KSZ8895RQI - 5-Port 10/100 Managed Ethernet Switch | Microchip
MPN： KSZ8895RQI ✓ 啟用中KSZ8895RQI 概覽
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.
直接替換替代品，適用於 KSZ8895RQI — 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。
此系列的變體
與下列產品可直接替換的同系列型號： KSZ8895RQI （相同外形與佔位） — 差異在於 Host Interface, Number of Ports, Operating Temperature, Package, Product Type.
KSZ8895MQXIA
✅ 直接替換聯絡詢價
查看資料表 →KSZ8895MQXI
✅ 直接替換聯絡詢價
查看資料表 →KSZ8895RQI-TR
✅ 直接替換📋 參考替代品（不在目錄中）
KSZ8895R
✅ 直接替換📋 參考替代品（不在目錄中）
KSZ8895MQXI
✅ 直接替換聯絡詢價
查看資料表 →KSZ8895RQI 最大額定值與電氣特性
| Product Type | Layer 2 managed Ethernet switch |
| Number of Ports | 5 ports |
| Ethernet Standards | 10/100 Base-T/TX |
| Host Interface | RMII |
| Additional Interface | SW5-RMII |
| Supply Voltage 1 | 1.8 V |
| Supply Voltage 2 | 2.5 V |
| Supply Voltage 3 | 3.3 V |
| 工作溫度 | -40°C to 85°C |
| 封裝 | 128-PQFP (14 x 20 mm) |
| 安裝類型 | Surface mount |
| Temperature Grade | I-Temp |
| Automotive Family Qualification | Automotive qualified family per manufacturer product page |
| Switching Layer | Layer 2 |
| Ethernet PHY Count | Integrated 10/100 PHY architecture |
| Interface Pin Count | 128 pins |
| Supplier | Microchip Technology |
| DigiKey Listing | Available through DigiKey |
| Mouser Listing | Available through Mouser |
| Octopart Listing | Available through Octopart |
KSZ8895RQI 128-pqfp (14 x 20 mm) 腳位配置指南
KSZ8895RQI（128-pqfp (14 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： KSZ8895RQI.
請參閱 資料表 以查看完整腳位配置。
典型應用
KSZ8895RQI 適用於 6 應用s: Industrial Ethernet Control, Automotive Network Gateway, Embedded Network Appliance, Industrial Sensor Aggregation, Network Instrumentation, Compact Communication Module.
Industrial Ethernet Control
The KSZ8895RQI fits industrial controllers needing five local 10/100 copper Ethernet connections and a compact host interface. Its five integrated PHYs can connect programmable controllers, sensors, motor-control modules, service interfaces, and an upstream network without requiring five separate external PHY devices. The RMII interface provides a defined connection to an embedded processor, while the -40°C to 85°C I-Temp rating supports extended industrial environments when the system also meets the device's power and layout requirements. Engineers should confirm exact PHY configuration, port roles, strap settings, and supply sequencing in the official datasheet before committing the PCB.
推薦
Automotive Network Gateway
The KSZ8895RQI is a candidate for automotive network gateway designs requiring multiple 10/100 Ethernet connections and an embedded host controller. The family is described by Microchip as automotive qualified, but the exact qualification record for this MPN must be verified before production release. Five integrated PHYs can support service networking, diagnostic connectivity, and internal Ethernet segmentation, while RMII provides a compact interface to an application processor. Layout must account for the 128-PQFP footprint, automotive EMI expectations, power-supply quality, and exact qualification requirements stated in the latest Microchip documentation.
推薦
Embedded Network Appliance
The KSZ8895RQI can serve as the central Ethernet switch in an embedded gateway, protocol converter, or compact network appliance. Five 10/100 ports provide local connectivity for management, data acquisition, service access, and uplink functions without relying on a large modular switch assembly. The device's multiple listed supply voltages help align with mixed embedded systems, although designers must implement the exact rail sequencing and decoupling from the datasheet. The -40°C to 85°C range is useful for equipment installed outside a temperature-controlled enclosure. RMII host connectivity and the integrated Layer 2 switching function help reduce system component count.
推薦
Industrial Sensor Aggregation
The KSZ8895RQI is appropriate for an industrial sensor aggregation node that must collect data from several Ethernet-connected sensors or remote I/O modules. Its five 10/100 Base-T/TX PHYs provide multiple copper network termination points, and the Layer 2 switch function can reduce unnecessary traffic between attached devices. An embedded host can use RMII to configure the switch, read status information, and forward application data. The I-Temp range supports industrial temperature conditions, but cable surge protection, isolation, grounding, and connector design remain system-level requirements. Verify the device's exact port and management features in the current datasheet before selecting external protection.
推薦
Network Instrumentation
The KSZ8895RQI can be used in test and measurement equipment that needs several deterministic 10/100 Ethernet connections for instruments, service interfaces, and a host controller. Five integrated PHYs reduce board area compared with a design using discrete Ethernet components, while the RMII interface gives the system processor a compact connection point. The device's -40°C to 85°C I-Temp specification is suitable for many industrial and laboratory enclosure environments. Designers should validate timing, management-register compatibility, clocking, and port configuration against the specific host processor and test system. The 128-PQFP package requires a careful fanout and grounding strategy.
推薦
Compact Communication Module
The KSZ8895RQI is suitable for compact communication modules that expose multiple Ethernet service ports to an embedded host. Its five-port 10/100 switching capability can support local management, status monitoring, configuration access, and an uplink in a small industrial module. The RMII and SW5-RMII interfaces provide a defined integration path, while the listed 1.8 V, 2.5 V, and 3.3 V rails support integration with common embedded power trees. The primary engineering trade-off is package complexity: the 128-PQFP device requires sufficient routing space, decoupling, and thermal consideration. Confirm exact interface multiplexing and supported operating modes in the latest datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 KSZ8895RQI — 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 | KSZ8895MQXIA | KSZ8895MQXI | KSZ8895RQI-TR | KSZ8895R | KSZ8895MQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
主要差異化特點
- Integrated five-port 10/100 Ethernet switching (對比KSZ8895MQXIA)
- I-Temp operating range (對比KSZ8895MQXI)
- Multiple listed supply-voltage options (對比KSZ8895RQI-TR)
- RMII and SW5-RMII integration (對比KSZ8895R)
設計說明
The KSZ8895RQI uses a 128-PQFP package, so provide clean escape routing for all Ethernet and host-interface signals. Place required decoupling capacitors close to the corresponding power pins and follow the manufacturer's recommended land pattern and thermal-via arrangement. Keep high-speed RMII and SW5-RMII traces short, controlled, and referenced to a continuous ground plane.
The verified listings identify 1.8 V, 2.5 V, and 3.3 V supply options. Do not assume that all rails can be connected simultaneously or that their sequencing is interchangeable. Build the power tree from the official datasheet, verify regulator headroom, and measure ripple and startup behavior on the assembled PCB.
RMII timing is sensitive to trace length, impedance, clock distribution, and return-path continuity. Route clock and data signals as a controlled group, avoid unnecessary stubs, and check crosstalk and return-path discontinuities. Use the manufacturer's interface timing and layout guidance rather than treating the RMII signals as ordinary low-speed GPIO.
Do not substitute a similarly named KSZ8895 family device without checking the exact package, pin mapping, port configuration, register behavior, temperature grade, and qualification status. The supplied cross-reference results do not prove pin-to-pin equivalence for every family variant. Confirm the exact MPN and latest datasheet revision before releasing a replacement BOM.
合規資訊
The verified manufacturer page describes the KSZ8895 family as automotive qualified, but exact compliance and qualification data for the KSZ8895RQI orderable MPN were not supplied. RoHS, REACH, lead-free, halogen-free, conflict-minerals, and AEC-Q100 status must be confirmed using the current manufacturer documentation.
