{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0031KE1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0031KE1","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0031KE1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0031KE1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO (Standard), four HCSL outputs at 156.25 MHz each, ±50 ppm stability, 2.25 V to 3.6 V supply, -20°C to 70°C, 20-VFQFN exposed-pad package.","salesMarkdown":"## Four 156.25 MHz HCSL lanes from one MEMS oscillator The DSC400-4444Q0031KE1 is a MEMS-based XO delivering four identical 156.25 MHz HCSL outputs from a single 20-VFQFN package. For a timing tree that needs to distribute a common reference to multiple PCIe or 10GbE PHY lanes, this replaces four separate oscillators and their associated termination resistors. The MEMS resonator eliminates the quartz-crystal startup margin and frequency-pull issues that can appear at temperature extremes — the ±50 ppm stability holds across the -20°C to 70°C commercial range without a load-capacitance tuning step. ## Supply flexibility and enable/disable control The 2.25 V to 3.6 V supply range covers both common rails directly — no intermediate LDO needed. ## Active production, no obsolescence watch","metaTitle":"DSC400-4444Q0031KE1 MEMS XO – 156.25 MHz HCSL Quad Output","metaDescription":"Microchip DSC400-4444Q0031KE1: MEMS XO, 156.25 MHz HCSL x4, ±50 ppm, 2.25-3.6 V, -20°C to 70°C, 20-VFQFN. Active production.","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":"Tube","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":"156.25MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"156.25MHz","Frequency - Output 4":"156.25MHz","Operating Temperature":"-20°C~70°C","Current - Supply (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b1fa89bbb593bb9f15bbf883a84023ea.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0031KE1/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0031KE1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0031KE1 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}}