{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LAN9311-NU","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"LAN9311-NU","canonicalUrl":"https://icboms.com/microchip/LAN9311-NU","factsUrl":"https://icboms.com/api/mcp/products/LAN9311-NU","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology LAN9311-NU Ethernet Switch, 2-Port 10/100 Base-T/TX PHY, 16-bit Interface, I²C, 3.3 V, 255 mA, 128-VTQFP Tray.","salesMarkdown":"## Active production — no EOL watch needed The LAN9311-NU: RoHS3 compliant, so no exemption-based restrictions apply to EU or UKCA markets. The standard commercial temperature grade (0°C to 70°C) suits indoor networking equipment, industrial control panels, and IoT gateway designs that do not require extended-temperature qualification. ## Two-port switch with integrated PHY — BOM consolidation This is a two-port 10/100 Ethernet switch with an integrated 10/100 Base-T/TX PHY on each port. The 16-bit host interface connects directly to an MCU or processor local bus, eliminating the need for a separate MAC-to-PHY bridge chip. The I²C interface provides management access for PHY configuration and status monitoring without consuming host GPIOs. ## 128-VTQFP footprint and thermal design Housed in a 128-VTQFP (14x14 mm body, 0.4 mm pitch) with an exposed paddle. The Tray packaging indicates this is the standard production format — not tape-and-reel. For high-volume pick-and-place, verify that the tray-to-reel transfer is supported by your contract manufacturer or order the reel variant if Microchip offers one. As an active Microchip part, the LAN9311-NU is available through authorized distribution and independent channels.","metaTitle":"Microchip LAN9311-NU Ethernet Switch, 2-Port 10/100","metaDescription":"Active-production two-port 10/100 Ethernet switch with integrated PHY and 16-bit host interface. 3.3 V, 255 mA, 128-VTQFP. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tray","Function":"Switch","Protocol":"Ethernet","Interface":"I²C","Standards":"10/100 Base-T/TX PHY","Package / Case":"128-TQFP","lifecycle_stage":"eol_hot","Current - Supply":"255mA","Voltage - Supply":"3.3V","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"128-VTQFP (14x14)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.71","priceTiers":[{"qty":1,"price":"$13.71000","currency":"USD"},{"qty":25,"price":"$11.41640","currency":"USD"},{"qty":100,"price":"$11.26500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7afdf8186e4d35768390f33b3318b5d6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LAN9311-NU/alternatives.json"},"ai":{"faq":[{"question":"Will LAN9311-NU drop into a design that was specified around USB2514BT/M2 without rewiring?","answer":"No. The USB2514BT/M2 is a USB 2.0 hub controller, not an Ethernet switch. The LAN9311-NU is a two-port 10/100 Ethernet switch with an integrated PHY and a 16-bit host interface — the pinout, protocol, and power rails are completely different. A board respin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/LAN9311-NU","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/LAN9311-NU when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}