KSZ8462HLI - 3-Port 10/100 Ethernet Switch | Microchip
料号： KSZ8462HLI ✓ 量产中KSZ8462HLI 概述
An Ethernet switch is a semiconductor that forwards Ethernet frames between connected network nodes while supporting dedicated media access control, physical signaling, and port management. The KSZ8462 belongs to the Microchip EtherSynch family, adding IEEE 1588 precision time protocol capabilities to a conventional Layer 2 switch. This makes it a specialized Ethernet interface IC rather than a general-purpose processor or standalone transceiver.
The verified product information identifies three 10/100 Ethernet ports, an IEEE 1588v2-capable EtherSynch architecture, and a flexible 8- or 16-bit host interface. The product page states that the family provides integrated communications and synchronization for industrial Ethernet applications. Its combination of switching, two integrated 10BASE-T/100BASE-TX PHYs, MAC units, and precision-time features reduces the component count required for synchronized network equipment.
The KSZ8462HLI is packaged as a 64-lead LQFP measuring 10 x 10 mm. This surface-mount package provides a substantial pin count for separate port signals, host-bus connectivity, synchronization functions, power, ground, and configuration. The HLI ordering code is listed by DigiKey, Mouser, and other distributors as active, while detailed electrical limits, clock requirements, transceiver characteristics, and absolute maximum ratings require verification against the manufacturer datasheet.
Typical uses include industrial Ethernet gateways, precision-time-aware network bridges, synchronized test equipment, factory automation controllers, embedded communication modules, and Ethernet interfaces for host processors. In these systems, the switch can combine upstream and downstream 10/100 links while the host interface supports device configuration, status access, and network integration. IEEE 1588v2 support is especially relevant where equipment requires more precise network timing than ordinary best-effort Ethernet delivery provides.
Design work should verify the host-bus width, interface voltage levels, clock configuration, magnetic-interface components, bypass-capacitor placement, and pin termination directly against the manufacturer datasheet before layout release. The LQFP footprint also requires adequate copper area, thermal consideration, and assembly-process compatibility. This page synthesizes the verified distributor and manufacturer information with practical engineering guidance and clearly separates confirmed specifications from parameters still requiring datasheet verification.
直接替换替代料： KSZ8462HLI ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
KSZ8462FHLI
✅ 直接替换📋 参考替代料（不在目录中）
KSZ8462HLI 最大额定值与电气特性
| Device Type | IEEE 1588v2-enabled Ethernet switch controller |
| Ethernet Port Count | 3 ports |
| 数据速率 | 10/100 Mbps |
| Integrated PHY Count | 2 10BASE-T/100BASE-TX PHYs |
| Integrated MAC Count | 2 associated MAC units |
| Host Interface Width | 8-bit or 16-bit general bus interface |
| Time Synchronization Standard | IEEE 1588v2 |
| Product Family | EtherSynch |
| 封装 | 64-LQFP (10 x 10 mm) |
| 安装类型 | Surface mount |
| 生命周期状态 | Active |
| Supplier Inventory Example | 1900 pieces at one distributor |
| RoHS | RoHS3 |
| Interface Standards | 10BASE-T and 100BASE-TX |
KSZ8462HLI 64-lqfp (10 x 10 mm) 引脚配置指南
KSZ8462HLI（64-lqfp (10 x 10 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： KSZ8462HLI.
请参阅 数据手册 以查看完整引脚配置。
典型应用
KSZ8462HLI 适用于 6 应用s: Industrial Ethernet Gateway, Precision Time-Aware Network Bridge, Factory Automation Controller, Embedded Communication Module, Synchronized Test and Measurement Equipment, Industrial Network Timing Appliance.
Industrial Ethernet Gateway
The KSZ8462HLI fits an industrial Ethernet gateway because it combines three 10/100 ports with a selectable 8- or 16-bit host interface in one 64-LQFP device. A host processor can use the bus interface to manage forwarding, status, and configuration while the switch connects equipment-side and network-side links. IEEE 1588v2 support also provides a useful foundation for time-aware industrial networks. The main design benefit is reducing discrete PHY, MAC, and switch circuitry, although the host interface timing, clocking, and required external magnetics must be verified before schematic release.
推荐
Precision Time-Aware Network Bridge
The KSZ8462HLI is appropriate for a precision time-aware bridge because its EtherSynch architecture includes IEEE 1588v2 capabilities alongside Layer 2 switching and two integrated 10BASE-T/100BASE-TX PHYs. Such a bridge can extend synchronization across industrial Ethernet segments rather than confining timing functions to a single endpoint. Its 8- or 16-bit general host interface allows a processor to participate in management and time-service processing. Engineers should confirm oscillator requirements, timestamp handling, and timing margins against the manufacturer datasheet before deployment.
推荐
Factory Automation Controller
The KSZ8462HLI supports factory automation designs that need several 10/100 links, embedded network management, and IEEE 1588v2 timing capability. The three-port switch can connect a controller to local equipment and an upstream network, while the host interface avoids requiring a separate external switch controller. This integration reduces board area and firmware complexity compared with a discrete switch arrangement. Deployment decisions must still verify the HLI environmental grade, isolation requirements, magnetic-interface components, and industrial EMC design constraints.
推荐
Embedded Communication Module
The KSZ8462HLI is useful in embedded communication modules where a compact processor-hosted Ethernet interface must support several copper-network connections. Its three-port 10/100 architecture, integrated PHYs and MACs, and 8- or 16-bit host bus simplify the connection between an embedded controller and external Ethernet equipment. IEEE 1588v2 support can improve synchronization in modules that participate in coordinated industrial processes. Layout should preserve the manufacturer's recommended PHY network geometry and provide suitable copper and thermal area beneath the 10 x 10 mm LQFP.
推荐
Synchronized Test and Measurement Equipment
The KSZ8462HLI can support synchronized test and measurement equipment that exchanges commands, results, and timing information over 10/100 Ethernet. The integrated switch provides three ports, while the general host interface permits direct attachment to a test processor or controller. IEEE 1588v2 capability is valuable when multiple instruments must coordinate events using precise network timing. For laboratory-grade equipment, verify clock accuracy, isolation strategy, electromagnetic compatibility, and thermal performance; the available verified data confirms protocol support and package identity but not detailed timing limits.
推荐
Industrial Network Timing Appliance
The KSZ8462HLI is a practical building block for an industrial network timing appliance that distributes Ethernet connectivity and synchronization across equipment. Its EtherSynch design combines Layer 2 switching with IEEE 1588v2 functionality, avoiding the need for a separate timing-only network component in basic designs. The selectable 8- or 16-bit host interface supports management by a processor while the integrated 10BASE-T/100BASE-TX PHYs handle two copper links directly. A production design must validate oscillator tolerance, synchronization accuracy, recovery behavior, and environmental limits against the manufacturer documentation.
推荐
推荐产品汇总
工程参考数据： KSZ8462HLI ——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 | KSZ8462FHLI |
|---|---|---|
| Package | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) |
| Brand | Microchip Technology | Microchip Technology |
| Data Rate | 10/100 Mbps | 10/100 Mbps |
| Integrated PHY Count | 2 PHYs | 2 PHYs |
| Host Interface | 8-bit or 16-bit general bus interface | 8-bit or 16-bit general bus interface |
| Synchronization | IEEE 1588v2 | IEEE 1588v2 |
| Product Family | EtherSynch | EtherSynch |
关键差异点
- Integrated synchronization and switching （对比 KSZ8462FHLI)
- Three-port managed Ethernet connectivity （对比 KSZ8462FHLI)
- Processor-friendly host connectivity （对比 KSZ8462FHLI)
设计说明
Place the KSZ8462HLI and its supporting network components according to the manufacturer reference layout. The two integrated 10BASE-T/100BASE-TX PHYs require controlled copper-routing geometry for reliable operation, while the 64-LQFP footprint needs adequate fanout and escape routing for the 8- or 16-bit host bus. Do not substitute general Ethernet-layout rules for the manufacturer-recommended PHY-to-magnetics and magnetics-to-connector paths; return-path discontinuities and unequal routing can degrade signal integrity and compliance.
Verify supply rails, decoupling values, and sequencing directly from Microchip document DS00002641A because the retrieved data does not expose operating voltage or power-consumption limits. Place required bypass capacitors at their designated IC pins with short, low-inductance connections, and keep switching or high-current paths separate from sensitive Ethernet and timing circuitry. Estimate total board dissipation after adding PHY, magnetics, host-interface, and regulator losses rather than treating the switch IC alone as the complete thermal load.
Do not assume the HLI and FHLI suffixes are automatically interchangeable without checking the manufacturer ordering information. Compare the temperature grade, host-bus configuration, electrical limits, clock requirements, and qualification status against the original schematic. The verified sources identify both ordering codes in the same datasheet family but do not expose their detailed differences, so use the current Microchip datasheet and product change information before approving a substitution.
IEEE 1588v2 synchronization depends on predictable network and clock behavior as well as ordinary Ethernet frame handling. Route the oscillator and timing-sensitive signals away from Ethernet magnetics, high-di/dt power paths, and noisy interfaces, and maintain a continuous ground reference. Validate timestamp accuracy and recovery behavior at the system level using the intended topology; protocol support alone does not guarantee a required synchronization accuracy without suitable reference clocks, network configuration, and calibration.
合规信息
The verified distributor listing identifies the KSZ8462HLI as RoHS3 compliant. REACH, halogen-free status, conflict-minerals reporting, and automotive qualification were not supplied.
