{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0024KE1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0024KE1","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0024KE1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0024KE1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series, XO (Standard) oscillator, MEMS resonator, HCSL output, 2.25V~3.6V supply, -20°C~70°C, 20-VFQFN exposed pad package","salesMarkdown":"## MEMS XO with HCSL output — supply and temperature fit The DSC400-4444Q0024KE1 is an active MEMS-based XO (Standard) oscillator from Microchip's DSC400 series, delivering an HCSL output — the differential current-mode logic common in PCIe reference clocks and high-speed SERDES interfaces. Its wide supply range of 2.25V to 3.6V means it runs from a 2.5V or 3.3V rail without an intermediate LDO, simplifying the power tree. The -20°C to 70°C operating temperature range suits commercial indoor equipment, office networking gear, and consumer appliances — not extended industrial or automotive environments. ## Package and layout — 20-VFQFN with exposed pad Housed in a 20-VFQFN Exposed Pad package measuring 5.00mm x 3.20mm with a 0.90mm height, the DSC400-4444Q0024KE1 requires a thermal pad on the PCB for heat dissipation and mechanical stability. The Enable/Disable function lets the system gate the output clock without removing supply, useful for power-sensitive designs. ## Lifecycle and sourcing — active production","metaTitle":"DSC400-4444Q0024KE1 XO (Standard) HCSL Oscillator","metaDescription":"Active MEMS XO, HCSL output, 2.25V-3.6V supply, -20°C to 70°C, 20-VFQFN. Request RFQ for DSC400-4444Q0024KE1.","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":"-","Frequency - Output 2":"-","Operating Temperature":"-20°C~70°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 is the output frequency of DSC400-4444Q0024KE1?","answer":"The evidence does not list a specific output frequency for this order code. The part is a programmable MEMS XO — the frequency is set at the factory per the ordering code suffix. Confirm the programmed frequency from the original BOM or the device marking."},{"question":"Is DSC400-4444Q0024KE1 a drop-in replacement for quartz oscillators?","answer":"Generally yes, but with caveats. The MEMS resonator offers better shock and vibration immunity than quartz, and the HCSL output is standard for differential clocking. The 20-VFQFN package and pinout differ from legacy quartz footprints — verify the PCB land pattern matches the 5.00mm x 3.20mm exposed-pad layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0024KE1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0024KE1 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}}