KSZ8895FQXC - 5-Port Managed Ethernet Switch | Microchip
料号： KSZ8895FQXC ✓ 量产中KSZ8895FQXC 概述
An Ethernet switch is a Layer 2 network semiconductor that forwards Ethernet frames between connected ports according to MAC addresses. The KSZ8895FQXC integrates five 10/100 Ethernet ports with a configurable managed-switch architecture, allowing multiple embedded devices or computers to share a local Ethernet segment. MII and RMII interfaces connect the switch to a host controller or system-on-chip, while the integrated PHYs simplify implementation of copper Ethernet connections.
The KSZ8895 family provides managed Layer 2 switching, programmable LED indication, cable diagnostics, optical-fiber support, and a low-power mode, as identified in the Microchip product description and distributor feature listing. These capabilities make the device suitable for automotive Ethernet networks, industrial Ethernet equipment, embedded gateways, and compact network appliances. A managed switch also provides better visibility into port operation and link diagnostics than a basic unmanaged switch.
The FQXC ordering designation identifies the device variant offered in a 128-pin PQFP. The package provides 128 electrical positions and is substantially larger than a typical QFN network switch, making the KSZ8895FQXC especially appropriate for designs that prioritize a high pin count and legacy-style leaded-package assembly rather than minimal PCB area. Product-family variants use related package and temperature-grade options, but compatibility must be checked against the exact ordering code.
Typical applications include automotive infotainment and vehicle Ethernet gateways, industrial controllers with multiple 10/100 ports, embedded Ethernet concentrators, and low-power network appliances. The switch can connect several physical network segments to one host processor while providing programmable port-status indication and cable diagnostics. Designers should reserve suitable Ethernet magnetics and compliant connector structures for each copper port and ensure the host interface timing is correctly configured.
A key design consideration is thermal and layout planning for a 128-pin device. Place the controller and memory components needed by the selected platform arrangement according to the manufacturer reference design, keep high-speed host traces short, and provide continuous ground-plane connectivity. Validate magnetics, impedance-controlled traces, isolation requirements, and automotive EMC constraints before releasing the PCB.
This product page combines the exact KSZ8895FQXC ordering information with same-package family alternatives, interface and package comparisons, application guidance, and practical PCB considerations. It also distinguishes confirmed drop-in candidates from options that require engineering review, helping buyers identify where a direct replacement is appropriate and where a redesign is necessary.
直接替换替代料： KSZ8895FQXC ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： KSZ8895FQXC （相同外形与封装尺寸） ——差异在于 Package, Automotive Qualification, Ethernet Speed, Number of Ports, Product Type.
KSZ8895RQXI
✅ 直接替换联系询价
查看数据手册 →KSZ8995MAI
✅ 直接替换联系询价
查看数据手册 →KSZ8895FQXC 最大额定值与电气特性
| Device Type | Layer 2 managed Ethernet switch |
| Number of Ports | 5 ports |
| Ethernet Speed | 10/100 Mbps per port |
| Physical Layer | 10/100 Base-T/TX PHY |
| Host Interface | MII and RMII |
| Network Layer | Layer 2 |
| 封装 | 128-pin PQFP (14 x 20 mm) |
| 引脚数量 | 128 pins |
| 安装类型 | Surface mount |
| Automotive Qualification | Automotive-qualified KSZ8895 family |
| LED Indication | Programmable |
| Cable Diagnostics | Supported |
| Optical Fiber Support | Supported |
| Power Management Feature | Low-power mode |
KSZ8895FQXC 128-pin pqfp (14 x 20 mm) 引脚配置指南
KSZ8895FQXC（128-pin pqfp (14 x 20 mm) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： KSZ8895FQXC.
请参阅 数据手册 以查看完整引脚配置。
典型应用
KSZ8895FQXC 适用于 6 应用s: Automotive Ethernet Gateway, Industrial Ethernet Concentrator, Embedded Network Appliance, In-Vehicle Infotainment Network, Cable Diagnostics and Link Management, Low-Power Network Edge Device.
Automotive Ethernet Gateway
The KSZ8895FQXC fits an automotive Ethernet gateway that consolidates several 10/100 network links into a host processor through MII or RMII. Its five integrated PHYs reduce the number of separate copper-network interface devices, while Layer 2 management, programmable LED indication, and cable diagnostics support service and status functions. The device belongs to an automotive-qualified KSZ8895 family, making it a logical starting point for vehicle-network designs, subject to confirmation of the exact FQXC temperature grade. Designers should use the manufacturer reference layout and validate EMC, magnetics, isolation, and automotive network timing.
推荐
Industrial Ethernet Concentrator
The KSZ8895FQXC is appropriate for an industrial Ethernet concentrator that connects multiple sensors, controllers, or service ports to an embedded host. Five 10/100 Base-T/TX ports provide a compact Layer 2 network without requiring one external PHY per copper link, and the MII/RMII interface connects the switching fabric to a processor. Programmable port LEDs and cable diagnostics help commissioning and fault isolation, while the low-power mode can support energy-conscious installations. The 128-pin PQFP requires careful routing and a larger land pattern than a compact QFN switch, so board-area trade-offs should be evaluated before layout begins.
推荐
Embedded Network Appliance
The KSZ8895FQXC can serve as the central Ethernet switch in an embedded gateway, control terminal, or network appliance with several wired endpoints. A host processor connected through RMII or MII manages traffic across the five 10/100 ports, eliminating several discrete Ethernet interface components and reducing board complexity. Managed Layer 2 operation adds operational visibility compared with an unmanaged switch, and programmable LEDs allow board designers to map link, activity, or fault conditions to physical indicators. Confirm the selected clock source and interface timing against the manufacturer reference design, and preserve continuous ground-plane return beneath the high-speed clock and data routes.
推荐
In-Vehicle Infotainment Network
The KSZ8895FQXC is suited to infotainment and vehicle connectivity platforms that need several 10/100 Ethernet endpoints linked to a host or gateway processor. Its integrated Layer 2 switch reduces the number of network PHY packages, and MII/RMII connectivity permits integration with a compatible system-on-chip. Cable diagnostics can support link troubleshooting, while programmable LEDs can report network status to the vehicle HMI. Because the KSZ8895 family is automotive qualified, engineers can evaluate it for vehicle networking, but the exact FQXC ordering suffix, temperature range, EMC requirements, and automotive qualification criteria must be confirmed before production release.
推荐
Cable Diagnostics and Link Management
The KSZ8895FQXC can be used in equipment where physical-link status must be visible to a host or operator. Its cable-diagnostics feature complements the managed five-port architecture, while programmable LED indication can provide compact port-level feedback without requiring every status to be decoded solely by software. This makes the device useful in test fixtures, communication panels, and industrial gateways where a failed or intermittent copper link needs quick identification. The software control sequence and diagnostic coverage must follow the manufacturer register definitions, and the PCB should provide accessible test points for validating cable behavior during production.
推荐
Low-Power Network Edge Device
The KSZ8895FQXC can support a low-power network edge device that needs several wired endpoints but must reduce activity when traffic is light. Its low-power mode complements the integrated PHYs and managed switch architecture, while the host processor can retain control through MII or RMII. The five-port arrangement is useful for equipment combining data acquisition, service access, and external communications over one Ethernet device. Power-state behavior should be tested with the attached PHYs and system load because entering or leaving a low-power condition can affect link timing and application traffic. Follow the manufacturer power-sequencing and clocking recommendations for deterministic startup.
推荐
推荐产品汇总
工程参考数据： KSZ8895FQXC ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | KSZ8895RQXI | KSZ8995M |
|---|---|---|---|
| Package | PQFP-128 (14 x 20 mm) | PQFP-128 (20 x 14 mm) | PQFP-128 (20 x 14 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | Layer 2 managed Ethernet switch | Managed Ethernet switch | Managed Ethernet switch |
| Pin Count | 128 pins | 128 pins | 128 pins |
关键差异点
- Five integrated managed Ethernet ports （对比 KSZ8995M)
- Automotive-family positioning （对比 KSZ8995M)
- Host-interface flexibility （对比 KSZ8995M)
设计说明
Use the manufacturer 128-pin PQFP land pattern and verify courtyard, drill, solder-mask, and paste geometry against the final PCB fabrication rules. The package occupies a 14 x 20 mm body area, so place the Ethernet magnetics and connectors around the perimeter while maintaining uninterrupted ground-plane continuity. Pin-1 orientation must be checked against both the PCB assembly drawing and the device marking before placement.
Route MII or RMII clock and data signals as a controlled group using the manufacturer reference layout. Keep the RMII or MII interface traces short, avoid unnecessary test pads, and provide a continuous reference plane. Ethernet copper routing must follow the impedance and isolation requirements of the selected magnetics and connector implementation; do not treat switch-edge routing as ordinary low-speed digital routing.
Do not substitute a family variant solely because it also uses a 128-pin PQFP. Compare the exact ordering suffix, temperature grade, automotive qualification, exposed functions, and numbered pinout. The KSZ8895RQXI is the closest documented same-family candidate, while KSZ8995M requires additional review of port count, voltage range, power behavior, and pin compatibility before it can be treated as a drop-in device.
Apply the manufacturer’s recommended supply sequencing and decoupling arrangement. Place required input and bulk capacitors close to their associated power pins, provide a low-impedance ground return, and avoid sharing narrow return paths between switch, PHY, and host-interface circuits. Confirm the exact core and I/O voltage requirements in the datasheet before selecting regulators or planning power-state transitions.
合规信息
Microchip identifies the KSZ8895 family as automotive qualified. Exact RoHS, REACH, lead-free, halogen-free, and conflict-minerals status for the KSZ8895FQXC ordering code should be confirmed from the manufacturer product documentation.
