KSZ8895RQXC - 5-Port 10/100 Managed Ethernet Switch | Microchip
MPN： KSZ8895RQXC ✓ 啟用中KSZ8895RQXC 概覽
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.
直接替換替代品，適用於 KSZ8895RQXC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
KSZ8993ML
✅ 直接替換📋 參考替代品（不在目錄中）
KSZ8995XA
✅ 直接替換📋 參考替代品（不在目錄中）
KSZ8895RQXC 最大額定值與電氣特性
| Product Type | Integrated managed Ethernet switch |
| Ethernet Port Count | 5 ports |
| Ethernet Speed | 10/100 Base-T |
| Switching Layer | Layer 2 |
| Management Architecture | Managed switch |
| Host Interface | MII and RMII |
| 封裝 | 128-PQFP (14 mm x 20 mm) |
| Automotive Qualification | Automotive qualified |
| 安裝類型 | Surface mount |
KSZ8895RQXC 128-pqfp (14 mm x 20 mm) 腳位配置指南
KSZ8895RQXC（128-pqfp (14 mm x 20 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： KSZ8895RQXC.
請參閱 資料表 以查看完整腳位配置。
典型應用
KSZ8895RQXC 適用於 6 應用s: Industrial Ethernet Gateway, Automotive In-Vehicle Network Node, Embedded Linux Network Appliance, Networked Test and Measurement Instrument, Power and Energy Monitoring System, Smart Building Edge Controller.
Industrial Ethernet Gateway
The KSZ8895RQXC fits industrial gateways that need to consolidate five 10/100 wired connections into one processor-facing Ethernet link. Its managed Layer 2 architecture provides a practical foundation for segmented networks, status monitoring, and controlled frame forwarding. Connect the host processor through MII or RMII according to its Ethernet controller capability, and apply the manufacturer reference layout for differential routing and magnetics. The 128-PQFP package increases routing complexity, so early footprint planning is important. Confirm industrial temperature grade, power limits, isolation requirements, and electromagnetic-emissions design requirements before production release.
推薦
Automotive In-Vehicle Network Node
The KSZ8895RQXC is suitable for an automotive in-vehicle Ethernet node because the KSZ8895 family is described by Microchip as automotive qualified. Five integrated 10/100 ports can support multiple wired endpoints, while the managed-switch functions support Layer 2 traffic handling. The processor can use MII or RMII, subject to its native interface and automotive qualification. Before schematic release, verify the exact ordering code's temperature range, AEC-Q100 grade, electrical limits, and functional-safety implications. Use the manufacturer's recommended Ethernet magnetics and layout because wiring faults and transient conditions can materially affect an automotive network design.
推薦
Embedded Linux Network Appliance
The KSZ8895RQXC fits embedded Linux appliances requiring five switched Ethernet ports and a serial processor connection. An RMII implementation can reduce host-interface wiring compared with MII, while MII may suit processors that already expose the wider parallel interface. Platform bring-up must define the switch resources, management access, port status, and PHY addressing in the device tree. The Linux MAC or switch driver must also support the chosen host interface and the KSZ8895's register model. Before hardware release, confirm kernel-driver support, interrupt routing, firmware requirements, and the exact pin assignments required by the selected board.
推薦
Networked Test and Measurement Instrument
The KSZ8895RQXC can support a test instrument that must expose several 10/100 service ports while retaining a central processor interface. The managed Layer 2 architecture is useful where instrument subsystems, service computers, or external test equipment need isolated physical connections. MII may be selected for a processor with a conventional parallel Ethernet interface, whereas RMII can simplify board routing where supported. Use the manufacturer's recommended magnetics and reference circuit to control impedance, isolation, and return paths. Confirm the device's electrical operating limits and thermal performance under the expected number of active links before choosing power regulators and enclosure ventilation.
推薦
Power and Energy Monitoring System
The KSZ8895RQXC is applicable to a multi-port energy-monitoring system that gathers data from local controllers and presents it through an upstream Ethernet connection. Five 10/100 ports can reduce the number of discrete network interfaces required by the central data concentrator, and managed switching helps organize traffic among measurement nodes. The host connection should match the processor's supported MII or RMII configuration. Treat Ethernet magnetics, surge protection, and isolation as separate safety and compliance considerations rather than assuming the switch IC provides complete surge protection. Validate the package thermal margin, power budget, and grounding strategy against the number of active ports and cable environment.
推薦
Smart Building Edge Controller
The KSZ8895RQXC can serve as the Ethernet aggregation device in a smart-building edge controller linking lighting, access-control, HVAC, and sensor gateways. A five-port managed switch provides a compact way to combine several wired endpoints before passing traffic to an upstream network. The building controller's processor should use RMII when its interface and driver support are mature, or MII where broader host compatibility is required. Pay particular attention to isolated copper magnetics, cable surge exposure, Ethernet routing geometry, and enclosure temperature. Confirm the switch's operating limits and the platform's management-agent implementation before deploying it in occupied-building equipment.
推薦
推薦產品摘要
工程參考資料，適用於 KSZ8895RQXC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | KSZ8993ML | KSZ8995XA |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 128-PQFP (14x20) | 128-PQFP (14x20) | 128-PQFP (14x20) |
主要差異化特點
- Five-port integration reduces the number of separate Ethernet endpoints needed at the host (對比KSZ8993ML)
- Automotive-qualified family positioning (對比KSZ8993ML)
- Supports both MII and RMII host interfaces (對比KSZ8995XA)
設計說明
Allocate the 128-PQFP footprint with enough escape routing for every Ethernet differential pair, MII or RMII signal, management signal, and supply connection. Follow the manufacturer reference layout for the selected magnetics and termination network. Keep each 10/100 pair as a controlled-impedance differential route with a continuous return path, and avoid introducing unnecessary stubs or layer transitions near high-speed host-interface signals.
Calculate the switch power budget for the actual number of active ports, operating mode, supply voltage, and host-interface speed. The available product summary does not establish typical or maximum supply current, so obtain those limits from the manufacturer electrical-characteristics table before selecting regulators. Include local high-frequency decoupling and verify startup sequencing against the processor and Ethernet magnetics requirements.
Do not treat equal package dimensions as proof that another switch is pin-compatible. For the KSZ8993ML or KSZ8995XA, compare every power, ground, port, management, clock, reset, and host-interface signal against both manufacturer pin tables. A same-package comparison is only a screening step; production substitution also requires confirming management-register behavior, timing, electrical limits, qualification, and software or firmware support.
Select MII or RMII according to the processor's hardware and driver support rather than pin count alone. RMII can reduce host-interface wiring, but it introduces stricter clock and signal-timing relationships. Validate the required RMII reference-clock source and supported clock mode in the platform design. For MII, account for the wider parallel bus and its greater routing and timing burden.
合規資訊
Microchip describes the KSZ8895 family as automotive qualified, but the available product summary does not identify the specific RQXC ordering code's AEC-Q100 grade or its RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations.
