KSZ8893MQLI - 3-Port 10/100 Managed Ethernet Switch | Microchip
N.º de pieza: KSZ8893MQLI ✓ ActivoKSZ8893MQLI Descripción general
An Ethernet switch is a semiconductor that connects multiple physical-network endpoints, forwards Ethernet frames according to learned MAC addresses, and separates traffic into collision domains. A managed Layer 2 switch adds configurable functions such as rate limiting, tag- and port-based VLANs, QoS priority, management, Management Information Base counters, and RMII, MII, or SNI CPU interfaces. The KSZ8893 is positioned for low-port-count, cost-sensitive embedded networking systems.
The KSZ8893MQLI integrates three 10/100 Mbps Ethernet ports with PHYs and provides both management and data paths to an embedded processor. Supported management functions include rate limiting, VLAN operation, QoS priority, and MIB counters. I2C and SPI interfaces allow a host controller to configure the switch, while RMII, MII, and SNI options support processor-side connections. These capabilities make the device useful where several Fast Ethernet links must be consolidated without using a full-size external switch.
The KSZ8893 family supports copper and fiber-oriented 10/100 networking and can serve as the central Layer 2 forwarding element in industrial controllers, embedded servers, communications equipment, and network appliances. Its managed features allow designers to partition traffic, prioritize latency-sensitive packets, and monitor port activity. The 128-PQFP package provides a high pin count suitable for parallel MII, RMII, SNI, management, media, and power connections.
Typical deployments include factory automation controllers with Ethernet-connected sensors, compact industrial gateways, embedded network equipment, and OEM control systems. In these applications, the integrated PHYs reduce the number of discrete Ethernet components, while configurable VLAN and QoS features help separate equipment traffic from real-time control traffic. A processor can access switch registers and counters through I2C or SPI and connect through the supported CPU-side interface.
Design the PCB around the manufacturer’s complete pin-description table and reference layout. Preserve the required Ethernet magnetics path, differential pair geometry, grounding, decoupling, and interface timing. Because this is a 128-pin PQFP, pin escaping and via planning are particularly important for the 14 x 20 mm footprint. Confirm the precise pin functions, strap requirements, clocking arrangement, and external-component recommendations in the Microchip datasheet before schematic release.
This product page combines the manufacturer’s device description with package and sourcing information, practical integration guidance, and a parameter-level comparison framework. It helps engineers evaluate the KSZ8893MQLI against related Ethernet-interface options while keeping PCB compatibility, management features, and processor-interface requirements central to the selection decision.
Alternativas directas para KSZ8893MQLI — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
KSZ8893MBLI
✅ Sustitución directaConsulte el precio
Ver hoja de datos →KSZ8893MQLI Valores máximos y características eléctricas
| Product Type | Integrated three-port 10/100 Mbps managed Layer 2 Ethernet switch |
| Number of Ethernet Ports | 3 ports |
| Velocidad de datos | 10/100 Mbps per port |
| Integrated PHYs | 3 integrated PHYs |
| Network Layer | Layer 2 |
| Supported Media | 10/100 Base-FX/T/TX |
| CPU Interfaces | RMII/MII/SNI |
| Management Interface | I2C and SPI |
| VLAN Support | Tag-based and port-based VLAN |
| Traffic Control | Rate limiting and QoS priority |
| Monitoring | Management Information Base (MIB) counters |
| Encapsulado | 128-PQFP (14 x 20 mm) |
| Package Type | PQFP surface-mount package |
| Tipo de montaje | Surface mount |
| Estado RoHS | ROHS3 compliant |
| Estado del ciclo de vida | Active |
| Typical Applications | Low-port-count, cost-sensitive 10/100 Mbps switch systems |
Guía de configuración de pines de KSZ8893MQLI pqfp surface-mount package
Configuración de pines para KSZ8893MQLI (encapsulado pqfp surface-mount package). 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 KSZ8893MQLI.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
KSZ8893MQLI es adecuado para 6 aplicacións: Industrial Automation Controller, Embedded Network Gateway, Factory Edge Communication Hub, Compact Network Appliance, Networked Measurement System, Embedded Control Console.
Industrial Automation Controller
The KSZ8893MQLI fits an industrial automation controller that must connect sensors, remote I/O modules, service equipment, and a supervisory network. Its three integrated 10/100 Mbps PHYs reduce the number of discrete Ethernet transceivers required around the controller. Managed Layer 2 features including rate limiting, tag- and port-based VLANs, and QoS priority help keep operational traffic separate from less critical network traffic, while MIB counters support diagnostics. Use the manufacturer reference circuit for Ethernet magnetics, termination, grounding, and layout, and confirm the device’s operating-temperature limits for the target enclosure.
Recomendado
Embedded Network Gateway
The KSZ8893MQLI supports a compact network gateway by concentrating three Fast Ethernet links behind a managed switching IC. A host processor can use RMII, MII, or SNI for the processor-facing path, while I2C or SPI provides configuration and counter access. VLAN support permits isolated devices or logical networks to share the same physical switch, and QoS priority can favor control or management traffic. The integrated PHYs make this architecture useful where board area is constrained. External magnetics and exact differential-pair layout remain mandatory elements of each copper Ethernet port.
Recomendado
Factory Edge Communication Hub
The KSZ8893MQLI is suited to a factory-edge hub that links programmable controllers, condition-monitoring equipment, remote gateways, and engineering workstations. Three 10/100 Mbps ports provide enough bandwidth for the common 100 Mbps industrial Ethernet segment, while rate limiting can restrain noncritical traffic at each port. Tag- and port-based VLANs create logical separation between machinery, management, and plant-floor services, and MIB counters assist with event diagnosis. Because the switch is specified for 10/100 Mbps rather than Gigabit Ethernet, verify that every connected endpoint and uplink can operate within that rate envelope.
Recomendado
Compact Network Appliance
The KSZ8893MQLI can serve as the managed switching element inside a compact appliance with several 10/100 Mbps service ports. Its Layer 2 feature set permits each attached device to be assigned to a separate VLAN without requiring a separate physical switch per service. A processor can read MIB counters and adjust rate limits through I2C or SPI, while RMII, MII, or SNI carries traffic to the host. This arrangement is well suited to access, monitoring, or communications appliances whose external copper ports are constrained by cost and space. Confirm connector and magnetics selection against the manufacturer’s supported media and reference designs.
Recomendado
Networked Measurement System
The KSZ8893MQLI fits a networked measurement or test system requiring a common managed Ethernet backbone for instrument controllers, acquisition modules, and service interfaces. Its 10/100 Mbps ports suit legacy measurement equipment, and QoS priority can protect control messages or time-sensitive acquisition traffic from best-effort traffic. Tag- and port-based VLANs can separate instrument domains, while MIB counters aid commissioning and fault isolation. The SPI management path can be useful for systems with limited host I/O availability. Because the device is not described as a Gigabit switch, ensure synchronized measurement traffic remains within the supported per-port bandwidth.
Recomendado
Embedded Control Console
The KSZ8893MQLI supports an embedded control console that must aggregate operator, service, and peripheral networks while retaining Layer 2 management. Three 10/100 Mbps ports can connect a display or controller, a service interface, and an external control network. Port-based VLANs isolate management access, tag-based VLANs support shared infrastructure, and QoS priority can favor operational control packets. The I2C and SPI management interfaces allow a low-speed supervisory controller to initialize the switch and read MIB counters. The 128-PQFP package demands careful escape routing, while the data sheet governs exposed-pad or thermal requirements where applicable.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para KSZ8893MQLI — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | KSZ8893MBLI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 128-PQFP (14 x 20 mm) | 128-PQFP (14 x 20 mm) |
| Ethernet Port Count | 3 ports | 3 ports |
| Data Rate | 10/100 Mbps per port | 10/100 Mbps per port |
| Integrated PHYs | 3 integrated PHYs | 3 integrated PHYs |
| Network Layer | Layer 2 managed switch | Layer 2 managed switch |
| Management Interface | I2C and SPI | I2C and SPI |
| CPU Interface | RMII/MII/SNI | RMII/MII/SNI |
| VLAN Support | Tag-based and port-based VLAN | Tag-based and port-based VLAN |
| Traffic Management | Rate limiting and QoS priority | Rate limiting and QoS priority |
Diferenciadores clave
- Integrates three managed Fast Ethernet ports in one switching IC (frente a KSZ8893MBLI)
- Provides a choice of processor-facing interfaces (frente a KSZ8893MBLI)
- Adds Layer 2 traffic management beyond basic switching (frente a KSZ8893MBLI)
Notas de diseño
Use the manufacturer’s Ethernet reference layout as the starting point for the 128-PQFP footprint. Keep each 10/100 Base-T or Base-FX media path short, preserve the differential geometry specified for the chosen PHY and magnetics arrangement, and provide clean ground references beneath high-speed and magnetics sections. Because this package has 128 leads on a 14 x 20 mm body, plan via fanout and assembly clearances before placing the processor, clock source, and management interface.
Do not assume that another three-port managed switch is interchangeable because its port count and headline data rate match. Verify every 128-PQFP pin assignment, processor interface mode, clock source, strap configuration, supply rail, reset behavior, management register map, and software driver model. A footprint match alone does not establish a drop-in replacement. Confirm the exact variant markings and grade information in the Microchip ordering documentation before releasing production artwork.
Treat RMII or MII timing as a constrained parallel interface. Route processor-facing signals with continuous reference planes, avoid unnecessary stubs, and observe the data sheet’s clocking and setup-and-hold requirements. Decouple each required supply rail close to its assigned pins, connect ground pins according to the package drawing, and use the manufacturer’s specified startup and reset sequence. This minimizes ringing and setup-time failures on the 14 x 20 mm PQFP escape routes.
Estimate the total port and core power dissipation at the highest expected traffic, ambient temperature, and supply voltage. The estimate is (VIN − VOUT) × IOUT for the linear Ethernet PHY path, plus the device’s internal consumption. Compare the resulting junction-temperature estimate with the maximum rating from the data sheet, and use the package’s exposed thermal features, copper area, and airflow assumptions in that calculation. Avoid presenting an estimated dissipation as a catalog specification.
Información de cumplimiento
The distributor product record identifies KSZ8893MQLI as ROHS3 compliant and active. No additional REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status is established in the manufacturer material identified for this page.
