---|---|---|---|---|
| Package | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) | 100-terminal PQFP (14 x 14 mm) | 100-TQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
Diferenciadores clave
- Integrated single-chip Ethernet controller and PHY (frente a LAN9218I-MT)
- Wider documented temperature range on the related LAN9218i option (frente a LAN9218I-MT)
- 32-bit parallel host interface (frente a LAN9218-MT-E2)
Notas de diseño
Start the layout from Microchip’s LAN9218 reference schematic and TQFP placement checklist rather than treating the controller as a generic Ethernet PHY. Keep the 32-bit host bus routing short and controlled, place required decoupling close to the supply pins, and preserve the package footprint and pin numbering of the exact ordering variant. The verified material specifically notes that Auto-MDIX changes can require different magnetics and passive components, so the PCB should not be assumed reusable across every LAN9218 option.
The Ethernet side contains high-speed analog and differential signaling that must be separated from clocks, switching nodes, and digital return paths. Follow the manufacturer’s placement checklist for the TPO+ termination pull-up and magnetics, including the verified recommendation to place the 49.9 ohm pull-up close to the LAN9218 when Auto-MDIX is enabled or close to the magnetics when it is disabled. Validate return paths, impedance-controlled geometry, isolation, and connector protection with the final stack-up.
Do not substitute a controller merely because it also supports 10/100 Ethernet. The LAN9218-MT uses a 32-bit parallel host interface, so MII or RMII devices, different register maps, and different clock arrangements are not drop-in replacements. Also verify the exact temperature suffix: the supplied distributor data lists LAN9218-MT at 0 °C to +70 °C, while related LAN9218i documentation identifies -40 °C to +85 °C for another ordering option.
Design the Ethernet subsystem around the verified 2.97 V to 3.63 V supply range and the complete electrical limits in the manufacturer datasheet. Provide local decoupling, controlled ground return paths, and adequate supply headroom for the controller and magnetics. Do not use the LAN9218-MT specification snippet as a substitute for the datasheet’s absolute-maximum, timing, power-consumption, or sequencing requirements.
A software-compatible driver does not by itself prove hardware interchangeability. Confirm package pinout, temperature grade, supply voltage, clock source, strap configuration, Ethernet magnetic topology, Auto-MDIX behavior, PHY termination, and the host bus timing before releasing a replacement BOM. Microchip states that drivers written for the relevant products can work with LAN9218, but Auto-MDIX implementation may still require a minor PCB change.
Información de cumplimiento
The related Microchip LAN9218i documentation identifies a lead-free RoHS-compliant package and references halogen maximum-concentration values. RoHS status for the exact LAN9218-MT ordering code should still be confirmed on the current product page or distributor documentation. REACH, conflict-minerals, and automotive qualification are not established for LAN9218-MT by the supplied data.
