{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0059KI2T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0059KI2T","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0059KI2T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0059KI2T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series, XO (Standard) MEMS oscillator, 4 outputs 100MHz/125MHz HCSL, ±25ppm stability, 2.25V~3.6V supply, -40°C~85°C, 20-VFQFN Exposed Pad package.","salesMarkdown":"## Four HCSL outputs from a single MEMS resonator This DSC400-4444Q0059KI2T delivers four independent HCSL clock outputs, each at 100MHz or 125MHz, from a single MEMS resonator — eliminating the need for multiple oscillators on a PCIe or Ethernet reference clock tree. Supply voltage spans 2.25V to 3.6V, letting the oscillator run from a common 2.5V or 3.3V rail without an extra LDO. The MEMS base resonator gives this oscillator a reliability advantage over quartz in high-vibration or rapid thermal cycling environments, with no wear-out mechanism from a crystal blank. ## Enable/Disable and package layout Housed in a 20-VFQFN with exposed pad (5.00mm x 3.20mm, 0.90mm height), the thermal pad must be soldered to a ground plane for heat sinking and to keep the MEMS die at a stable temperature for frequency accuracy.","metaTitle":"DSC400-4444Q0059KI2T XO (Standard) MEMS Oscillator –","metaDescription":"Active MEMS XO, 4 outputs 100MHz/125MHz HCSL, ±25ppm, -40°C~85°C, 20-VFQFN. Sourced per RFQ.","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":"±25ppm","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":[{"question":"What supply voltage does the DSC400-4444Q0059KI2T need?","answer":"It accepts 2.25V to 3.6V, covering standard 2.5V and 3.3V rails. No external regulator is needed if the board already has one of those rails."},{"question":"Does the DSC400-4444Q0059KI2T support an enable/disable function?","answer":"Yes, it has an Enable/Disable pin. When disabled, the outputs go high-impedance, which helps in power-sequencing or test modes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0059KI2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0059KI2T 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}}