KSZ8893FQL - 3-Port 10/100 Ethernet Switch | Microchip
料号： KSZ8893FQL ✓ 量产中KSZ8893FQL 概述
An Ethernet switch is a Layer 2 network-semiconductor device that receives Ethernet frames on one port, processes them through a switching fabric, and forwards them to another port. The KSZ8893FQL belongs to the managed Ethernet switch hierarchy, combining media access control, physical-layer transceivers, and switching functions for industrial, communications, and embedded network equipment.
Key features include support for two 10/100 copper transceivers, fiber connectivity, three MAC units, a non-blocking switch fabric, and a Layer 2 managed-switch architecture. The KSZ8893FQL supports IEEE 802.3u auto-negotiation, allowing link partners to select a common operating mode. Its single-ended fiber-module connections are identified as TXM1 on pin 49 and RXM1 on pin 46.
Technically, the device combines mixed-signal low-power Ethernet transceivers with frame-buffer and switching resources. The supplied manufacturer documentation describes TS-1000 Operations, Administration and Maintenance support, while the product listing identifies both I2C and SPI management interfaces. These capabilities position it for low-port-count systems requiring copper-to-fiber media conversion or managed Layer 2 connectivity.
Typical uses include industrial Ethernet bridges, serial-to-Ethernet equipment, embedded control networks, factory automation gateways, and compact optical media converters. In a copper-to-fiber link, the switch can bridge a 10/100 Base-T network segment to a 100BASE-FL or 100BASE-SX module without requiring a separate external Ethernet switch.
Designers must account for the large 128-pin PQFP footprint, provide suitable fiber-interface circuitry for the selected optical module, and validate management firmware against the supported register set. Availability, operating-temperature grades, EMC performance, and some electrical limits should be confirmed from the manufacturer datasheet before production release.
This product page combines verified manufacturer and distributor information with application guidance, comparison data, and design considerations that help engineers evaluate the KSZ8893FQL for managed Fast Ethernet and fiber-conversion designs.
直接替换替代料： KSZ8893FQL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料KSZ8893FQL 最大额定值与电气特性
| Product Type | Single-chip 3-port managed Fast Ethernet switch |
| Number of Ports | 3 ports |
| Ethernet Speed | 10/100 Mbps |
| Copper PHY Support | 2 x 10/100 Base-T/TX transceivers |
| Fiber Support | 10/100 Base-FL/SX |
| MAC Units | 3 |
| Switch Fabric | High-speed non-blocking switch fabric |
| Management Interfaces | I2C and SPI |
| Nominal Supply Voltage | 3.3 V |
| Minimum Operating Voltage | 3.135 V |
| Auto-Negotiation Standard | IEEE 802.3u Clause 28 |
| Fiber TXM1 Connection | Pin 49 |
| Fiber RXM1 Connection | Pin 46 |
| 封装 | 128-PQFP (14 mm x 20 mm) |
| 安装类型 | Surface Mount |
| Ethernet Compliance | IEEE 802.3u auto-negotiation |
KSZ8893FQL 128-pqfp (14 mm x 20 mm) 引脚配置指南
KSZ8893FQL（128-pqfp (14 mm 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： KSZ8893FQL.
请参阅 数据手册 以查看完整引脚配置。
典型应用
KSZ8893FQL 适用于 6 应用s: Copper-to-Fiber Ethernet Media Converter, Industrial Ethernet Gateway, Embedded Serial-to-Ethernet Equipment, Factory Automation Network Backbone, Network Management Switch with I2C Control, Telecommunications and Network Equipment.
Copper-to-Fiber Ethernet Media Converter
The KSZ8893FQL fits copper-to-fiber media-converter designs because it integrates 10/100 Base-T/TX connectivity with fiber support for 10/100 Base-FL/SX links. The manufacturer documentation identifies the single-ended fiber-module connections as TXM1 on pin 49 and RXM1 on pin 46. Using the switch alongside the appropriate optical module can shorten the conversion path between a 10/100 copper segment and a fiber segment. The three MAC units and non-blocking fabric support simultaneous Layer 2 forwarding, while I2C and SPI management interfaces allow configuration and monitoring by a host controller. Before layout release, verify the selected module's electrical interface, signal levels, reference circuitry, and required optical-module startup timing against the complete datasheet.
推荐
Industrial Ethernet Gateway
The KSZ8893FQL is suitable for compact industrial gateways that need three managed Fast Ethernet ports and optional fiber uplinks. Its Layer 2 managed-switch architecture, TS-1000 Operations, Administration and Maintenance support, and I2C or SPI control interfaces allow a processor to configure ports, observe status, and perform network administration. The integrated 10/100 transceivers reduce the need for separate PHY devices when the copper network uses 10BASE-T or 100BASE-TX. Industrial deployment requires additional confirmation of temperature grade, isolation strategy, surge protection, and enclosure-related EMC requirements. The 128-PQFP footprint also requires a fine-pitch layout with careful return-path and clock-signal planning.
推荐
Embedded Serial-to-Ethernet Equipment
The KSZ8893FQL can serve as the network-switch element in embedded serial-to-Ethernet bridges, industrial controllers, and legacy-equipment gateways. Three 10/100 Mbps ports permit local device connectivity, uplink capacity, and expansion through its non-blocking switch fabric. A host processor can use the available I2C or SPI management interface for port control and status access. The choice is especially useful when copper and fiber must coexist in the same enclosure without relying on multiple discrete Ethernet switch chips. Firmware developers should obtain the supported register definitions and initialization sequence from Microchip, then validate spanning-tree, port-security, VLAN, and OAM behavior in the target system.
推荐
Factory Automation Network Backbone
The KSZ8893FQL is appropriate for low-port-count factory automation networks that require managed Layer 2 switching and a possible fiber uplink. Two integrated 10/100 transceivers support copper links, while the fiber-capable interface provides a path toward longer-distance or electrically isolated network segments. TS-1000 OAM can support link monitoring and maintenance in managed industrial networks. Because only three ports are available, this device is better suited to a compact cell controller or branch node than a high-density factory backbone. Production designs should confirm the operating-temperature range, electromagnetic-emissions margin, surge requirements, and availability of the exact ordering code before deployment.
推荐
Network Management Switch with I2C Control
The KSZ8893FQL supports compact management-oriented products where a host controller configures Ethernet ports through I2C. The availability of both I2C and SPI interfaces allows implementation teams to select the bus that best matches the embedded controller and required update rate. Three MAC units and a non-blocking switch fabric provide the basic Layer 2 forwarding foundation, while TS-1000 OAM adds operational visibility. For intelligent switches, repeaters, or network appliances, the host firmware must handle initialization, address tables, port configuration, status interrupts, and error recovery. Electrical timing and signal-integrity margins for the management bus should be validated on the final four-layer or multilayer PCB.
推荐
Telecommunications and Network Equipment
The KSZ8893FQL can be used in access, terminal, and private-network equipment where a small managed Ethernet switch must bridge copper and fiber links. Its three 10/100 Mbps ports, integrated mixed-signal transceivers, and fiber-module connections support compact front-end or line-card designs. The device also provides I2C and SPI management paths for a network processor or system controller. For telecommunications equipment, designers must implement the applicable power, grounding, isolation, surge, and regulatory requirements around the line interface; the switch IC does not itself provide isolation. The 128-PQFP package offers ample pins for interface routing, but its 0.5 mm pitch demands controlled assembly, solder-mask, and inspection processes.
推荐
推荐产品汇总
工程参考数据： KSZ8893FQL ——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 |
|---|---|
| Package | 128-PQFP (14 mm x 20 mm) |
| Brand | Microchip Technology |
| Product Type | Single-chip 3-port managed Fast Ethernet switch |
| Port Count | 3 |
| Ethernet Speed | 10/100 Mbps |
| Copper PHY Support | 2 x 10/100 Base-T/TX transceivers |
| Fiber Support | 10/100 Base-FL/SX |
| Management Interface | I2C and SPI |
| Switch Architecture | 3 MAC units and high-speed non-blocking switch fabric |
| Auto-Negotiation | IEEE 802.3u Clause 28 |
| Nominal Supply Voltage | 3.3 V |
| Verified Unit Price | $29.6650 as of 2026-10-28 |
关键差异点
- Integrated fiber connectivity （对比 KSZ8893MQL)
- Three-port managed switching integration （对比 KSZ8893MQL)
- Multiple host-control options （对比 KSZ8893FQL-EVAL)
- IEEE 802.3u link negotiation （对比 KSZ8893FQL-FX)
设计说明
Treat the 128-PQFP as a high-pin-count mixed-signal layout. Place the KSZ8893FQL near the connector and optical-module interfaces, keep copper and fiber traces away from clock and management signals, and provide a continuous ground reference beneath the device. The supplied data identifies TXM1 on pin 49 and RXM1 on pin 46, but complete pin assignments must be taken from the official datasheet before assigning decoupling, clocks, reset, and control functions. Follow the manufacturer's reference-layout and component-placement guidance exactly where it conflicts with generic placement conventions.
Do not assume the nominal 3.3 V rail is sufficient for every operating condition. Obtain the datasheet's minimum and maximum supply voltage, current-consumption curves, startup sequence, and decoupling recommendations before schematic release. Place input and bypass capacitors at their designated pins with short ground returns, and account for the supply-current step of the integrated transceivers. The verified source only provides a nominal 3.3 V and a 3.135 V minimum operating voltage, so other rail requirements remain unverified.
Validate the copper and fiber paths with the actual connector, magnetics, printed-circuit stackup, and optical module selected for the design. The manufacturer identifies the fiber-module interface as single-ended and specifically calls out TXM1 and RXM1, making return-path and reference design especially important. Prototype first with the recommended evaluation platform or reference schematic, then verify rise time, overshoot, eye opening, and interoperability against the selected 10/100BASE-TX and fiber modules.
Do not treat KSZ8893MQL, KSZ8893FQL-FX, or KSZ8893FQL-EVAL as automatic board-level substitutes. The related family naming does not establish an identical 128-pin footprint, management map, fiber interface, or supply configuration. In particular, an evaluation board is a development platform rather than a drop-in IC, while the FX ordering variant requires its own ordering-code verification. Confirm the full ordering code, package, pin compatibility, firmware dependencies, and lifecycle status before substitution.
合规信息
The supplied manufacturer and distributor snippets do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status for KSZ8893FQL. These fields remain unknown rather than inferred.
