{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0038KI1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0038KI1","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0038KI1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0038KI1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series, XO (Standard) MEMS oscillator, quad HCSL outputs: 100 MHz, 156.25 MHz, ±50 ppm stability, -40 to +85°C, 2.25-3.6 V supply, 20-VFQFN exposed pad package","salesMarkdown":"## Quad-output MEMS clock generator — 100 MHz and 156.25 MHz on four lanes The DSC400-4444Q0038KI1 is a MEMS-based XO (Standard) that delivers four HCSL outputs: Output 1 and Output 4 each provide 100 MHz and 156.25 MHz, while Output 2 and Output 3 are fixed at 156.25 MHz. This frequency plan is common in networking and data-communications boards where a 100 MHz reference feeds the Ethernet PHY and 156.25 MHz drives the FPGA or SerDes transceiver — one device replaces two or three single-output oscillators. ## Active production — no last-time-buy risk Microchip lists the DSC400-4444Q0038KI1 as Active. The 2.25 V to 3.6 V supply range covers common 2.5 V and 3.3 V rails without an extra regulator. ## 20-VFQFN footprint — thermal pad and fan-out The 5.00 mm × 3.20 mm body with 0.90 mm height fits tight card-edge profiles.","metaTitle":"DSC400-4444Q0038KI1 MEMS XO – Quad Output 100/156.25 MHz","metaDescription":"Active Microchip DSC400 XO, MEMS resonator, quad HCSL outputs: 100 MHz & 156.25 MHz. -40 to +85°C, 2.25-3.6V. 20-VFQFN. Quoted to order.","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":"100MHz, 156.25MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"156.25MHz","Frequency - Output 4":"100MHz, 156.25MHz","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":"How can I order the DSC400-4444Q0038KI1 or request a quote?","answer":"The DSC400-4444Q0038KI1 is an active Microchip product. It is quoted to order against your BOM quantity through our independent distribution channel — no stock-holding claim, availability and current pricing confirmed at RFQ. Submit a request with your target quantity and delivery window."},{"question":"What frequencies does the DSC400-4444Q0038KI1 output?","answer":"Output 2 and Output 3 are fixed at 156.25 MHz. All four outputs are HCSL logic levels."},{"question":"Is the DSC400-4444Q0038KI1 suitable for outdoor or industrial environments?","answer":"Yes — the -40°C to +85°C operating temperature qualifies it for outdoor telecom cabinets, factory-floor automation, and engine-bay electronics where commercial-grade (0°C to 70°C) parts would fail cold start or high-ambient soak."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0038KI1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0038KI1 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}}