KSZ8001SA3 - 10/100 Ethernet Transceiver | Microchip | 48-SSOP
料号： KSZ8001SA3 ✓ 量产中KSZ8001SA3 概述
An Ethernet transceiver is an interface integrated circuit that converts logical data into signals suitable for a twisted-pair network and receives those signals in the opposite direction. Within the network hierarchy, the KSZ8001SA3 is an Ethernet interface IC and a physical-layer device. It connects a digital MAC through MII, RMII, or SMII to a 10/100 Ethernet network, while a magnetics-based network interface and appropriate PCB routing complete the physical link.
The principal verified features are support for full MII, RMII, and SMII operation, compatibility with 10/100-Mbit Ethernet links, operation from a 1.8 V or 3.3 V supply, and a commercial temperature range of 0°C to +70°C. The 48-SSOP package provides a relatively high pin count for separate data, control, clock, and analog connectivity. That pin count can simplify compatibility with an established 48-pin Ethernet interface layout while still requiring careful signal-integrity and power planning.
The KSZ8001SA3 is designed to operate as the physical-layer interface between a network media access controller and the external Ethernet magnetics. MII provides separate transmit and receive data paths, RMII reduces the required interface signals, and SMII provides a serial management-oriented option. Selection among these modes depends on the host controller, clocking scheme, firmware, and PCB layout; the interface mode cannot be changed merely by substituting another package without checking the complete pin-level design.
Typical applications include industrial Ethernet control equipment, embedded routers and switches, industrial automation controllers, network-connected test instruments, and embedded systems requiring 10/100-Mbit connectivity. In these systems, the KSZ8001SA3 handles the Ethernet physical layer, while the host processor or dedicated controller handles higher-layer traffic. The device should be paired with a compatible Ethernet controller, network transformer or integrated magnetics, suitable decoupling, and a layout that separates sensitive analog and clock paths from noisy digital circuitry.
The primary design consideration is to validate the complete interface rather than relying only on the package name. Confirm the 48-SSOP footprint dimensions, exposed or non-exposed pad arrangement, pin assignments, strap options, clock requirements, and register behavior against the manufacturer documentation before layout release. Maintain short supply paths, place decoupling close to the relevant pins, and use a controlled-impedance layout for the network differential pairs.
This page consolidates the verified protocol, package, supply-voltage, and temperature information with practical application guidance and sourcing context. It also identifies the principal verification gaps: current price, detailed electrical limits, lifecycle classification, compliance declarations, and a complete manufacturer-confirmed pin map were not present in the supplied source data and are therefore not guessed.
直接替换替代料： KSZ8001SA3 ——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KSZ8001SA3 规格参数
| Ethernet Link Speed | 10/100 Mbit/s |
| Supported Host Interfaces | MII, RMII, SMII |
| Transceiver Configuration | Full-duplex |
| Digital Supply Voltage | 1.8 V or 3.3 V |
| 工作温度 | 0°C to +70°C |
| 封装 | 48-SSOP surface-mount package |
| 安装类型 | Surface mount |
| Port Count | 1 Ethernet port |
| Physical Layer | 10/100 Ethernet transceiver |
KSZ8001SA3 48-ssop surface-mount package 引脚配置指南
KSZ8001SA3（48-ssop surface-mount package 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： KSZ8001SA3.
请参阅 数据手册 以查看完整引脚配置。
典型应用
KSZ8001SA3 适用于 6 应用s: Industrial Ethernet Control Equipment, Embedded Router and Gateway, Network-Connected Test Instrument, Automated Data Acquisition Node, Networked Embedded Controller, Compact Network Interface Module.
Industrial Ethernet Control Equipment
The KSZ8001SA3 fits industrial control equipment that needs a 10/100-Mbit Ethernet physical-layer endpoint for a controller, sensor gateway, or remote I/O module. Its verified support for MII, RMII, and SMII allows the host processor's MAC interface to determine the board architecture. The 1.8 V or 3.3 V digital supply option can simplify integration with processors operating on common low-voltage rails. However, the 0°C to +70°C rating means it should not be selected for wider industrial-temperature requirements without an appropriate qualified alternative. The external Ethernet magnetics, isolation boundary, reference clock, and controlled-impedance differential routing must be designed and verified separately.
推荐
Embedded Router and Gateway
An embedded router or protocol gateway can use the KSZ8001SA3 as its 10/100 Ethernet physical-layer interface when a host processor provides a compatible MII, RMII, or SMII controller. The transceiver's support for three interface modes makes it useful across platforms with different MAC clocking and signal arrangements, while its full-duplex operation suits bidirectional network traffic. The 1.8 V or 3.3 V digital supply choice must be coordinated with the host voltage plan and I/O standards. Because no detailed power-consumption figures were supplied, thermal and power budgets should be calculated from the manufacturer operating data before volume production.
推荐
Network-Connected Test Instrument
The KSZ8001SA3 can provide wired network connectivity in a test instrument, data acquisition system, or service interface when the embedded controller supports one of its MII, RMII, or SMII paths. This is particularly useful where a legacy or highly integrated host requires a dedicated Ethernet transceiver rather than a combined controller-and-PHY solution. The commercial 0°C to +70°C range covers many indoor bench and laboratory environments. Designers should place the transceiver close to the network connector and magnetics, preserve controlled differential impedance, and isolate switching supplies from sensitive receive paths. Firmware must also initialize the device using its documented register and strap requirements.
推荐
Automated Data Acquisition Node
For an automated acquisition node, the KSZ8001SA3 can serve as the 10/100-Mbit Ethernet physical layer beneath a real-time processor or digital controller. RMII may reduce host-interface pin count when supported by the MAC, while MII can suit systems requiring separate clock and data paths. SMII provides an additional supported host-interface option for compatible designs. The transceiver does not replace an Ethernet magnetics assembly or isolation components, so those parts remain part of the complete network path. Designers should validate interrupt, clocking, and interface-mode behavior in hardware, particularly when firmware changes mode or the board must interoperate with multiple external equipment platforms.
推荐
Networked Embedded Controller
The KSZ8001SA3 is applicable to a networked embedded controller that must bridge local I/O or actuator functions to a 10/100-Mbit Ethernet network. The broad host-interface support lets engineers match the device to an existing controller rather than changing the processor solely to accommodate a fixed MII arrangement. Operation from a 1.8 V or 3.3 V digital supply supports common embedded logic levels, but the complete interface voltage compatibility must still be confirmed. The 48-SSOP package requires careful escape routing from the host device to the transceiver and magnetics. PCB checks should include return paths for every supply pin, defined test points, and controlled separation between the network differential pair and digital clocks.
推荐
Compact Network Interface Module
The KSZ8001SA3 can form the core of a compact add-in network interface for an embedded platform, provided the host provides MII, RMII, or SMII signaling and the board has a verified 48-SSOP footprint. The multi-protocol support is valuable when one module is intended for several carrier boards with different MAC implementations. Its surface-mount package is suitable for automated assembly, while the 0°C to +70°C operating range suits indoor modules. Before release, the engineer must verify body size, lead pitch, exposed-pad requirements, pin numbering, and connector-side magnetics because those details were not present in the supplied source data. A prototype should also validate clock jitter, startup sequencing, and link negotiation.
推荐
推荐产品汇总
工程参考数据： KSZ8001SA3 ——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 | 48-SSOP |
| Brand | Microchip Technology |
| Ethernet Link Speed | 10/100 Mbit/s |
| Supported Host Interfaces | MII, RMII, SMII |
| Digital Supply Voltage | 1.8 V or 3.3 V |
| Operating Temperature | 0°C to +70°C |
| Transceiver Configuration | Full duplex |
| Mounting Type | Surface mount |
| Port Count | 1 |
| Price at Quantity 1 | Quotation required; no verified price supplied |
关键差异点
- Supports three Ethernet host-interface formats in one transceiver （对比 KSZ8721B-TR)
- Supports both 1.8 V and 3.3 V digital operation （对比 KSZ8721B-TR)
- Established commercial-temperature package configuration （对比 KSZ8721B-TR)
设计说明
Confirm the exact 48-SSOP footprint against the manufacturer package drawing before routing. The supplied data identifies the package and one result gives a 48-BSSOP body width of 0.295 inch or 7.50 mm, but it does not provide the complete lead span, pitch, or pad schedule. Place the device near the Ethernet connector and magnetics, provide short differential escapes, and route each supply connection directly to local decoupling.
Treat the Ethernet differential pair as a controlled-impedance structure and keep it away from clocks, switching-node copper, and high-speed digital return paths. Use a continuous reference plane where practical and verify the magnetics-to-transceiver trace geometry against the selected Ethernet implementation. Although the interface supports MII, RMII, and SMII, each mode has different clocking and signal-integrity requirements that must be validated at the system level.
Build the power tree around the verified ability to operate from 1.8 V or 3.3 V, but do not assume that every internal or transceiver rail shares that voltage. The supplied data does not identify all rail names, current limits, startup sequencing, or analog-supply requirements. Obtain the manufacturer electrical data before assigning decoupling values, then place each required capacitor at its associated supply pin and verify ripple and startup on hardware.
Do not select a replacement based only on the 48-SSOP package name. A valid drop-in candidate must match the physical footprint and every relevant host-interface function, including MII, RMII, SMII, clocking, supply voltage, strap configuration, and initialization registers. The supplied cross-reference results contain no verified substitute MPN, so any proposed alternative should be checked through Microchip's cross-reference search and the manufacturer datasheet before procurement.
合规信息
No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration was included in the supplied verified data. AEC-Q100 is treated as not applicable because the verified operating range is 0°C to +70°C and no automotive qualification is stated.
