KSZ8895FMQ - 5-Port 10/100 Managed Ethernet Switch | Microchip
MPN: KSZ8895FMQ ✓ ActiveKSZ8895FMQ Overview
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.
Drop-in alternatives for KSZ8895FMQ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with KSZ8895FMQ (same form factor and footprint) — differing in Host Interface, Package, Product Type.
KSZ8895MQXI
✅ Drop-InContact for price
View Datasheet →KSZ8895RQX
✅ Drop-In📋 Reference alternative (not in catalog)
KSZ8895FQX
✅ Drop-In📋 Reference alternative (not in catalog)
KSZ8895ML
✅ Drop-In📋 Reference alternative (not in catalog)
KSZ8895MLUB
✅ Drop-In📋 Reference alternative (not in catalog)
KSZ8895FMQ Maximum Ratings & Electrical Characteristics
| Product Type | Integrated 5-port Layer 2 managed Ethernet switch |
| Number of Ethernet Ports | 5 ports |
| Ethernet Data Rate | 10/100 Mbps per port |
| Physical Layer | 10/100BASE-T/TX PHY |
| Media Type | Copper Ethernet |
| Host Interface | MII and RMII |
| Switching Layer | Layer 2 |
| Management | Managed switch |
| Automotive Qualification | Automotive qualified |
| Package | 128-pin PQFP, 14 x 20 mm |
| Mounting Type | Surface mount |
| Power Architecture | Low-power integrated switch with advanced power management |
| Quality of Service | Four-queue prioritization |
| Rate Control | Programmable rate limit and priority ratio |
| Spanning Tree Support | Rapid Spanning Tree Protocol (RSTP) |
| Packet Filtering | Multiple packet filters |
| Termination | On-chip termination |
KSZ8895FMQ 128-pin pqfp, 14 x 20 mm Pin Configuration Guide
Pin configuration for KSZ8895FMQ (128-pin pqfp, 14 x 20 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for KSZ8895FMQ.
Refer to the datasheet for full pin configuration.
Typical Applications
KSZ8895FMQ is suitable for 6 applications: Automotive Ethernet Gateway, Industrial Network Control Panel, IP Camera Network Interface, Embedded Network Appliance, Print Server and Network Hub, Audio-Video Network Endpoint.
Automotive Ethernet Gateway
The KSZ8895FMQ fits an automotive Ethernet gateway because it integrates five 10/100BASE-T/TX ports, Layer 2 management, and automotive-qualified family technology in one 128-pin PQFP device. Managed functions such as four-queue QoS, priority ratios, rate limiting, RSTP, and multiple packet filters allow traffic from different vehicle subsystems to be classified without relying on continuous host-processor intervention. Its low-power architecture is also valuable in embedded automotive electronics where standby and active consumption affect thermal design. Engineers must still confirm the exact ordering code’s AEC-Q100 qualification, temperature range, external magnetics, and AEC-Q200 component requirements before production release.
Recommended
Industrial Network Control Panel
The KSZ8895FMQ is appropriate for industrial control panels that must connect several Fast Ethernet devices while applying deterministic traffic policies. Five integrated 10/100-Mbps PHYs reduce the number of separate PHY packages on the controller board, and the managed Layer 2 architecture provides QoS queues, rate limiting, priority-ratio controls, RSTP, and packet filtering. These capabilities help separate operational traffic from less critical management traffic on the same copper network. The 128-pin PQFP package still demands careful planning for transformer networks, controlled-impedance traces, supply bypassing, and the grounding scheme specified in the manufacturer hardware guidance.
Recommended
IP Camera Network Interface
The KSZ8895FMQ can support a multi-camera or camera-to-backbone Ethernet interface by providing five integrated 10/100 ports in a single managed switch. Cameras, sensors, and a management link can share one switched Fast Ethernet segment, while four-queue QoS and programmable rate limits help prioritize video traffic over housekeeping packets. The integrated 10/100BASE-T/TX PHYs simplify the physical-layer portion of the design, although each copper port still requires the appropriate transformer or magnetics network. RMII may reduce host-interface wiring when the connected controller supports it, but timing and clock requirements must be checked against the KSZ8895 datasheet.
Recommended
Embedded Network Appliance
The KSZ8895FMQ suits embedded network appliances that need several 10/100-Mbps copper connections without allocating five external PHY components. Its managed Layer 2 features allow local filtering, QoS prioritization, rate control, and spanning-tree behavior, reducing processor overhead compared with handling every frame in host software. The MII interface is appropriate for controllers using the established parallel Ethernet interface, while RMII can simplify connections to compatible host processors. A practical design should place the switch, magnetic components, and passives according to the manufacturer reference layout, use low-ESR local decoupling, and validate magnetics and cable reach in the final enclosure and temperature environment.
Recommended
Print Server and Network Hub
The KSZ8895FMQ can serve as the switching element in a compact print server, network hub, or legacy Fast Ethernet infrastructure adapter. Five integrated 10/100BASE-T/TX ports provide connectivity among a host controller, printer, and other Fast Ethernet equipment while managed QoS and rate limiting help manage shared uplink traffic. Its low-power switch core and integrated PHYs support cost-sensitive systems where component count and board area are important. The target remains a managed Layer 2 design rather than a plug-and-play repeater, so configuration firmware, spanning-tree behavior, and per-port policies must be initialized according to the manufacturer’s register and software guidance.
Recommended
Audio-Video Network Endpoint
The KSZ8895FMQ can be used in an audio-video endpoint that combines several Fast Ethernet devices with a higher-level network processor. Four-queue prioritization and programmable priority ratios allow selected media traffic to receive preferred treatment over control or management packets, while multiple packet filters support policy enforcement at the switch. The five integrated copper ports reduce external PHY requirements and can connect displays, control processors, and networked audio equipment through one managed Layer 2 fabric. Because 10/100BASE-T is deterministic but not Gigabit Ethernet, high-resolution video or uncompressed audio traffic requires careful bandwidth budgeting. Cable reach, transformer selection, and RMII timing should be verified in prototype hardware.
Recommended
Recommended Products Summary
Engineering reference data for KSZ8895FMQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | KSZ8895MQX | KSZ8895RQX | KSZ8895FQX | KSZ8895ML | KSZ8895MLUB |
|---|---|---|---|---|---|---|
| Package | 128-PQFP (14 x 20 mm) | 128-PQFP (14 x 20 mm) | 128-PQFP (14 x 20 mm) | 128-PQFP (14 x 20 mm) | 128-PQFP (14 x 20 mm) | 128-PQFP (14 x 20 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | Integrated 5-port managed Ethernet switch | KSZ8895 family managed Ethernet switch | KSZ8895 family managed Ethernet switch | KSZ8895 family managed Ethernet switch | KSZ8895 family managed Ethernet switch | KSZ8895 family managed Ethernet switch |
| Ethernet Ports | 5 ports | 5 ports | 5 ports | 5 ports | 5 ports | 5 ports |
| Data Rate | 10/100 Mbps per port | 10/100 Mbps per port | 10/100 Mbps per port | 10/100 Mbps per port | 10/100 Mbps per port | 10/100 Mbps per port |
| Host Interface | MII and RMII | MII and RMII | MII and RMII | MII and RMII | MII and RMII | MII and RMII |
| Quality of Service | Four queues with priority and rate controls | KSZ8895 family QoS functionality | KSZ8895 family QoS functionality | KSZ8895 family QoS functionality | KSZ8895 family QoS functionality | KSZ8895 family QoS functionality |
| Spanning Tree | RSTP support | KSZ8895 family RSTP support | KSZ8895 family RSTP support | KSZ8895 family RSTP support | KSZ8895 family RSTP support | KSZ8895 family RSTP support |
Key Differentiators
- Five integrated copper PHYs in one switching IC (vs KSZ8895FQX)
- Layer 2 traffic-management capability (vs KSZ8895MQX)
- Automotive-oriented family positioning (vs KSZ8895MLUB)
Design Notes
Implement the five 10/100BASE-TX channels using the manufacturer’s recommended transformer or magnetics network and termination arrangement. Keep the switch, magnetics, and PHY-side components positioned according to the KSZ8895 reference layout. The verified sources confirm integrated PHYs and on-chip termination, but they do not provide exact placement dimensions or trace-length constraints, so do not infer those values without the complete hardware-design documentation.
Treat the MII and RMII interfaces as high-speed digital links even though the target operates at 10/100 Mbps. Route host-interface signals over continuous reference planes, avoid unnecessary stubs and test pads, and confirm connector and component placement with the manufacturer’s interface guidance. RMII clock timing is especially important because its interface uses fewer signals than MII; verify setup and hold requirements against the exact host controller and KSZ8895 revision.
Place local low-ESR decoupling capacitors at the supply pins and distribute power through an uninterrupted plane or properly sized copper path. The verified sources identify low-power operation and advanced power management but do not provide the supply-voltage range, pin-level current limits, or recommended capacitance values. Obtain those figures from the manufacturer datasheet and use the exact values for both steady-state and worst-case traffic simulations.
Do not treat “functional drop-in replacement” as permission to substitute any KSZ8895 suffix without checking the official migration table. Confirm the exact source and destination MPN, package, temperature grade, qualification status, register configuration, firmware or driver support, and lead time. Microchip’s migration note identifies compatible family variants, but the supplied excerpts do not expose the detailed pairing table needed for an unrestricted substitution decision.
Compliance Information
The verified manufacturer page states that the KSZ8895 family is automotive qualified, but the supplied excerpts do not contain a formal compliance matrix or ordering-code-specific AEC-Q100 grade. Compliance must therefore be confirmed from the current manufacturer product documentation.
