{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0059KE2","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0059KE2","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0059KE2","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0059KE2","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO (Standard), 4-output HCSL, 100/125 MHz per channel, ±25 ppm stability, 2.25-3.6 V supply, -20 to 70 °C, 20-VFQFN exposed pad, tube","salesMarkdown":"## Four-channel HCSL clock source with dual-frequency outputs This makes it a direct fit for PCIe Gen1/2/3 reference clocks or 25 MHz Ethernet PHY multiplied up to 125 MHz — one device replaces four discrete oscillators on the BOM. ## Supply voltage tolerance and temperature grade Rated for a 2.25 V to 3.6 V supply, the oscillator accepts 2.5 V or 3.3 V rails without an external LDO — useful when the board has a shared 3.3 V plane and the downstream logic runs at 2.5 V. ## Package and board-level considerations Housed in a 20-VFQFN with exposed pad (5.00 mm x 3.20 mm), the part requires a thermal via array under the pad for heat sinking and a solder stencil aperture that covers 50-70% of the pad area to avoid voiding. Listed as Active by Microchip.","metaTitle":"DSC400-4444Q0059KE2 MEMS XO – 100/125 MHz HCSL, Active","metaDescription":"DSC400-4444Q0059KE2 – Microchip MEMS XO, 4-output HCSL at 100/125 MHz, ±25 ppm, 2.25-3.6V, -20 to 70°C, 20-VFQFN. Active production. Request 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":"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":"±25ppm","Frequency - Output 1":"100MHz, 125MHz","Frequency - Output 2":"100MHz, 125MHz","Frequency - Output 3":"100MHz, 125MHz","Frequency - Output 4":"100MHz, 125MHz","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/DSC400-4444Q0059KE2/alternatives.json"},"ai":{"faq":[{"question":"How can I order DSC400-4444Q0059KE2 or request a quote?","answer":"Submit an RFQ through this page. The part is Active and sourced through independent distribution. Availability and current pricing are confirmed per your BOM quantity at quote time — no stock-holding claim is made here."},{"question":"What are the exact output frequencies of DSC400-4444Q0059KE2?","answer":"All four outputs are independently set to either 100 MHz or 125 MHz. The part ships pre-configured; the datasheet covers the frequency selection logic if you need to verify the strapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0059KE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0059KE2 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}}