KSZ8041TLI - 10/100 Ethernet PHY | Microchip Technology
部品番号: KSZ8041TLI ✓ 生産中KSZ8041TLI 概要
An Ethernet PHY is the physical-layer component that converts digital data from a MAC or Ethernet controller into analog signaling for a copper network, while receiving and converting incoming signals back into digital data. In the broader hierarchy, the KSZ8041TLI is an Ethernet interface transceiver, a network interface IC, and a semiconductor for Ethernet connectivity. It is appropriate for industrial control, embedded systems, communications equipment, and other designs requiring a dedicated 10/100 Ethernet front end.
The verified device information identifies support for auto-negotiation through hardware pin strapping on pin 42 or software using register 0h bit 12. Auto-negotiation follows Clause 28 of the IEEE 802.3u specification and allows link partners to select the highest common operating mode. The same 48-pin TQFP package also supports MII, RMII, and SMII host interfaces, allowing designers to match the PHY to different MAC architectures.
The KSZ8041TLI is designed for surface-mount implementation and uses a 3.3 V single-supply architecture. Its mixed-signal approach supports the 10Base-T and 100Base-TX physical layers while controlling power use compared with discrete implementations. The product page also identifies HP Auto MDI/MDIX support, which simplifies connection to both straight-through and crossover cable arrangements in many network designs.
Typical uses include embedded Ethernet controllers, industrial automation modules, serial-to-Ethernet equipment, printer controllers, set-top boxes, and communication appliances. When designing around this PHY, verify the exact MAC interface mode, pin strapping requirements, magnetics selection, and termination network against the manufacturer datasheet. The verified data confirms the functional family and package but does not provide a complete pin list, recommended magnetics part numbers, or detailed timing values.
This product record combines verified distributor and manufacturer information with practical interface-selection guidance, same-package alternatives, pricing context, and design cautions. The comparison and notes help distinguish temperature, packaging, and interface-option differences without treating functionally similar parts as automatically drop-in replacements.
ドロップイン代替品: KSZ8041TLI — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: KSZ8041TLI （同一形状・フットプリント） — 相違点: Device Type, Supported Data Rates.
KSZ8041TLI-S
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8041FTLI
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8041TL
✅ ドロップイン価格はお問い合わせください
データシートを見る →KSZ8041TL-S
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8041TLI-TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8041TLI 仕様
| Device Type | 10Base-T/100Base-TX Ethernet physical-layer transceiver |
| Supported Data Rates | 10 Mbps and 100 Mbps |
| Channel Count | 1 channel |
| Host Interfaces | MII, RMII, and SMII |
| Supply Type | Single supply |
| Typical Operating Supply Voltage | 3.3 V |
| Operating Voltage Range | 3.135 V to 3.465 V |
| Ethernet Standards | IEEE 802.3 and IEEE 802.3u |
| Auto-Negotiation | Enabled by hardware pin strapping on pin 42 or software through register 0h bit 12 |
| Auto-Negotiation Standard | Clause 28 of the IEEE 802.3u specification |
| Package Type | 48-pin TQFP |
| Package Dimensions | 7 mm x 7 mm |
| 実装タイプ | Surface mount |
| ピン数 | 48 pins |
| MDI/MDIX Support | HP Auto MDI/MDIX |
KSZ8041TLI 7 mm x 7 mm ピン配置ガイド
KSZ8041TLI (7 mm x 7 mm パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: KSZ8041TLI.
詳細は データシート をご参照ください。
主な用途
KSZ8041TLI の用途: 6 件s: Industrial Ethernet Control, Embedded Communication Equipment, Serial-to-Ethernet Gateways, Network Printers and Peripherals, Set-Top and Media Devices, Data Acquisition and Monitoring Systems.
Industrial Ethernet Control
The KSZ8041TLI fits industrial Ethernet control modules that need a dedicated 10 Mbps or 100 Mbps physical layer between an embedded controller and copper network infrastructure. Its MII, RMII, and SMII interfaces provide flexibility when the host processor uses a parallel, reduced-pin, or source-synchronous Ethernet connection. The single 3.3 V supply simplifies power planning, while Clause 28 auto-negotiation allows the PHY and link partner to select a common operating speed. For a new design, engineers should confirm the exact operating-temperature grade, select the appropriate Ethernet magnetics, and implement the manufacturer-recommended termination and layout around the 48-pin TQFP device.
おすすめ
Embedded Communication Equipment
KSZ8041TLI is suitable for embedded communication equipment requiring an economical single-channel 10/100 Ethernet endpoint. The transceiver combines 10Base-T and 100Base-TX support with selectable MII, RMII, and SMII host interfaces, allowing one Ethernet PHY family to serve multiple processor architectures. Auto-negotiation can be enabled through pin 42 hardware strapping or software using register 0h bit 12, which simplifies link setup in products that must interoperate with varied switch and router equipment. The 48-pin TQFP footprint requires careful high-speed signal routing, so use the manufacturer reference layout and validate return paths through the external magnetics network.
おすすめ
Serial-to-Ethernet Gateways
The KSZ8041TLI can provide the Ethernet physical layer in a serial-to-Ethernet gateway where an embedded processor must bridge legacy serial data to a 10/100 network. RMII can reduce host interconnect pin demand compared with MII, while SMII offers another timing-oriented interface for compatible source-synchronous controllers. Operating from a single 3.3 V rail helps simplify gateway power architecture, and auto-negotiation improves interoperability with infrastructure that may support both 10 Mbps and 100 Mbps links. The implementation must still include suitable network isolation or magnetics, verified signal-integrity layout, and a stable 3.3 V source within the specified 3.135 V to 3.465 V range.
おすすめ
Network Printers and Peripherals
KSZ8041TLI is appropriate for network printers, scanners, and connected peripherals that require 10/100 Ethernet rather than faster multi-gigabit interfaces. A printer controller with a compatible MII, RMII, or SMII interface can use the PHY to connect to copper Ethernet while retaining a single 3.3 V supply domain. HP Auto MDI/MDIX support can simplify cable compatibility in embedded products, and Clause 28 auto-negotiation lets the device adapt to the available link speed. Since the verified data does not specify all timing, power, and thermal parameters, the final implementation should follow the current manufacturer data sheet and be validated across intended cable lengths and system power states.
おすすめ
Set-Top and Media Devices
The KSZ8041TLI can support 10/100 network connectivity in set-top boxes, media adapters, and compact consumer-electronics products where a full MII interface may be available but a high-speed multi-gigabit PHY would be unnecessary. The PHY supports 10 Mbps and 100 Mbps operation, auto-negotiation, and HP Auto MDI/MDIX, covering common copper-network requirements with a single integrated device. Its 48-pin TQFP package allows a compact surface-mount implementation, though decoupling and analog-supply layout remain critical. Confirm the exact temperature range and all timing requirements before release, and validate Ethernet compliance with the system magnetics and printed-circuit-board stack-up.
おすすめ
Data Acquisition and Monitoring Systems
KSZ8041TLI is useful in distributed data-acquisition and monitoring systems that must deliver measurements through a 10/100 Ethernet network. RMII or SMII can provide a compact connection from a capable controller, while MII remains available for designs designed around a parallel PHY interface. The single 3.3 V operating supply and 100 Mbps auto-negotiation capability align with instrumentation that exchanges moderate control and telemetry data rather than bulk video. Use the PHY with suitable Ethernet magnetics, observe recommended component placement, and isolate analog measurement circuitry from switching and high-speed digital return currents. The manufacturer's data sheet and errata should be consulted for final interface timing and layout requirements.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: KSZ8041TLI — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | KSZ8041TLI-S | KSZ8041FTLI | KSZ8041TL | KSZ8041TL-S | KSZ8041TLI-TR |
|---|---|---|---|---|---|---|
| Package | 48-pin TQFP | 48-pin TQFP | 48-pin TQFP | 48-pin TQFP | 48-pin TQFP | 48-pin TQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Data Rate | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps |
主な差別化要因
- Supports three host-interface styles （vs KSZ8041TLI-S)
- Broad 10/100 rate support with auto-negotiation （vs KSZ8041FTLI)
- Compact surface-mount integration （vs KSZ8041TL)
設計ノート
Place the KSZ8041TLI, its decoupling network, and the Ethernet magnetics according to the manufacturer reference layout. The PHY contains mixed-signal circuitry, so keep the digital host-interface return paths away from the analog line-side section and maintain a continuous ground reference. Verify the PCB stack-up, via placement near ground and supply pins, and isolation-resistor values against the current data sheet before fabrication.
Power the KSZ8041TLI from a stable single 3.3 V rail within the verified 3.135 V to 3.465 V operating range. Place the manufacturer's recommended bypass capacitors directly beside the relevant supply and ground pins, and keep the switching supply or digital converter return current out of the mixed-signal region. Ripple and transient behavior should be verified at the PHY pins rather than inferred from the nominal rail voltage.
Do not treat a shared KSZ8041 family name as proof that every ordering suffix is interchangeable. KSZ8041TL and KSZ8041TLI-TR have different verified temperature limits of 0 C to +70 C and -40 C to +85 C, respectively, while other suffixes require comparison of qualification, lead time, and option fields. Before substitution, confirm the complete pin configuration, operating grade, package, and lifecycle status using the current manufacturer documentation.
Configure auto-negotiation using the manufacturer-supported hardware or software method and avoid imposing contradictory strap and software states. The verified data sheet states that hardware strapping uses pin 42, while software control uses register 0h bit 12. Validate link behavior at both 10 Mbps and 100 Mbps with the intended magnetics and cabling, and confirm margin under worst-case power, temperature, and cable conditions.
コンプライアンス情報
The verified comparison search mentions RoHS and REACH attributes, but the supplied excerpts do not provide a definitive compliance result for KSZ8041TLI. The device is an Ethernet interface IC rather than an automotive-qualified component, so AEC-Q100 is not applicable.
