{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0059KI1T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0059KI1T","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0059KI1T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0059KI1T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series, XO (Standard) MEMS oscillator, quad HCSL outputs at 100 MHz and 125 MHz, 2.25V–3.6V supply, ±50 ppm stability, -40°C to 85°C, 20-VFQFN exposed pad package.","salesMarkdown":"## Four 100/125 MHz HCSL outputs from a MEMS die The DSC400-4444Q0059KI1T: This DSC400 variant delivers four identical clock outputs, each configurable as 100 MHz or 125 MHz with HCSL logic levels — a single part replaces four discrete XOs on a PCIe or Ethernet reference clock tree. The 2.25V to 3.6V supply span lets you run this oscillator from a 2.5V or 3.3V rail without a dedicated LDO — handy when the only clean rail on the board is 2.5V and you need a 3.3V-compatible HCSL swing. ## 20-VFQFN exposed pad — layout note The 5.00 mm x 3.20 mm body with 0.90 mm height fits a standard 20-VFQFN footprint, but the exposed pad underneath must be soldered to a copper plane with thermal vias. ## Active production — no last-time-buy rush The DSC400 base number covers multiple frequency and stability variants; confirm the full 4444Q0059KI1T suffix matches your BOM before ordering.","metaTitle":"DSC400-4444Q0059KI1T Quad-Output MEMS XO – 100/125 MHz, HCSL","metaDescription":"Microchip DSC400-4444Q0059KI1T XO (Standard) MEMS oscillator: four 100/125 MHz HCSL outputs, 2.25-3.6V supply, ±50 ppm stability, -40°C to 85°C, 20-VFQFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Height":"0.035\\\" (0.90mm)","Output":"HCSL","Series":"DSC400","Package":"Tape & Reel (TR)","Function":"Enable/Disable","Base Resonator":"MEMS","Package / Case":"20-VFQFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.197\\\" L x 0.126\\\" W (5.00mm x 3.20mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC400","Frequency Stability":"±50ppm","Frequency - Output 1":"100MHz, 125MHz","Frequency - Output 2":"100MHz, 125MHz","Frequency - Output 3":"100MHz, 125MHz","Frequency - Output 4":"100MHz, 125MHz","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b1fa89bbb593bb9f15bbf883a84023ea.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0059KI1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0059KI1T 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}}