LAN9355TI/ML - 3-Port 10/100 Managed Ethernet Switch | Microchip
부품 번호: LAN9355TI/ML ✓ 활성LAN9355TI/ML 개요
A managed Ethernet switch is a semiconductor that combines multiple physical-layer transceivers with frame handling, port management, and host-access functions. Its place in the network hierarchy is between a host processor and external Ethernet interfaces. By integrating three ports and management features into one package, the LAN9355 can reduce component count and simplify the design of embedded gateways, control panels, industrial controllers, and connected products.
The LAN9355 family includes three-port managed switching, 10/100 Base-TX operation, optional 10/100 Base-FX optical support, and an I2C management interface. IEEE 1588 timestamping, cable diagnostics, power-on reset, and low-power operation are listed among the device's application-oriented features. Programmable variants allow configuration or firmware customization for production equipment and network-interface subsystems.
Internally, the switch coordinates traffic among its Ethernet ports while providing diagnostic and control functions needed in embedded networks. The I2C interface gives a host processor access to configuration and status functions without requiring a separate external switch controller. Optical support is useful where copper reach is insufficient or where isolation and fiber connectivity are required, while 10/100 Base-TX provides compatibility with standard Ethernet networks.
Typical uses include embedded Linux systems, industrial automation equipment, USB-to-Ethernet products, network appliances, test systems, and compact control platforms. The 12 mm by 12 mm QFN package supports space-conscious designs, but a high-pin-count land pattern requires careful PCB layout, power-plane planning, and thermal management. Production designs should also account for the programming requirements associated with the TI suffix.
The principal design consideration is PCB implementation. Place all required bypass capacitors, magnetic components, optical circuitry, and clock or programming interfaces exactly as shown in the manufacturer reference design. Use differential pair routing with continuous reference planes and avoid placing disruptive switching circuitry beneath the Ethernet PHY area. Confirm programming, reset, and cable-diagnostics requirements before schematic release.
This product page consolidates the manufacturer description, distributor identification, package information, programming features, interface options, and practical selection considerations. It also distinguishes verified technical characteristics from parameters that require confirmation in the complete LAN9355 documentation and PCB design guides.
드롭인 대체품: LAN9355TI/ML — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청LAN9355TI/ML 최대 정격 & 전기적 특성
| Product Type | 3-port managed Ethernet switch |
| Number of Ports | 3 ports |
| Copper Ethernet Support | 10/100 Base-TX |
| Optical Ethernet Support | 10/100 Base-FX |
| Host Management Interface | I2C |
| Programmability | Programmable |
| Timestamp Support | IEEE 1588 |
| Diagnostic Support | Cable diagnostics |
| Reset Feature | Power-on reset |
| Power Feature | Low-power mode |
| 패키지 | 88-QFN (12 mm x 12 mm) |
| 실장 유형 | Surface mount |
| Packaging Type | Tape & Reel |
| Manufacturer Minimum Order Quantity | 2,500 units |
| Order Increment | 2,500 units |
| Reel Quantity | 2,500 units |
| Manufacturer Lead Time | 4 weeks |
| Ethernet Protocol | Ethernet |
LAN9355TI/ML 88-qfn (12 mm x 12 mm) 핀 구성 가이드
LAN9355TI/ML(88-qfn (12 mm x 12 mm) 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: LAN9355TI/ML.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
LAN9355TI/ML 적합 용도: 6 애플리케이션s: Embedded Linux Network Gateway, Industrial Automation Controller, USB-to-Ethernet Peripheral, Optical Network Interface, Connected Test and Measurement Instrument, Compact Control Panel.
Embedded Linux Network Gateway
The LAN9355TI/ML fits an embedded Linux gateway that must present a compact, managed Ethernet interface to an application processor. Its three 10/100 Base-TX ports allow local device connectivity, an upstream network link, and an administration path without requiring three unrelated interface devices. The I2C management interface lets host firmware configure switch registers and monitor status, while cable diagnostics help identify installation faults in remote or inaccessible cabinets. Designers should preserve the TI programming requirements, route all copper and fiber pairs according to the reference design, and verify that 100 Mbps link performance remains suitable for the system traffic profile.
Industrial Automation Controller
The LAN9355TI/ML is suitable for industrial controllers that connect sensors, service equipment, engineering workstations, and supervisory systems over 10/100 Ethernet. Three managed ports allow a controller to form a small local network while the I2C interface provides embedded control over switch behavior. IEEE 1588 timestamping can support time-related network functions, and cable diagnostics can shorten troubleshooting in equipment cabinets. Industrial implementations should verify operating-temperature requirements, isolation strategy, grounding, surge protection, and regulatory EMC requirements against the complete manufacturer documentation before production release.
USB-to-Ethernet Peripheral
The LAN9355TI/ML can serve as the Ethernet-switch element in a compact USB-to-Ethernet or host-interface peripheral. Its three 10/100 Base-TX ports allow the device to bridge a USB-connected host with two additional network segments, avoiding separate Ethernet PHYs on the main PCB. The I2C interface can support configuration from a companion controller, while low-power operation is relevant to USB-powered and energy-conscious products. The final design must account for the switch's supply requirements, startup behavior, cable magnetics, USB-to-Ethernet controller characteristics, and enclosure heat dissipation.
Optical Network Interface
The LAN9355TI/ML is appropriate for equipment needing 10/100 Base-FX optical connectivity in addition to copper Ethernet. A fiber-capable port can provide longer reach than a copper segment and can improve galvanic separation in industrial or campus environments. The switch integrates copper, optical, management, diagnostic, reset, and low-power functions into one 88-QFN device, reducing the number of separate network-interface components. Implementation still requires the manufacturer-recommended optical interface circuitry, suitable fiber and connector selection, correct impedance-controlled layout, and testing that covers insertion loss, link startup, and fault isolation.
Connected Test and Measurement Instrument
The LAN9355TI/ML can provide instrument-cluster networking for test, measurement, and diagnostic systems that need several 10/100 Ethernet links in a small board area. Three ports can connect a host computer, instrument peripheral, and service interface while the I2C path supports software-controlled management. Cable diagnostics can help identify wiring or termination problems, and IEEE 1588 support may assist synchronized operations where timing is relevant. The design should separate sensitive analog or timing circuitry from the Ethernet section, provide stable supplies for the switch and magnetics, and validate packet transfer under the full range of expected traffic and cable lengths.
Compact Control Panel
The LAN9355TI/ML fits compact control panels that connect an embedded controller to local sensors, actuators, service tools, and plant networks. The managed three-port architecture reduces network-interface component count, while low-power mode can help control consumption in standby operation. I2C configuration allows the main controller to initialize ports, read status, and respond to network events without a separate switch microcontroller. For reliable operation, use the manufacturer's reference placement for magnetics and bypass capacitors, keep copper routing away from switching nodes, and define a controlled production programming and configuration process for the TI variant.
엔지니어링 참조 데이터: LAN9355TI/ML — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| Manufacturer | Microchip Technology |
| Product Type | Managed Ethernet switch |
| Number of Ports | 3 ports |
| Copper Ethernet | 10/100 Base-TX |
| Optical Ethernet | 10/100 Base-FX |
| Host Interface | I2C |
| Programmability | Programmable |
| Package | 88-QFN (12 mm x 12 mm) |
| Timestamp Support | IEEE 1588 |
| Cable Diagnostics | Supported |
주요 차별점
- Integrated optical and managed switching functions (vs LAN9352T/ML)
- Single-bus host-management interface (vs LAN9352T/ML)
- Programmable managed-switch configuration (vs LAN9352T/ML)
설계 노트
Follow the Microchip reference layout for the 88-QFN land pattern, exposed-pad connection, magnetic components, and bypass capacitors. The 12 mm by 12 mm package has a high pin count, so verify every ball assignment against the production configuration before releasing artwork. Keep the Ethernet pairs continuous, provide a continuous ground reference beneath them, and route each copper pair as a controlled-impedance differential pair.
Use the manufacturer-specified power network and decoupling arrangement rather than distributing high-frequency current through general board copper. Place required bypass capacitors at their designated power and ground pins with very short return paths, and verify startup current, voltage tolerance, and sequencing against the complete LAN9355 electrical specification. Stable supplies are especially important when optical circuitry and external magnetics are active.
Separate Ethernet magnetics and isolation structures from switching regulators, oscillators, and high-current return paths. Avoid routing clocks, programming signals, and management buses beneath the switch or PHY areas where coupling could affect signal integrity. Apply the reference design's component orientations and keep optical and copper interfaces physically separated to reduce differential crosstalk and maintain controlled return paths.
Do not treat LAN9355TI/ML as interchangeable with a superficially similar Ethernet switch. Confirm the 88-QFN ballout, programming method, firmware configuration, host-interface pins, supply levels, and reset behavior against the exact ordering code. Also confirm current errata for the LAN9355 family and apply any required initialization or firmware workarounds before production testing.
규정 준수 정보
Compliance status must be confirmed from the current Microchip product documentation and the declarations associated with the exact ordering code.
