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KSZ8873MLL - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8873MLL

KSZ8873MLL - 3-Port 10/100 Ethernet Switch | Microchip

The Microchip KSZ8873MLL is a highly integrated three-port 10/100 Mbps managed Ethernet switch with integrated PHYs, a 1.8 V to 3.3 V supply range, an MII host interface, and a 64-LQFP package measuring 10 mm by 10 mm. It is designed for compact, power-efficient, low-port-count Ethernet systems. An Ethernet switch is a semiconductor device that connects multiple physical-layer network ports and manages frame forwarding between them. The KSZ8873 belongs to the Ethernet switch controller hierarchy: three-port managed switch, Ethernet interface IC, network interface, and semiconductor. Compared with discrete Ethernet implementations, its integrated PHYs reduce board area while supporting standardized 10 Mbps and 100 Mbps data rates. The verified manufacturer information identifies three Ethernet ports, 10/100 Mbps operation, low power consumption, and an MII interface. Available specifications also identify 1.8 V, 2.5 V, and 3.3 V supply operation and a 0°C to +70°C temperature range for KSZ8873MLL. These characteristics make the device relevant to embedded network equipment, industrial controllers, embedded Linux systems, and compact Ethernet access products. Technically, the KSZ8873 combines three integrated 10/100 network interfaces with switch-management logic. Its 1.8 V to 3.3 V operating range accommodates systems using 1.8 V, 2.5 V, or 3.3 V power rails, while the MII interface provides a standardized connection to a host controller or processor. The manufacturer describes the family as a cost-sensitive, low-port-count solution for power-efficient 10/100 Mbps switch systems. Typical applications include embedded Linux gateways, industrial Ethernet controllers, printer and copier network interfaces, embedded industrial equipment, and compact network appliances. In each case, the three integrated ports permit local connectivity without requiring three separate external Ethernet PHYs. The MII interface is particularly useful where the system processor already provides Ethernet MAC functionality. Designers should verify the exact MII signal mapping, clock requirements, crystal options, reference circuit, and thermal conditions against the complete Microchip datasheet before layout release. Because the switch includes magnetic-interface PHY circuitry, its layout guidance for magnetics, termination, power decoupling, and high-speed signal integrity should be followed closely rather than treating the package as a generic low-speed controller. This page consolidates the verified manufacturer, distributor, and substitution information for KSZ8873MLL, including pricing context, same-family drop-in candidates, comparison parameters, and practical design considerations. The alternatives and notes provide engineering context beyond a basic distributor specification table, while unresolved electrical details are explicitly identified instead of being estimated.

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KSZ8873MLLI - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8873MLLI

KSZ8873MLLI - 3-Port 10/100 Ethernet Switch | Microchip

Microchip KSZ8873MLLI is a highly integrated 3-port managed Ethernet switch with integrated 10/100 PHYs, an MII interface, and I2C and SPI management interfaces in a 64-pin PQFP package measuring 10 x 10 mm. It is designed for cost-sensitive, power-efficient, low-port-count Ethernet systems operating at 10/100 Mbps. A managed Ethernet switch is a network interface IC that combines multiple physical-layer transceivers, frame handling, port management, and configuration logic on one semiconductor. Within the broader hierarchy, the KSZ8873MLLI is an Ethernet switch, managed switch, network interface IC, and integrated circuit. This integration reduces the component count required for a small three-port Ethernet node while allowing software-controlled configuration and status monitoring. The device provides three 10/100 Ethernet ports with integrated PHYs. According to the Microchip KSZ8873 product page, the KSZ8873MML, MLL, FLL, and RLL versions target low-port-count, cost-sensitive, and power-efficient 10/100 Mbps switch systems. The MLL variant used by KSZ8873MLLI supports an MII connection and can be managed through I2C or SPI, making it suitable for embedded control systems that need configurable Ethernet ports without a separate switch controller. The 64-PQFP package provides 64 electrical positions for the three integrated PHYs, management interfaces, clocks, power rails, resets, indicators, and auxiliary I/O. Because the package exposes a substantial number of mixed-signal and digital functions, careful partitioning of analog supply, digital supply, and ground connections is important for stable operation. Decoupling should be placed directly beside the relevant supply pins, while high-speed Ethernet traces require controlled impedance and minimized crosstalk. Typical applications include industrial Ethernet gateways, embedded control systems, factory-automation equipment, IoT controllers, networked sensors, industrial HMI panels, and compact embedded platforms that require three Fast Ethernet ports. The integrated PHY architecture is especially useful where board area and external component count are more important than multi-gigabit performance. Designers should verify the exact MLL pinout, internal bonding configuration, supply sequencing, and supported operating mode before committing a PCB layout. Microchip states that the KSZ8873 RLL, MLL, and FLL versions are not interchangeable because their internal bonding differs, and the operating mode cannot be changed through an external pin or register setting. Firmware must therefore configure the device strictly as an MLL part. This page consolidates the manufacturer product description, interface and package details, sourcing information, substitution constraints, and practical integration guidance. It also distinguishes the MLL implementation from related KSZ8873 versions so engineers can avoid an electrically similar but mechanically and functionally unsuitable substitution.

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KSZ8873MLLV - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8873MLLV

KSZ8873MLLV - 3-Port 10/100 Ethernet Switch | Microchip

The Microchip Technology KSZ8873MLLV is a highly integrated three-port 10/100 Ethernet switch with IEEE 802.3 support, configured through I2C, MII, SPI, or an RMII host interface. It is supplied in a lead-free 64-LQFP package measuring 10 mm by 10 mm. The device also incorporates 10/100 Base-T/TX PHY functions for cost-sensitive, power-efficient, low-port-count network equipment. An Ethernet switch is a semiconductor that connects multiple internal network nodes through frame-based switching instead of requiring a separate software bridge in the host controller. Within the network-interface hierarchy, the KSZ8873 combines a three-port managed switch with integrated Fast Ethernet PHYs. This integration reduces external PHY count, board area, and the number of high-speed signal links crossing a system boundary while retaining dedicated switching resources for multiple Ethernet ports. The KSZ8873MLLV supports 10 Mbps and 100 Mbps operation and includes I2C, MII, SPI, and RMII connectivity. According to the Microchip KSZ8873 product page, the KSZ8873 family is intended for compact, low-port-count systems with an emphasis on low power consumption. Configuration access supports switch monitoring, QoS and CoS packet prioritization, and comprehensive configuration-register access. The device operates from a 1.66 V to 1.94 V core range and a 2.5 V to 3.465 V interface range. A listed supply current of 115 mA makes board-level power budgeting important when the switch is placed beside an application processor, motor-control subsystem, or industrial network controller. The industrial temperature range extends from -40°C to +85°C, supporting industrial and automotive-adjacent deployments where consumer-grade components would be unsuitable. Typical implementations include industrial Ethernet gateways, embedded control panels, network-connected test equipment, automotive body and infotainment Ethernet nodes, and compact PLC communication modules. The RMII option is particularly useful when a host processor requires a parallel Ethernet management path rather than a full MII interface. Layout should preserve the separation of analog PHY circuits, digital switch logic, and crystal-clock or reference-clock distribution. Decoupling must follow the manufacturer’s recommended values, and unused interface pins should be terminated according to the datasheet rather than left to arbitrary bias states. Confirm the exact pin mapping, register defaults, clock requirements, and magnetics recommendations against the current Microchip datasheet before layout release.

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KSZ8873MML - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8873MML

KSZ8873MML - 3-Port 10/100 Ethernet Switch | Microchip

The Microchip KSZ8873MML is a highly integrated 3-port 10/100 Mbps managed Ethernet switch with integrated PHYs, two MII interfaces, and SPI/I2C management in a 64-pin LQFP package measuring 10 x 10 mm. The device targets compact, low-port-count networks requiring integrated switching, advanced power management, and QoS support. An Ethernet switch IC is a semiconductor that connects multiple network nodes, forwards Ethernet frames according to learned MAC addresses, and provides a shared physical network interface. In the product hierarchy, the KSZ8873MML is a managed Ethernet switch with PHY, which belongs to the broader Ethernet interface IC and network-interface semiconductor categories. The verified product information identifies three 10/100 Mbps switch ports, integrated Ethernet PHYs, and configuration through I2C or SPI. Two MII interfaces allow the switching fabric to connect with an external network processor or FPGA. Low power consumption and advanced power management suit cost-sensitive embedded systems, while sophisticated QoS features include IPv6 priority classification. The KSZ8873 family is designed for low-port-count 10/100 Mbps systems where a separate switching chip and multiple physical-layer devices would increase board area, component count, and power consumption. Its 64-LQFP package integrates the network-facing functions, but the two MII paths provide additional integration flexibility for designs requiring host connectivity. Typical applications include industrial Ethernet gateways, embedded network controllers, factory equipment, security systems, and compact communication appliances. A design can connect two copper Ethernet PHYs through the switch while using an MII connection to a host processor. The integrated PHYs reduce external component requirements, and the managed interface allows firmware to configure ports and traffic behavior. Designers should verify the complete MML pinout, clock requirements, magnetics implementation, and power-supply sequencing against the manufacturer datasheet before layout. The MML bonding configuration is specifically not interchangeable with the RLL or FLL variants, so PCB substitution without a manufacturer-supported pinout comparison is not safe. This product record combines verified manufacturer and distributor information with structured application guidance, engineering caveats, and compatibility analysis. It highlights the practical distinction between functional alternatives and true pin-compatible drop-in replacements rather than treating similarly named KSZ8873 variants as interchangeable.

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KSZ8873MMLI - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8873MMLI

KSZ8873MMLI - 3-Port 10/100 Ethernet Switch | Microchip

The Microchip Technology KSZ8873MMLI is a highly integrated three-port Ethernet switch with integrated 10/100 Mb/s PHYs, managed-switch features, and two MII interfaces in a 64-pin LQFP package measuring 10 mm by 10 mm. It is designed for compact, cost-sensitive, power-efficient 10/100 Mb/s switching systems and supports cable diagnostics, programmable LED indication, low-power operation, MII, and RMII. An Ethernet switch is a network-interface device that connects multiple endpoints through one or more internal ports and determines where each frame should be forwarded. Within the network hierarchy, the KSZ8873MMLI combines Ethernet switching, physical-layer transceivers, and host-facing management interfaces in a single integrated circuit. This integration reduces the number of separate interface components required in small industrial, automotive, and embedded Ethernet designs. The primary headline capabilities are three 10/100 Mb/s switch ports, integrated PHYs, and two MII interfaces. The 64-pin LQFP package provides 64 physical connections for power, Ethernet interfaces, management signals, clocking, and configuration functions. According to the manufacturer product page, the KSZ8873 family is intended for low-port-count, cost-sensitive, power-efficient switch systems rather than high-port-count enterprise switching. Management and diagnostics distinguish the KSZ8873 from a basic unmanaged switch. Its cable-diagnostics feature supports fault analysis on copper links, while programmable LED indication allows port activity or link status to be presented through the device's LED controls. The family also supports MII and RMII, allowing it to interface with Ethernet controllers using either parallel management-oriented signals or the reduced pin-count RMII convention. Typical uses include compact embedded Ethernet switches, automotive Ethernet connectivity, industrial control networks, and communication equipment requiring three integrated 10/100 Mb/s ports. The automotive-rated 200 Mb/s variant is suited to cost-sensitive vehicle-network designs where multiple Fast Ethernet links must be consolidated without using a large backplane switch. Designers should confirm the exact pin functions, clock requirements, interface mode, and external component requirements from the manufacturer datasheet before layout. MII and RMII are not automatically interchangeable at the board level, and the two MII interfaces on this device require careful signal and clock routing. This page combines the family-level functional information with the exact KSZ8873MMLI package identity, sourcing guidance, design notes, and an explicit treatment of replacement constraints. It also distinguishes confirmed product facts from engineering information that still requires validation against the manufacturer documentation.

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KSZ8873RLL - 3-Port 10/100 Managed Switch | Microchip
KSZ8873RLL

KSZ8873RLL - 3-Port 10/100 Managed Switch | Microchip

The Microchip Technology KSZ8873RLL is an integrated three-port 10/100 Mbps managed Ethernet switch with integrated PHYs, I2C and SPI interfaces, MII and RMII connectivity, and a 64-pin LQFP package measuring 10 mm by 10 mm. It is designed for compact, power-efficient, low-port-count networking systems operating from 2.5 V and 3.3 V supplies. An Ethernet switch is a network-interface semiconductor that connects multiple physical-layer ports and forwards Ethernet frames according to destination addresses. The KSZ8873RLL belongs to the managed-switch hierarchy: Ethernet switch, network interface controller, interface IC, and semiconductor. Its integrated PHYs reduce board space and external component count in cost-sensitive equipment that does not require a high-port-count switching fabric. Key features include three integrated 10/100 Mbps ports, support for 10/100BASE-T/TX applications, and configuration through I2C or SPI. The available source data identifies both MII and RMII interfaces, allowing the device to serve systems using a parallel media-independent interface or the more compact reduced MII. Its stated operating-temperature range is 0°C to +70°C, which targets commercial equipment rather than extended industrial or automotive environments. The KSZ8873RLL combines three Ethernet ports in one small-footprint IC, reducing the need for separate PHY components and board routing. A 100 Mbps data rate suits legacy Fast Ethernet infrastructure, embedded control networks, industrial equipment, and cost-sensitive network interfaces where full Gigabit Ethernet throughput is unnecessary. Manufacturer information describes the device as a power-efficient 10/100 Mbps switch system solution. Typical uses include compact Ethernet switches, embedded network bridges, industrial control equipment, set-top and consumer networking products, and systems requiring one Fast Ethernet uplink plus internal switched ports. Its I2C and SPI configuration paths can support host processors that need programmable switch behavior without dedicating many host GPIO pins. Designers should verify the exact MII or RMII configuration, reference-clock arrangement, magnetics interface, and exposed-pad connection against the manufacturer datasheet before layout. Place the 164-ohm clock-termination resistors near the device when the reference-design guidance calls for them, and change the suggested value to 33 ohms when PHY MII mode is selected. This page consolidates the verified manufacturer and distributor details, documents supported family substitutions, compares package and functional characteristics, and adds implementation guidance that is not presented as a single combined summary in the original search results.

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KSZ8873RLLI - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8873RLLI

KSZ8873RLLI - 3-Port 10/100 Ethernet Switch | Microchip

The Microchip Technology KSZ8873RLLI is a highly integrated three-port managed Ethernet switch with integrated 10/100 Base-T/TX PHYs, supporting data rates up to 100 Mbps and operating from 1.8 V, 2.5 V, or 3.3 V supplies. The device combines an Ethernet switch, three physical-layer interfaces, and host-control connectivity in a compact LQFP-48 package. Its interface options include I2C, SPI, and RMII, allowing it to suit embedded network equipment, industrial controllers, and cost-sensitive Ethernet systems. An integrated managed Ethernet switch connects multiple physical-layer ports through one switching engine, reducing the need for discrete PHYs, magnetics interfaces, and separate switch controllers. The KSZ8873 series is positioned for low-port-count, power-efficient 10/100 Mbps networks where three integrated PHYs provide a compact bridge between copper Ethernet interfaces and a host processor or embedded control system. Key features include three integrated 10/100 Ethernet ports, operation at up to 100 Mbps, a typical 115 mA supply current, and support for 1.8 V, 2.5 V, or 3.3 V supply levels. The combination of I2C and SPI host interfaces supports configuration access from embedded processors, while the RMII interface provides a dedicated connection to a network controller. The LQFP-48 package supports conventional surface-mount assembly and thermal copper-area integration. The device uses a mixed 1.8 V, 2.5 V, and 3.3 V supply architecture, allowing system designers to align core and interface voltage domains. A 115 mA typical operating current is particularly useful for compact embedded platforms where the Ethernet function must coexist with power-limited processors and sensors. The three integrated PHYs also reduce board area by consolidating three copper-network interface sections into one switching IC. Typical applications include industrial Ethernet gateways, embedded control systems, set-top and network appliances, instrumentation platforms, and low-cost Ethernet bridges. The switch is especially useful when a board needs several 10/100 ports but a higher-speed multi-gigabit switching architecture would add unnecessary cost, power, and complexity. Designers should account for the specified operating temperature of -40°C to +85°C and verify every power rail against the manufacturer's recommended sequencing and decoupling requirements. Ethernet magnetics, center-tap capacitors, impedance-controlled differential pairs, and connector layout remain essential even when the PHY and switch functions are integrated into one package. This product overview combines port, interface, voltage, packaging, and lifecycle information with application guidance and engineering selection notes. It also identifies the strength and limitations of available drop-in alternatives, helping engineers validate footprint compatibility, operating conditions, and host-interface requirements before making a PCB or sourcing decision.

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KSZ8893FQL - 3-Port 10/100 Ethernet Switch | Microchip
KSZ8893FQL

KSZ8893FQL - 3-Port 10/100 Ethernet Switch | Microchip

The Microchip Technology KSZ8893FQL is a highly integrated single-chip three-port Fast Ethernet switch with fiber support, three MAC units, a non-blocking switch fabric, and integrated 10/100 transceivers. It supports copper and fiber media conversion, with 10/100 Base-T/TX and 10/100 Base-FL/SX connectivity, and is packaged in a 128-pin PQFP measuring 14 mm by 20 mm. An Ethernet switch is a Layer 2 network-semiconductor device that receives Ethernet frames on one port, processes them through a switching fabric, and forwards them to another port. The KSZ8893FQL belongs to the managed Ethernet switch hierarchy, combining media access control, physical-layer transceivers, and switching functions for industrial, communications, and embedded network equipment. Key features include support for two 10/100 copper transceivers, fiber connectivity, three MAC units, a non-blocking switch fabric, and a Layer 2 managed-switch architecture. The KSZ8893FQL supports IEEE 802.3u auto-negotiation, allowing link partners to select a common operating mode. Its single-ended fiber-module connections are identified as TXM1 on pin 49 and RXM1 on pin 46. Technically, the device combines mixed-signal low-power Ethernet transceivers with frame-buffer and switching resources. The supplied manufacturer documentation describes TS-1000 Operations, Administration and Maintenance support, while the product listing identifies both I2C and SPI management interfaces. These capabilities position it for low-port-count systems requiring copper-to-fiber media conversion or managed Layer 2 connectivity. Typical uses include industrial Ethernet bridges, serial-to-Ethernet equipment, embedded control networks, factory automation gateways, and compact optical media converters. In a copper-to-fiber link, the switch can bridge a 10/100 Base-T network segment to a 100BASE-FL or 100BASE-SX module without requiring a separate external Ethernet switch. Designers must account for the large 128-pin PQFP footprint, provide suitable fiber-interface circuitry for the selected optical module, and validate management firmware against the supported register set. Availability, operating-temperature grades, EMC performance, and some electrical limits should be confirmed from the manufacturer datasheet before production release. This product page combines verified manufacturer and distributor information with application guidance, comparison data, and design considerations that help engineers evaluate the KSZ8893FQL for managed Fast Ethernet and fiber-conversion designs.

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KSZ8893MBL - 3-Port 10/100 Managed Switch | Microchip
KSZ8893MBL

KSZ8893MBL - 3-Port 10/100 Managed Switch | Microchip

The Microchip Technology KSZ8893MBL is a 3-port 10/100 Mbps managed Layer 2 Ethernet switch with integrated PHYs, available in a 100-pin LFBGA package and configured through I2C or SPI interfaces. It supports 10/100 Base-FX, Base-T, and Base-TX connectivity, providing a compact solution for low-port-count, cost-sensitive Ethernet systems. An Ethernet switch is a networking semiconductor that receives Ethernet frames on one port and forwards them to the appropriate destination port. The KSZ8893 belongs to the managed-switch hierarchy, where Layer 2 switching is combined with traffic-management functions rather than basic frame replication. Its management capabilities include rate limiting, tag- and port-based VLAN support, QoS priority, MIB counters, and CPU control and data interfaces. The KSZ8893MQL and KSZ8893MBL versions integrate three 10/100 Ethernet PHYs with a managed switching engine. Supporting RMII, MII, and SNI interfaces allows connection to a host processor or network controller. I2C and SPI host interfaces provide access to configuration and status registers, while frame buffers support the managed-switch architecture. These functions make the device suitable for compact industrial, embedded, and communications equipment requiring three Ethernet ports without a discrete switch ASIC. The KSZ8893MBL is particularly useful where port count is intentionally low and board area is constrained. Its 100-LFBGA package supports dense multilayer layouts, but it requires careful escape-routing and high-speed layout techniques. Differential Ethernet pairs should be routed as controlled-impedance transmission lines, with magnetics or appropriate PHY-side network interfaces implemented according to the system reference design. Typical uses include industrial controllers, embedded logging equipment, computing modules, factory automation nodes, serial-to-Ethernet systems, and compact network access products. In these applications, the integrated PHYs reduce the number of external Ethernet magnetics and interface components while managed features allow traffic prioritization and controlled access to shared uplink bandwidth. The primary design consideration is that the MBL ordering code and its 100-pin LFBGA land pattern must be matched exactly during PCB and assembly planning. Power, ground, RMII or MII signals, management buses, and all three Ethernet channels require careful partitioning. Compliance and exact operating limits should be confirmed against the manufacturer datasheet before production release. This page consolidates the verified distributor information, manufacturer documentation, package constraints, pricing indicator, and available cross-reference evidence. It also distinguishes the KSZ8893MBL from related ordering codes and clearly identifies engineering data that still requires confirmation from the full manufacturer datasheet.

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KSZ8893MBLI - 3-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8893MBLI

KSZ8893MBLI - 3-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8893MBLI is a highly integrated, three-port Layer 2 managed Ethernet switch for 10/100 Mbps systems, with I2C and SPI control interfaces in a 100-pin LFBGA package. It supports RMII, MII, and SNI interfaces for connection to a host processor, while each switched port supports 10/100 Base-TX and Base-FX connectivity. An Ethernet switch is a semiconductor that connects multiple network endpoints through a dedicated frame-forwarding datapath. The managed-switch category extends basic Layer 2 forwarding with configuration, traffic-control, and status features. Within the hierarchy, KSZ8893MBLI is an Ethernet switch, then a managed Layer 2 switch, then a network interface IC and an integrated circuit for communications equipment. The KSZ8893MBLI integrates rate limiting, tagged and port-based VLAN support, QoS priority, port management, and Management Information Base counters. These functions allow a host processor to configure traffic handling and monitor switch activity through a serial management interface. The I2C and SPI interfaces provide alternatives for embedded system integration, while RMII, MII, and SNI connectivity support different processor and PHY arrangements. The KSZ8893 family is positioned for cost-sensitive, low-port-count 10/100 Mbps networks. A three-port configuration can support multiple wired endpoints without requiring a larger switch, while Layer 2 management features help implement controlled industrial, communications, and embedded Ethernet equipment. The SNI interface is particularly relevant to designs where an integrated network interface on the host supplies physical-layer connectivity. The KSZ8893MBLI is offered in a compact 100-pin LFBGA package, supporting space-constrained industrial and embedded designs. Layout requires careful high-speed trace routing, solid supply distribution, and effective decoupling. Use the manufacturer’s pin-description table and reference design guidance when assigning signals and placing bypass capacitors, especially for RMII, MII, and SNI implementations. This page combines the manufacturer’s device positioning with practical application guidance, interface-selection context, and verified lifecycle information. It also identifies where design engineers should consult the official datasheet for the complete pin list, electrical limits, register map, layout guidance, and device-specific recommendations before releasing a PCB.

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KSZ8893MQL - 3-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8893MQL

KSZ8893MQL - 3-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip KSZ8893MQL is a highly integrated three-port 10/100 Mbps layer 2 managed Ethernet switch with integrated transceivers, MAC units, a non-blocking switch fabric, address lookup, and frame-buffer memory. It supports two 10/100 transceivers, with one PHY also supporting 100BASE-FX fiber connectivity, and is housed in a 128-pin PQFP package measuring 14 x 20 mm. The device is intended for low-port-count, cost-sensitive 10/100 Mbps switch systems. A managed Ethernet switch is a Layer 2 network device that forwards Ethernet frames between multiple ports while adding features such as VLAN tagging, port-based and tag-based prioritization, rate limiting, QoS, management access, and auto-negotiation. The KSZ8893MQL combines those switch-management functions with PHY transceivers, reducing the component count and board area required for embedded network equipment. The KSZ8893MQL supports 10BASE-T and 100BASE-TX copper links, while one integrated PHY supports 100BASE-FX. According to the Microchip product page and manufacturer datasheet, the device provides an extensive feature set for cost-sensitive switching systems, including rate limiting, tag/port-based VLAN support, QoS priority, and management capabilities. Its interface supports I2C and SPI control, as identified by distributor listings. The switch fabric is non-blocking and includes a dedicated address-lookup engine and on-chip frame-buffer memory. These resources support simultaneous frame handling across the integrated ports while reducing the processing burden on an external host processor. The device can therefore serve as the central Ethernet switching element in industrial control, embedded instrumentation, communications equipment, and compact network-edge systems. The KSZ8893MQL operates from a 3.3 V supply and supports non-volatile configuration storage and an enable or shutdown function, according to the verified distributor data. It also conforms to the IEEE 802.3u auto-negotiation protocol, allowing link partners to select the best common operating mode. The 128-PQFP package is surface mount and lead-free. Designers should preserve the required separation between copper Ethernet magnetics, fiber circuitry, power distribution, and the digital management interface. The manufacturer datasheet should be used for exact pin assignments, electrical limits, timing, register definitions, and layout guidance. The KSZ8893MQL is most appropriate when a design needs a small, managed three-port 10/100 Ethernet switch with integrated copper and optional fiber interfaces rather than a higher-port-count or higher-speed switch. This page combines the verified manufacturer, distributor, and cross-reference information with package-focused selection guidance, commercial data, and practical differentiation between documented same-family configurations.

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KSZ8893MQLI - 3-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8893MQLI

KSZ8893MQLI - 3-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8893MQLI is an integrated three-port 10/100 Mbps Layer 2 managed Ethernet switch with integrated PHYs, CPU control and data interfaces, and support for 10/100 Base-FX/T/TX connectivity. The device is supplied in a 128-PQFP package measuring 14 x 20 mm and includes I2C and SPI host interfaces for configuration and control. 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.

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KSZ8895FMQ - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895FMQ

KSZ8895FMQ - 5-Port 10/100 Managed Ethernet Switch | Microchip

Microchip Technology KSZ8895FMQ is a highly integrated, automotive-qualified, Layer 2 managed five-port Ethernet switch with 10/100BASE-T/TX physical interfaces and MII/RMII host connectivity, housed in a 128-pin PQFP package measuring 14 x 20 mm. It combines five 10/100-Mbps Ethernet ports, switching, physical-layer transceivers, traffic management, and power-management functions in one device. An Ethernet switch is a semiconductor that connects multiple physical-layer network ports and forwards Ethernet frames between them. The KSZ8895 belongs to the Layer 2 Ethernet-switch category, with managed traffic-control capabilities positioned above basic unmanaged Ethernet switching. Its integrated 10/100BASE-T/TX transceivers reduce the need for separate PHY components, while MII and RMII interfaces connect the switch to a host processor or embedded controller. Key features include five integrated 10/100-Mbps Ethernet ports, Layer 2 management, automotive qualification, low-power operation, advanced power management, flexible configuration, and quality-of-service support. The manufacturer datasheet also describes tagged-port processing, programmable rate limiting, priority-ratio support, four-queue prioritization, Rapid Spanning Tree Protocol support, packet filtering, and on-chip termination. These functions support cost-conscious network equipment while reducing external component count and board area. The KSZ8895 family integrates Micrel physical transceiver and switch technology into a single IC. Multiple packet filters, QoS queues, and spanning-tree features allow system designers to shape traffic behavior without implementing those policies in the host processor. The MII interface supports conventional parallel network-controller connectivity, while RMII reduces the number of host interface signals in designs where it is suitable. Typical uses include automotive Ethernet gateways, industrial Ethernet controllers, embedded network appliances, print servers, IP cameras, set-top equipment, and industrial control systems. The five-port arrangement supports connecting several 10/100-Mbps devices through one switched network segment, while the managed features are useful where deterministic prioritization or packet filtering is more important than a simple hub or basic switch. Designers should pay particular attention to PHY layout, 10/100BASE-TX magnetics and termination, RMII timing, MII signal integrity, decoupled supply rails, and the manufacturer’s recommended magnetic-component network. Microchip’s KSZ8895 documentation and migration application notes should be reviewed before changing between KSZ8895 ordering codes because functional replacement does not eliminate checks for package, temperature grade, firmware, register, and system-software requirements. This page consolidates verified distributor listings, manufacturer information, the KSZ8895 migration reference, package details, and practical selection guidance. It also distinguishes confirmed drop-in family replacements from unsupported assumptions, helping engineers identify the information that still requires datasheet and PCB-level verification before procurement.

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KSZ8895FMQTR - 5-Port 10/100 Managed Ethernet Switch | Microchip (Tape & Reel)
KSZ8895FMQTR

KSZ8895FMQTR - 5-Port 10/100 Managed Ethernet Switch | Microchip (Tape & Reel)

Microchip Technology KSZ8895FMQTR is a highly integrated, automotive-qualified, Layer 2 managed five-port Ethernet switch with 10/100BASE-T/TX physical interfaces and MII/RMII host connectivity, housed in a 128-pin PQFP package measuring 14 x 20 mm. It combines five 10/100-Mbps Ethernet ports, switching, physical-layer transceivers, traffic management, and power-management functions in one device. An Ethernet switch is a semiconductor that connects multiple physical-layer network ports and forwards Ethernet frames between them. The KSZ8895 belongs to the Layer 2 Ethernet-switch category, with managed traffic-control capabilities positioned above basic unmanaged Ethernet switching. Its integrated 10/100BASE-T/TX transceivers reduce the need for separate PHY components, while MII and RMII interfaces connect the switch to a host processor or embedded controller. Key features include five integrated 10/100-Mbps Ethernet ports, Layer 2 management, automotive qualification, low-power operation, advanced power management, flexible configuration, and quality-of-service support. The manufacturer datasheet also describes tagged-port processing, programmable rate limiting, priority-ratio support, four-queue prioritization, Rapid Spanning Tree Protocol support, packet filtering, and on-chip termination. These functions support cost-conscious network equipment while reducing external component count and board area. The KSZ8895 family integrates Micrel physical transceiver and switch technology into a single IC. Multiple packet filters, QoS queues, and spanning-tree features allow system designers to shape traffic behavior without implementing those policies in the host processor. The MII interface supports conventional parallel network-controller connectivity, while RMII reduces the number of host interface signals in designs where it is suitable. Typical uses include automotive Ethernet gateways, industrial Ethernet controllers, embedded network appliances, print servers, IP cameras, set-top equipment, and industrial control systems. The five-port arrangement supports connecting several 10/100-Mbps devices through one switched network segment, while the managed features are useful where deterministic prioritization or packet filtering is more important than a simple hub or basic switch. Designers should pay particular attention to PHY layout, 10/100BASE-TX magnetics and termination, RMII timing, MII signal integrity, decoupled supply rails, and the manufacturer’s recommended magnetic-component network. Microchip’s KSZ8895 documentation and migration application notes should be reviewed before changing between KSZ8895 ordering codes because functional replacement does not eliminate checks for package, temperature grade, firmware, register, and system-software requirements. This page consolidates verified distributor listings, manufacturer information, the KSZ8895 migration reference, package details, and practical selection guidance. It also distinguishes confirmed drop-in family replacements from unsupported assumptions, helping engineers identify the information that still requires datasheet and PCB-level verification before procurement.

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KSZ8895FQXC - 5-Port Managed Ethernet Switch | Microchip
KSZ8895FQXC

KSZ8895FQXC - 5-Port Managed Ethernet Switch | Microchip

The Microchip KSZ8895FQXC is a highly integrated, Layer 2 managed five-port Ethernet switch with 10/100 Base-T/TX PHY interfaces and support for MII and RMII host interfaces. It is packaged in a 128-pin PQFP measuring 14 x 20 mm and is associated with the automotive-qualified KSZ8895 family. Its five-port configuration consolidates multiple Ethernet links into one switching device, reducing component count and simplifying board-level network design. An Ethernet switch is a Layer 2 network semiconductor that forwards Ethernet frames between connected ports according to MAC addresses. The KSZ8895FQXC integrates five 10/100 Ethernet ports with a configurable managed-switch architecture, allowing multiple embedded devices or computers to share a local Ethernet segment. MII and RMII interfaces connect the switch to a host controller or system-on-chip, while the integrated PHYs simplify implementation of copper Ethernet connections. The KSZ8895 family provides managed Layer 2 switching, programmable LED indication, cable diagnostics, optical-fiber support, and a low-power mode, as identified in the Microchip product description and distributor feature listing. These capabilities make the device suitable for automotive Ethernet networks, industrial Ethernet equipment, embedded gateways, and compact network appliances. A managed switch also provides better visibility into port operation and link diagnostics than a basic unmanaged switch. The FQXC ordering designation identifies the device variant offered in a 128-pin PQFP. The package provides 128 electrical positions and is substantially larger than a typical QFN network switch, making the KSZ8895FQXC especially appropriate for designs that prioritize a high pin count and legacy-style leaded-package assembly rather than minimal PCB area. Product-family variants use related package and temperature-grade options, but compatibility must be checked against the exact ordering code. Typical applications include automotive infotainment and vehicle Ethernet gateways, industrial controllers with multiple 10/100 ports, embedded Ethernet concentrators, and low-power network appliances. The switch can connect several physical network segments to one host processor while providing programmable port-status indication and cable diagnostics. Designers should reserve suitable Ethernet magnetics and compliant connector structures for each copper port and ensure the host interface timing is correctly configured. A key design consideration is thermal and layout planning for a 128-pin device. Place the controller and memory components needed by the selected platform arrangement according to the manufacturer reference design, keep high-speed host traces short, and provide continuous ground-plane connectivity. Validate magnetics, impedance-controlled traces, isolation requirements, and automotive EMC constraints before releasing the PCB. This product page combines the exact KSZ8895FQXC ordering information with same-package family alternatives, interface and package comparisons, application guidance, and practical PCB considerations. It also distinguishes confirmed drop-in candidates from options that require engineering review, helping buyers identify where a direct replacement is appropriate and where a redesign is necessary.

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KSZ8895FQXI - 5-Port 10/100 Managed Ethernet Switch | Microchip Technology
KSZ8895FQXI

KSZ8895FQXI - 5-Port 10/100 Managed Ethernet Switch | Microchip Technology

The Microchip Technology KSZ8895FQXI is an automotive-qualified, highly integrated Layer 2 managed five-port Ethernet switch with integrated 10BASE-T/100BASE-TX physical-layer transceivers and MII/RMII interfaces. It operates with a 3.3 V operating voltage and is housed in a 128-pin PQFP package measuring 14 mm by 20 mm. The switch supports five 10/100 Ethernet ports and is designed to reduce system cost by integrating network-interface functions that otherwise require discrete PHY and switching components. An Ethernet switch is a Layer 2 networking semiconductor that receives Ethernet frames on one port and forwards them to the appropriate destination port using MAC-address information. The KSZ8895 belongs to the broader hierarchy of Ethernet interface controllers, network switches, Layer 2 devices, and integrated network semiconductors. Its managed architecture allows a host processor or network controller to configure port behavior, while its MII and RMII interfaces support integration with embedded processors, field-programmable gate arrays, application processors, and industrial controllers. The KSZ8895FQXI provides five integrated 10/100 Ethernet ports, MII and RMII connectivity, and a single 3.3 V operating voltage. Its 128-PQFP 14 x 20 mm package exposes the switch, copper-physical-layer, control, management, clock, and power interfaces through 128 contacts. The automotive qualification indicated by Microchip makes the device relevant to vehicle-network designs as well as industrial, communications, and embedded applications requiring a compact managed Ethernet switch. A single-chip switching design can also reduce board area, external PHY count, and system-level assembly complexity. Microchip's integrated 10/100 Ethernet-switch implementation combines the 100BASE-TX drivers and 10BASE-T drivers so both can use the same magnetics. The 10BASE-T driver is incorporated into the 100BASE-T driver, with internally wave-shaped and pre-emphasized outputs having a typical 2.3 V amplitude. This integration supports shared copper-magnetics designs while preserving separate logical support for 10 Mb/s and 100 Mb/s operation. Management features are included at the Layer 2 level rather than requiring a separate switch controller for basic port management. Typical applications include automotive infotainment and in-vehicle networking, industrial Ethernet gateways, factory automation controllers, building-automation equipment, communications equipment, and embedded systems that need several 10/100 ports behind one processor interface. MII is useful when the connected host requires parallel data and control signals, while RMII reduces the number of interface signals in designs where pin density is constrained. The integrated copper PHYs also support designs intended to connect directly to Ethernet magnetics and RJ45 front ends. Hardware implementation requires careful attention to the manufacturer's KSZ8895FQX Hardware Design Checklist. The checklist specifies the RJ45 transmit-channel connections, including TX+ on RJ45 pin 3, TX- on RJ45 pin 6, and a 75-ohm series termination path through a 1000 pF, 2 kV capacitor to chassis ground. These network-interface details should be implemented exactly as described in the manufacturer document rather than inferred from generic Ethernet layouts. This product page combines the confirmed five-port 10/100 switch functionality, package information, manufacturer guidance, qualified replacement relationships, and practical hardware-design guidance. It is intended to help engineers identify the correct Microchip orderable variant, plan the MII or RMII host connection, and evaluate whether the same-package KSZ8895 family can satisfy a lifecycle or sourcing requirement without changing the PCB footprint.

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KSZ8895MLUB - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895MLUB

KSZ8895MLUB - 5-Port 10/100 Managed Ethernet Switch | Microchip

Microchip Technology KSZ8895MLUB is an automotive-qualified, highly integrated Layer 2 managed Ethernet switch with five ports, 10/100 Mbps Ethernet performance, and a 128-LQFP package measuring 14 x 14 mm. It integrates five MAC units, four 10/100BASE-TX PHYs, a non-blocking switch fabric, and management interfaces including I2C and SPI. An Ethernet switch is a Layer 2 network device that receives Ethernet frames on one port and forwards them to the appropriate destination port. The managed-switch category adds address learning, frame filtering, traffic control, and configuration functions to the basic frame-forwarding hierarchy. The KSZ8895MLUB combines these network functions with integrated physical-layer transceivers, reducing the component count required for a compact Ethernet switching subsystem. The device provides four integrated 10/100BASE-TX PHYs and five MACs within a single package. Its internal architecture includes a dedicated address lookup engine, an on-chip frame buffer, and a high-speed non-blocking switch fabric. I2C and SPI interfaces allow a host processor to configure switch functions, while an internal core power controller supports system power management. On-chip termination is intended to reduce the system cost of cost-sensitive 10/100 Mbps five-port switch designs. The KSZ8895 family is qualified to meet AEC-Q100 requirements for automotive applications. This qualification is important for vehicle-network equipment exposed to demanding temperature and reliability conditions. The combination of five MACs, four integrated PHYs, managed Layer 2 operation, and mixed-signal PHY technology supports compact Ethernet switches for automotive infotainment, vehicle connectivity, industrial networking, and embedded communications systems. Typical implementations use the KSZ8895MLUB where multiple 10/100BASE-TX links must be consolidated through a compact managed switch. It can connect several embedded Ethernet endpoints to an uplink while the host controller handles configuration, status monitoring, and network policy. Its four integrated PHYs reduce the need for external copper transceivers, although one interface position may require additional PHY support depending on the system configuration. When designing a PCB, place the 128-LQFP device to minimize trace lengths from each Ethernet magnetic-interface component and keep high-speed digital and analog supply paths well separated. Follow the pin-description table and recommended decoupling network in the manufacturer datasheet. Provide adequate copper area and thermal paths around the LQFP, and verify magnetics, impedance, reset sequencing, and management-bus pullups against the application circuit. This page combines the manufacturer datasheet, distributor listings, package information, automotive qualification details, and cross-reference findings in a format that supports design selection, PCB planning, sourcing, and direct engineering comparison. The listed alternatives are limited to parts for which package and pin compatibility can be established rather than inferred from broad Ethernet-switch similarity.

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KSZ8895MQ - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895MQ

KSZ8895MQ - 5-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8895MQ is an integrated five-port 10/100BASE-T/TX Layer 2 managed Ethernet switch with MII, RMII, or SNI connectivity and I2C/SPI configuration support. It operates from a 3.15 V to 3.45 V supply, supports data rates up to 100 Mbps, and is packaged in a 128-pin PQFP measuring 14 mm by 20 mm. An Ethernet switch is a network-semiconductor device that receives frames on one port and forwards them to selected destination ports. The five-port KSZ8895MQ integrates five 10/100 Ethernet ports, Layer 2 switching, port management, and advanced power-management functions. Within the broader networking hierarchy, it belongs to Ethernet controllers, interface ICs, network semiconductors, and integrated circuits. The KSZ8895MQ supports five integrated 10/100 ports and one MII interface according to the verified distributor description. MII supplies parallel Ethernet data and control signals, while RMII and SNI offer reduced-pin serialization options when supported by the connected host. I2C and SPI interfaces provide configuration and management access. Advanced power management, flexible configuration, and Layer 2 QoS features are identified by the manufacturer documentation. The device is designed for cost-sensitive, power-efficient 10/100 Mbps systems by combining Micrel physical-transceiver and switch technology on one IC. Its 3.3 V-class operating range and integrated five-port architecture reduce the component count required for embedded switching. The automotive-qualified KSZ8895 family also targets network equipment where managed Layer 2 functionality and power control are useful. Typical uses include industrial Ethernet control, automotive networking, embedded gateways, print systems, IP telephones, and other equipment that needs a compact five-port Fast Ethernet switch. Designers should verify the exact protocol mode, strap configuration, clock source, magnetics, termination, and layout requirements in the manufacturer datasheet before layout release. Layered QSFP-style magnetics, exact 50-ohm impedance geometry, and differential-pair routing according to the manufacturer reference design help preserve Ethernet signal quality. Sufficient supply decoupling and thermal copper are equally important because integrated transceivers and switching logic concentrate heat within the 128-pin surface-mount package. This page combines the verified product identity, electrical limits, interfaces, package data, replacement information, and application guidance with practical design notes. It also distinguishes confirmed drop-in replacements from merely similar Ethernet devices, helping engineers compare alternatives without assuming interchangeability.

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KSZ8895MQI - 5-Port 10/100 Ethernet Switch | Microchip
KSZ8895MQI

KSZ8895MQI - 5-Port 10/100 Ethernet Switch | Microchip

The Microchip Technology KSZ8895MQI is a highly integrated, Layer 2 managed, five-port 10/100 Ethernet switch with one MII interface, supplied in a 128-pin PQFP package measuring 14 x 20 mm. It supports 100 Mbps Ethernet operation according to IEEE 802.3 and IEEE 802.3u, and the KSZ8895 family provides fiber support. The part is identified by distributors as an industrial-grade Ethernet interface IC. An Ethernet switch is a Layer 2 network device that connects multiple endpoints through dedicated internal switching paths and forwards Ethernet frames using hardware-assisted address processing. Within the broader product hierarchy, the KSZ8895MQI is an Ethernet interface controller, an interface IC, and a semiconductor designed for embedded networking systems. Its five-port architecture allows a single device to connect multiple 10/100 endpoints while reducing the number of discrete network components required by a product. The main engineering features include five integrated 10/100 Ethernet switch ports, Layer 2 managed-switch operation, an MII interface for connection to a host processor, and support for 100 Mbps data rates. The verified operating-voltage information identifies 1.14 V and 1.26 V supply levels. The 128-PQFP package provides a high pin count for the integrated switching, media, and management interfaces, while its 14 x 20 mm body is substantially larger than the compact packages commonly used for single-port Ethernet PHYs. The KSZ8895 family is designed to reduce total system cost by consolidating multiple Ethernet switching functions into one integrated circuit. Its MII interface permits connection with compatible processor or controller hardware, avoiding the need for a separate physical-layer arrangement solely for switched connectivity. The managed Layer 2 feature set distinguishes the device from basic unmanaged switches and supports integration into embedded equipment requiring controlled Ethernet forwarding behavior. Typical applications include industrial Ethernet controllers, automotive or transportation networking equipment, embedded routers, factory automation gateways, and network interface modules. The five-port arrangement is especially useful where several wired endpoints must share a central switching function while an external processor accesses the switch through MII. These uses align with the part's industrial-grade designation and the KSZ8895 family's system-cost reduction objectives. A key design consideration is package and interface verification. The KSZ8895MQI uses a 128-pin PQFP footprint, so a replacement must match both the physical package and relevant pin functions; functional similarity alone is insufficient. Power, clock, media-interface, and management signals must be checked against the manufacturer documentation before layout release or schematic substitution. This page consolidates verified manufacturer and distributor information, documented migration alternatives, application guidance, comparison parameters, and PCB-focused selection notes. It also distinguishes exact switch characteristics from data requiring verification, helping engineers make a defensible sourcing and design decision without treating electrically similar but non-pin-compatible parts as drop-in replacements.

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KSZ8895MQXC - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895MQXC

KSZ8895MQXC - 5-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8895MQXC is an automotive-qualified, highly integrated Layer 2 managed Ethernet switch with five 10/100BASE-T/TX ports, MII and RMII host interfaces, and I2C and SPI management connectivity in a 128-pin PQFP package measuring 14 x 20 mm. The device consolidates five Fast Ethernet PHYs, a managed switching core, and host-side interfaces into one network-connectivity device. A managed Ethernet switch is a semiconductor that connects multiple Ethernet endpoints through an internal Layer 2 forwarding engine. The KSZ8895MQXC occupies the managed switch and Ethernet interface IC category, combining copper Ethernet PHYs with configurable traffic management. This integration reduces the number of discrete network components required in industrial, automotive, communications, and embedded equipment while supporting centralized configuration over I2C or SPI. Key features include five 10/100 Mb/s Ethernet ports, MII and RMII connectivity, and a Layer 2 managed switch architecture. According to the Microchip product page, the KSZ8895 family is automotive qualified and designed to reduce system cost. The MQX ordering variant supports managed switch operation with MII and RMII interfaces, while the family also includes variants offering related clock-output or fiber-oriented connectivity options. The KSZ8895 integrates five 10/100BASE-TX transceivers with a Layer 2 switch fabric, allowing each port to connect to an Ethernet PHY, magnetics-based network interface, or other suitable 10/100BASE-T endpoint. Its MII interface supports parallel host connectivity, while RMII reduces the number of host-side signal lines by using a reduced pin interface. Management access through I2C and SPI supports configuration of operating parameters without requiring discrete configuration storage for basic switch functions. Typical applications include automotive Ethernet gateways, industrial Ethernet controllers, embedded communications equipment, network interface cards, and terminal systems requiring several Fast Ethernet ports in one device. The 128-pin PQFP package provides adequate routing space for five integrated PHYs, the switch core, management interfaces, clocking, power, and ground connections. A new board design should follow the KSZ8895MQX Hardware Design Checklist for termination, layout, and interface guidance. Layout and signal-integrity discipline are critical because five integrated PHYs place multiple high-speed differential and digital signals on one PCB. Place the device in accordance with the manufacturer hardware checklist, provide the required local bypass capacitors, route Ethernet differential pairs as controlled-impedance nets, and keep switching and clock sources away from sensitive analog and magnetics interfaces. This product page brings together the verified manufacturer product description, family datasheet, hardware design checklist, lifecycle-oriented family information, package details, and application guidance. It also distinguishes directly related family variants while preserving the important engineering distinction between a qualified drop-in substitute and a device with different interface or clock behavior.

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KSZ8895MQXI - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895MQXI

KSZ8895MQXI - 5-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8895MQXI is a highly-integrated, Layer-2 managed, five-port 10/100 Mbps Ethernet switch housed in a 128-pin PQFP (14x20 mm) package. It provides five integrated 10/100Base-TX PHYs with MII/RMII host interface options, I2C and SPI management, and is qualified for automotive and industrial environments. The device is designed to reduce system BOM cost by integrating magnetics-center-tap terminations, on-chip low-dropout regulators, and a 1.4 Gbps non-blocking switch fabric in a single IC. What is a Layer-2 managed Ethernet switch? A Layer-2 managed Ethernet switch is a networking IC that operates at the data-link layer (MAC) of the OSI model, forwarding Ethernet frames between ports based on MAC address tables while supporting management features such as VLAN tagging (IEEE 802.1Q), QoS prioritization (IEEE 802.1p), port mirroring, IGMP snooping, and rate limiting. The KSZ8895 belongs to the Fast-Ethernet switch family within the broader category of Ethernet controllers, which sit above physical-layer transceivers (PHYs) in the networking semiconductor hierarchy. Key features include five 10/100Base-TX ports with auto-negotiation and auto-MDI/MDIX, an integrated 1.4 Gbps switch fabric with 64 KB frame buffer, support for 4K-entry MAC address table, IEEE 802.1Q VLAN with 16 VLAN groups, IEEE 802.1p QoS with four priority queues, and per-port programmable head-of-line blocking prevention. The device operates from a single 3.3 V supply with internal 1.8 V LDO and supports commercial (0C to 70C) and industrial (-40C to 85C) temperature ranges. The KSZ8895MQXI uses a store-and-forward switching architecture with a 32-bit MIPS-style management interface accessible via SPI or I2C. Its integrated PHYs include HP Auto-MDIX crossover detection on all five ports, eliminating external magnetics-center-tap resistors in many designs. The 128-pin PQFP package provides generous PCB escape routing for high-density industrial designs. Typical applications include industrial Ethernet switches, automotive gateway ECUs, IP surveillance NVR/DVR systems, building automation controllers, and IoT edge gateways requiring deterministic Layer-2 switching. The KSZ8895 is commonly used in PROFINET, EtherCAT, and Modbus TCP environments. When designing with this device, note that the 128-pin PQFP requires a 4-layer PCB minimum for proper return-path integrity on the MII/RMII bus. Use a 25 MHz crystal with 50 ppm accuracy for the reference clock and place decoupling capacitors (0.1 uF plus 10 uF bulk) within 3 mm of each supply pin.

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KSZ8895MQXIA - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895MQXIA

KSZ8895MQXIA - 5-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8895MQXIA is a highly integrated, Layer 2 managed, five-port Fast Ethernet switch IC delivering 10/100 Mbps Base-T/TX connectivity with integrated PHYs in a 128-pin PQFP (14x20 mm) package. It supports five ports with auto-negotiation, auto MDI/MDIX crossover, and offers both MII and RMII host interfaces plus I2C and SPI management interfaces for flexible host connectivity. What is a managed Ethernet switch IC? A managed Layer 2 switch is an integrated circuit that connects multiple Ethernet nodes and implements MAC (Media Access Controller) bridges with frame forwarding, VLAN tagging, QoS prioritization, and management features. The KSZ8895MQXIA belongs to the managed Ethernet switch taxonomy: Ethernet switch IC -> Layer 2 switch -> managed switch -> 10/100 Mbps Fast Ethernet switch. It sits at the network edge or in industrial nodes, replacing discrete PHY+MAC designs with a single chip that includes all five PHYs, the switch fabric, and a management interface. The KSZ8895MQXIA integrates five 10/100 BASE-TX transceivers with HP Auto-MDIX, a 1.4 Gbps high-performance non-blocking switch fabric, 1 K entry MAC address table, and full Layer 2 management including 802.1Q VLAN, 802.1p QoS priority, port mirroring, and IGMP snooping. The device operates from a 3.3V core supply plus a 1.2V internal LDO output, supports industrial temperature range, and is AEC-Q100 qualified for automotive Ethernet applications per Microchip's product page. Architecturally, the KSZ8895MQXIA uses a store-and-forward shared-memory switch fabric with 256 KB internal packet buffer. Each port supports 10/100 Mbps full/half duplex with flow control (802.3x pause frames) and back-pressure in half-duplex mode. Host management is provided through SPI, I2C, or MII/RMII in unmanaged mode. Typical applications include industrial Ethernet daisy-chain nodes, automotive in-vehicle networking (IVN) gateways, IP surveillance and security switch modules, building automation controllers, and embedded industrial control boards requiring a small-footprint multi-port Ethernet switch. When designing with the KSZ8895MQXIA, follow Microchip's reference MII/RMII clocking guidelines and use 25 MHz or 50 MHz crystal for the MII reference. Note that Microchip's support article recommends KSZ8895MQXI (revision B) for new designs; the MQXIA suffix denotes revision A3 with known errata. This page synthesizes the manufacturer datasheet, Microchip's drop-in migration app note, and distributor pricing to provide a single reference for engineers evaluating the KSZ8895MQXIA for new and existing designs.

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KSZ8895RQI - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895RQI

KSZ8895RQI - 5-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip KSZ8895RQI is a highly integrated, Layer 2 managed five-port Ethernet switch with 10/100 Base-T/TX PHYs, one RMII interface, and one SW5-RMII interface, housed in a 128-PQFP (14 x 20 mm) package. According to the verified distributor and manufacturer listings, it is an industrial-temperature I-Temp device operating from -40°C to 85°C and supports 1.8 V, 2.5 V, and 3.3 V supply rails. The integrated switch is designed for compact, cost-sensitive embedded networking designs requiring multiple copper Ethernet ports and a compact host-facing interface. An Ethernet switch is a Layer 2 network device that receives Ethernet frames on one port, determines the destination port, and forwards traffic to the appropriate output port while reducing unnecessary collision-domain traffic. The KSZ8895 family integrates five 10/100 PHYs, switching logic, and management features into one device, reducing the need for discrete PHY components and simplifying PCB layout. Its RMII interface connects the switch to an embedded host processor using a reduced pin-count medium-speed interface. The verified listings identify the part as a five-port 10/100 Base-T/TX Ethernet switch with RMII support and multiple supply-voltage options. Its automotive-oriented family positioning is reflected by the Microchip product page, which describes the KSZ8895 family as automotive qualified, while the exact qualification status of this specific orderable MPN should be confirmed against the latest manufacturer documentation. The 128-PQFP package provides a high pin count suitable for dedicated PHY, management, power, and host-interface connections. The KSZ8895RQI is suitable for industrial control equipment, automotive electronics, embedded gateways, network appliances, and compact Ethernet bridges. Its integrated five-port architecture can provide local copper connectivity for controllers, sensors, service interfaces, and upstream links. In an industrial design, the -40°C to 85°C I-Temp rating supports operation across extended commercial temperature environments, provided the system meets the device's electrical and layout requirements. Designers should confirm the exact RMII signal mapping, required external components, strap settings, and supply sequencing from the manufacturer datasheet before layout release. The 128-PQFP footprint demands careful decoupling and controlled routing for each PHY and digital interface. This page combines verified product identity, distributor sourcing, package details, and practical design guidance; detailed electrical limits should be obtained from the official Microchip KSZ8895 documentation. Because the supplied web data does not provide verified numerical pricing or a complete pin-level table, unavailable values are explicitly marked rather than inferred. Engineers should use the latest datasheet and current distributor inventory for production sourcing.

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KSZ8895RQXC - 5-Port 10/100 Managed Ethernet Switch | Microchip
KSZ8895RQXC

KSZ8895RQXC - 5-Port 10/100 Managed Ethernet Switch | Microchip

The Microchip Technology KSZ8895RQXC is an integrated five-port 10/100 managed Ethernet switch with an MII or RMII interface, supplied in a 128-PQFP package measuring 14 mm by 20 mm. It is the RQXC ordering variant of the KSZ8895 family, which Microchip describes as an automotive-qualified, highly integrated Layer 2 managed switch designed to reduce system cost. An Ethernet switch is a networking semiconductor that connects multiple physical-layer ports to a higher-level communications interface and supports Layer 2 frame forwarding. Within the networking hierarchy, the KSZ8895RQXC is an Ethernet switch controller and interface IC. It consolidates five 10/100 Ethernet ports, integrated switching resources, management features, and an MII/RMII processor interface into one package, reducing the component count and board area required for an embedded Ethernet node. The primary feature set includes five integrated 10/100 ports, Layer 2 managed-switch operation, and support for MII and RMII host interfaces. The MII option provides a parallel Ethernet control interface, while RMII reduces the number of host-interface signals when the connected processor includes an RMII controller. These choices let the same switch family address embedded systems with different processor-interface requirements. The KSZ8895RQXC is positioned for industrial, automotive, and other embedded networking systems where multiple wired Ethernet endpoints must connect to a central system-on-chip, microcontroller, or network processor. Its managed Layer 2 functionality supports network control beyond simple frame forwarding, while the integrated switch architecture can shorten the path between attached devices and the upstream network. Engineers should use the manufacturer pin-description table and electrical-characteristics section when assigning PCB signals, setting the host interface, selecting magnetics, and calculating power dissipation. The 128-PQFP package requires careful escape routing because its high pin count and exposed thermal-management requirements make PCB layout more demanding than a leadless switch package. This page summarizes the confirmed switch, interface, package, and ordering information, then adds practical selection guidance for evaluating the KSZ8895RQXC in embedded Ethernet designs. For current commercial availability and lead time, use the Request a Quote form on this page.

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