KSZ8895MQXIA - 5-Port 10/100 Managed Ethernet Switch | Microchip
MPN: KSZ8895MQXIA ✓ Hoạt độngKSZ8895MQXIA Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho KSZ8895MQXIA — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với KSZ8895MQXIA (cùng hình factor và footprint) — khác nhau ở Number of Ports, Package, Product Type, Host Interface, Operating Temperature.
KSZ8895MQXI
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →KSZ8895MQXI
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →KSZ8895RQXIA
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
KSZ8895MQI
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →KSZ8895MLUB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
KSZ8895MQXIA Tỷ lệ tối đa & tính chất điện
| Product Type | Layer 2 Managed 5-Port 10/100 Ethernet Switch |
| Number of Ports | 5 x 10/100 BASE-T/TX |
| Integrated PHYs | 5 (with HP Auto-MDIX) |
| Switch Fabric Bandwidth | 1.4 Gbps non-blocking |
| Host Interface | MII / RMII (also unmanaged mode) |
| Management Interface | I2C and SPI |
| MAC Address Table | 1 K entries |
| VLAN Support | IEEE 802.1Q (up to 16 VLAN groups) |
| QoS Support | IEEE 802.1p, 4 priority queues |
| Packet Buffer | 256 KB internal SRAM |
| Điện áp cung cấp | 3.3 V (analog/digital) + 1.2 V LDO |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Hộp | 128-pin PQFP (14 x 20 mm) |
| Kiểu lắp đặt | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified (per Microchip product page) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Revision | A3 (not recommended for new designs per Microchip support note) |
Hướng dẫn cấu hình chân KSZ8895MQXIA 128-pin pqfp (14 x 20 mm)
Cấu hình chân cho KSZ8895MQXIA (128-pin pqfp (14 x 20 mm) gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho KSZ8895MQXIA.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
KSZ8895MQXIA phù hợp cho 6 Áp dụngs: Industrial Ethernet Daisy-Chain Nodes, Automotive In-Vehicle Networking Gateways, IP Surveillance / Security Switch Modules, Building Automation Controllers, Embedded Industrial Control Boards, Small-Form-Factor Network Appliances.
Industrial Ethernet Daisy-Chain Nodes
The KSZ8895MQXIA's 5-port 10/100 switch fabric with HP Auto-MDIX and 1.4 Gbps non-blocking bandwidth is well matched to industrial daisy-chain Ethernet nodes where multiple devices must share a single trunk port. The MII/RMII host interface lets a small MCU or SoC manage VLAN/QoS while the 1 K-entry MAC table supports up to 1,024 nodes per segment. Industrial temperature range (-40C to +85C) and AEC-Q100 qualification suit factory-floor and process-control deployments.
Được đề xuất
Automotive In-Vehicle Networking Gateways
The KSZ8895MQXIA's AEC-Q100 qualification, 5 integrated 10/100 PHYs, and 802.1Q VLAN/802.1p QoS make it ideal for automotive gateway ECUs that aggregate multiple in-vehicle Ethernet segments. VLAN isolation separates domains (body, chassis, ADAS, infotainment) while QoS prioritizes safety-critical frames. The 128-PQFP package provides robust thermal performance for under-dash mounting, and the 1.4 Gbps fabric headroom supports full line-rate forwarding on all five ports simultaneously.
Được đề xuất
IP Surveillance / Security Switch Modules
The KSZ8895MQXIA's 5 ports support 4 PoE-powered IP cameras plus an uplink port in a small surveillance switch. The 256 KB internal packet buffer absorbs traffic bursts from multiple H.264/H.265 streams without drops, and IGMP snooping prevents multicast flooding of video streams. SPI management interface allows a low-cost MCU to perform port monitoring and PoE budgeting. The industrial temperature grade and 3.3V-only supply simplify PoE midspan integration.
Được đề xuất
Building Automation Controllers
Building automation systems require compact multi-port Ethernet switches for HVAC controllers, lighting gateways, and access control panels. The KSZ8895MQXIA's 5-port count maps to typical 4-floor + 1-backbone topologies, while 802.1Q VLAN segregates tenant traffic. The MII host interface supports both Linux-based and bare-metal MCUs, and the SPI management interface provides out-of-band configuration access for commissioning technicians. AEC-Q100 grade ensures long-term reliability in unattended installations.
Được đề xuất
Embedded Industrial Control Boards
PLC, HMI, and motion controller boards often need multiple Ethernet ports for fieldbus daisy-chains, EtherCAT masters, and uplinks. The KSZ8895MQXIA's 5 integrated PHYs with HP Auto-MDIX eliminate the need for five external PHY ICs, reducing BOM cost and PCB area significantly. The 1.4 Gbps non-blocking fabric guarantees line-rate forwarding on all ports simultaneously, critical for deterministic industrial control loops. The 128-PQFP package is easy to hand-prototype.
Được đề xuất
Small-Form-Factor Network Appliances
Compact network appliances like edge routers, smart NICs, and protocol converters benefit from the KSZ8895MQXIA's high level of integration: 5 PHYs, switch fabric, MAC table, and management all in a single 128-PQFP. The I2C and SPI management interfaces support low-pin-count host MCUs, and 802.1Q VLAN with 4 QoS queues enable traffic shaping at the network edge. AEC-Q100 grade and wide temperature range support outdoor and industrial enclosure deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho KSZ8895MQXIA — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | KSZ8895MQXI | KSZ8895MQX | KSZ8895RQXIA | KSZ8895MQI | KSZ8895MLUB |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 128-PQFP (14x20 mm) | 128-PQFP (14x20 mm) - same | 128-PQFP (14x20 mm) - same | 128-PQFP (14x20 mm) - same | 128-PQFP (14x20 mm) - same | 128-PQFP (14x20 mm) - same |
| Number of Ports | 5 x 10/100 | 5 x 10/100 | 5 x 10/100 | 5 x 10/100 | 5 x 10/100 | 5 x 10/100 |
| Switch Fabric Bandwidth | 1.4 Gbps non-blocking | 1.4 Gbps non-blocking | 1.4 Gbps non-blocking | 1.4 Gbps non-blocking | 1.4 Gbps non-blocking | 1.4 Gbps non-blocking |
| MAC Address Table | 1 K entries | 1 K entries | 1 K entries | 1 K entries | 1 K entries | 1 K entries |
| Silicon Revision | A3 (not recommended for new designs) | B (recommended) | Pre-A3 (legacy) | A3 | B | B |
| Automotive Qualification (AEC-Q100) | Yes | Yes | Yes | Yes | Yes (industrial variant) | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Unit Price (qty 1000, USD) | 5.80 | 5.80 (same tier) | 5.80 (same tier) | 5.80 (same tier) | 5.80 (same tier) | 5.80 (same tier) |
Bảo phân biệt quan trọng
- 5 integrated 10/100 PHYs in a single 128-PQFP (vsKSZ8863RLLI-TR (3-port variant))
- Revision B errata fix (vsKSZ8895MQXIA (this part))
- AEC-Q100 qualification with industrial temp range (vsCommercial-only 5-port switches)
Ghi chú thiết kế
Estimated: route the 5 differential pairs (Port 1-5) with 100-ohm differential impedance and keep each pair length-matched within 50 mil. Place 49.9-ohm 1% termination resistors and 0.1 uF AC-coupling caps close to the KSZ8895MQXIA PHY pins. Provide a continuous ground plane under the IC to minimize EMI. Add 10 uF + 0.1 uF decoupling caps within 5 mm of each 3.3 V and 1.2 V supply pin. Source: Microchip KSZ8895 reference design in datasheet DS00002975B.
Critical: Microchip's official support article states that KSZ8895MQXIA (revision A3) is NOT recommended for new designs - use KSZ8895MQXI (revision B) instead. If you must use MQXIA, apply the workarounds listed in the KSZ8895 errata sheet. The MII reference clock must be 25 MHz (MII mode) or 50 MHz (RMII mode); incorrect frequency causes link failures. Source: support.microchip.com Why-are-KSZ8895-A-not-recommended-for-new-designs.
The 5 integrated PHYs share internal analog grounds. Per Microchip layout guidelines, separate the analog and digital ground planes under the IC and join them at a single point near the 1.2 V LDO output pin. Keep the 25 MHz crystal traces short and surrounded by ground pour. Use transformer modules with 1:1 turns ratio and center-tap for 10/100 BASE-TX. Estimated: total return loss should be <-22 dB over 1-30 MHz.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. AEC-Q100 qualified for automotive applications. Not recommended for new designs per Microchip support article - use KSZ8895MQXI.
