KSZ8895MQ - 5-Port 10/100 Managed Ethernet Switch | Microchip
部品番号: KSZ8895MQ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
KSZ8895MQ 概要
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.
ドロップイン代替品: KSZ8895MQ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: KSZ8895MQ （同一形状・フットプリント） — 相違点: Host Interface, Package, Product Type.
クイック比較ツール — 並列比較する代替部品を選択:
KSZ8895MQXI
✅ ドロップイン✓ 在庫あり
$5.39 / 個
データシートを見る →KSZ8895RQXI
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8895FQX
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8895MLX
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8895MLUBX
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8895MQI
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8895MQ 最大定格＆電気的特性
| Product Type | Integrated Layer 2 managed Ethernet switch |
| Number of Ethernet Ports | 5 ports |
| Ethernet Data Rate | 10 Mbps to 100 Mbps |
| Supported Ethernet Standards | 10/100BASE-T/TX |
| Layer | Layer 2 |
| Host Interface | MII, RMII, SNI |
| Configuration Interface | I2C, SPI |
| Supply Voltage Range | 3.15 V to 3.45 V |
| 動作温度範囲 | 0°C to +70°C |
| パッケージ | 128-pin PQFP, 14 mm x 20 mm |
| 実装タイプ | Surface mount |
| Automotive Qualification | KSZ8895 family is automotive qualified |
| Power Management | Advanced power management |
| Quality-of-Service Features | Layer 2 tag/port-based QoS features |
| Switch Architecture | Integrated five-port 10/100 switch |
KSZ8895MQ 128-pin pqfp, 14 mm x 20 mm ピン配置ガイド
KSZ8895MQ (128-pin pqfp, 14 mm x 20 mm パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: KSZ8895MQ.
詳細は データシート をご参照ください。
主な用途
KSZ8895MQ の用途: 6 件s: Industrial Ethernet Control, Automotive Network Gateway, Embedded Network Gateway, IP Telephone and VoIP Endpoint, Print and Imaging Equipment, Test and Measurement Networking.
Industrial Ethernet Control
The KSZ8895MQ fits industrial control equipment that needs five integrated 10/100 ports, Layer 2 management, and a selectable MII, RMII, or SNI host connection. Its verified 3.15 V to 3.45 V supply range fits a regulated 3.3 V power architecture, while I2C and SPI provide configuration paths for board settings. The five-port integration reduces the number of discrete Ethernet controllers required for PLCs, machine controllers, and remote I/O gateways. Engineers should still verify startup strap logic, port isolation, copper magnetics, and the manufacturer's reference layout before fabrication.
おすすめ
Automotive Network Gateway
The KSZ8895MQ is relevant to vehicle network gateways because Microchip identifies the KSZ8895 family as automotive qualified and integrates five Fast Ethernet ports in one device. Layer 2 management and advanced power management can support centralized network aggregation while the MII interface provides a parallel host connection. The 128-pin PQFP is substantial, so enclosure volume, copper heat spreading, and assembly capability must be considered. Qualification must be verified for the exact MQ suffix rather than inferred for the entire family.
おすすめ
Embedded Network Gateway
A compact gateway can use the KSZ8895MQ to consolidate five 10/100BASE-T/TX ports behind a host processor through MII, RMII, or SNI. This architecture suits protocol converters, edge gateways, and embedded concentrators where Fast Ethernet is sufficient. The Layer 2 switch handles local frame forwarding while management interfaces permit configuration by the host. The principal trade-off is package size: 128 leads in a 14 mm by 20 mm PQFP require fine-pitch assembly and careful fanout compared with smaller Ethernet devices.
おすすめ
IP Telephone and VoIP Endpoint
The KSZ8895MQ can support multi-connection VoIP equipment that must combine phone-facing ports with an uplink in a small Fast Ethernet system. Five 10/100 ports provide shared connectivity without requiring five discrete copper interfaces, while QoS features identified by the manufacturer can assist traffic prioritization. The selected host mode must match the endpoint processor, and clocking must follow the MII, RMII, or SNI requirements. Validate packet timing, echo behavior, and thermal performance during port activity before production release.
おすすめ
Print and Imaging Equipment
Printers, scanners, and multifunction imaging systems can use the KSZ8895MQ when several internal 10/100 Ethernet connections need local Layer 2 switching. Integrated management reduces wiring complexity and supports centralized configuration through I2C or SPI. The five-port arrangement is useful when equipment exposes service, host, and accessory ports while retaining one uplink path. Because copper magnetics, creepage, and isolation requirements vary by implementation, the design should follow the exact reference schematic and keep switching-node routing away from sensitive analog sections.
おすすめ
Test and Measurement Networking
Laboratory instruments can use the KSZ8895MQ to combine service, trigger, control, and uplink Ethernet paths in a five-port Fast Ethernet switch. Layer 2 management and advanced power management help control inactive-port behavior, while MII or SNI can connect to an embedded instrument controller. The architecture is appropriate when 100 Mbps links meet throughput requirements and deterministic local switching is desired. Validation should include sustained traffic, cable insertion, boot defaults, thermal rise, and synchronization-sensitive traffic before shipment.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: KSZ8895MQ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | KSZ8895MQX | KSZ8895RQXI | KSZ8895FQX | KSZ8895MLX | KSZ8895MLUBX | KSZ8895MQI |
|---|---|---|---|---|---|---|---|
| Package | PQFP-128 (14x20 mm) | PQFP-128 migration-family replacement; exact outline not provided | PQFP-128 (20x14 mm) | PQFP-128 migration-family replacement; exact outline not provided | PQFP-128 migration-family replacement; exact outline not provided | PQFP-128 migration-family replacement; exact outline not provided | PQFP-128 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Class | Five-port managed Layer 2 Ethernet switch | KSZ8895 migration-family switch | Five-port 10/100 Ethernet integrated circuit | KSZ8895 migration-family switch | KSZ8895 migration-family switch | KSZ8895 migration-family switch | Ethernet transceiver/controller in PQFP-128 |
| Replacement Evidence | Original MQ ordering code | Explicitly documented functional drop-in replacement | Included in KSZ8895 migration replacement family | Included in KSZ8895 migration replacement family | Included in KSZ8895 migration replacement family | Included in KSZ8895 migration replacement family | Same-family comparison found, but explicit MQ drop-in status not provided |
主な差別化要因
- Explicit manufacturer-backed migration path （vs KSZ8895MQX)
- Five-port integration （vs KSZ8895MQI)
- Multiple host-interface choices （vs KSZ8895RQXI)
- Configuration flexibility （vs KSZ8895FQX)
- Established copper Fast Ethernet positioning （vs KSZ8895MLX)
設計ノート
Implement the 128-lead PQFP fanout and copper-pour thermal strategy from the manufacturer reference design. Keep each 10/100BASE-T differential pair routed as a controlled-impedance pair, maintain the specified spacing from unrelated nets, and minimize stub branches associated with test points. Place the switch and its decoupling close to their associated power planes, while preserving return paths beneath high-speed host-interface signals.
Design the supply around the verified 3.15 V to 3.45 V operating range and follow the datasheet's recommended capacitor network. Separate noisy transceiver supply paths from sensitive host circuitry where the reference design permits, and account for startup current across all enabled ports. Confirm that the regulator has adequate transient response before adding bulk capacitance that could alter power sequencing or inrush behavior.
Choose the MII, RMII, or SNI mode before finalizing the host interface because clock source, pin multiplexing, and trace topology depend on that choice. Follow the manufacturer's MII timing and layout guidance, particularly for the parallel data bus and control signals. A compact host processor or FPGA may make short, controlled traces possible, but excessive fanout or long stubs can degrade signal integrity at the upper interface rate.
Do not treat every similarly named KSZ8895 suffix as interchangeable. Microchip's migration note distinguishes exact orderable mappings, and one earlier migration document notes that certain pins can be NC on MQ/TMQ but carry FXSD functions on FMQ devices. Check the migration table, thermal grade, firmware identifiers, startup straps, and exact package drawing before releasing a substitute order.
Validate heat dissipation with all five ports populated and under sustained traffic. A PQFP-128 body can spread heat through its leads and PCB copper, but the supplied data does not provide junction-to-ambient resistance or maximum dissipation. Do not estimate production thermal performance from package size alone; use the datasheet limits and measure junction or board temperature in the final enclosure, supply, and airflow conditions.
コンプライアンス情報
Microchip describes the KSZ8895 family as automotive qualified. Exact suffix-level AEC-Q100 qualification and other compliance declarations were not supplied. RoHS appeared in a comparison snippet for a related family device but was not explicitly attributed to KSZ8895MQ, so no compliance conclusion is inferred.
