{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UPD350D/Q8X","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"UPD350D-Q8X","canonicalUrl":"https://icboms.com/microchip/UPD350D-Q8X","factsUrl":"https://icboms.com/api/mcp/products/UPD350D%2FQ8X","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology UPD350D/Q8X USB Controller, SPI interface, USB 3.0 standards, 28-VFQFN Exposed Pad package, Tray.","salesMarkdown":"## Device identity and interface The UPD350D/Q8X from Microchip Technology is a USB controller with an SPI interface, supporting USB 3.0 standards. This places it in the role of a dedicated USB protocol handler that communicates with a host processor over a serial peripheral interface, offloading USB timing and state-machine management from the main MCU. Supplied in a 28-VFQFN exposed-pad package (4x4 mm body, 28-QFN supplier device package), delivered in tray format. The exposed pad under the QFN requires a thermal via pattern in the PCB to conduct heat to the ground plane — the datasheet's recommended land pattern should be followed for solder-joint reliability and thermal performance. ## Lifecycle and compliance ROHS3 compliant, which covers the full RoHS exemption list including lead in high-melting-temperature solders.","metaTitle":"Microchip UPD350D/Q8X USB Controller, SPI, 28-QFN","metaDescription":"Microchip UPD350D/Q8X USB 3.0 controller with SPI interface in 28-VFQFN exposed-pad package. Active production, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tray","Function":"Controller","Protocol":"USB","Interface":"SPI","Standards":"USB 3.0","Package / Case":"28-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Supplier Device Package":"28-QFN (4x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.66","priceTiers":[{"qty":1,"price":"$1.66000","currency":"USD"},{"qty":25,"price":"$1.51520","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8f7cdf90e7a71185e1a576ed9483f231.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UPD350D%2FQ8X/alternatives.json"},"ai":{"faq":[{"question":"What package does UPD350D/Q8X come in?","answer":"It is supplied in a 28-VFQFN exposed-pad package (4x4 mm, 28-QFN supplier device package), shipped in tray format."},{"question":"Will UPD350D/Q8X drop into a board designed for USB2514BT/M2?","answer":"No — the USB2514BT/M2 is a USB hub controller with a USB interface, while the UPD350D/Q8X is a USB controller with an SPI interface. They serve different roles in the system and are not pin-compatible or functional drop-in replacements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/UPD350D-Q8X","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/UPD350D-Q8X 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}}