{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0022KE1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0022KE1","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0022KE1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0022KE1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series, XO (Standard), MEMS base, 4 HCSL outputs at 125MHz and 100MHz, ±50ppm stability, -20°C~70°C, 20-VFQFN exposed pad, Enable/Disable function","salesMarkdown":"HCSL (High-Speed Current Steering Logic) is the common clock standard for PCIe, SATA, and Ethernet reference clocks; the 125 MHz outputs can serve a PCIe Gen 3/4 root complex while the 100 MHz pair drives the Ethernet PHY or FPGA fabric, all from one oscillator instead of two. ## Package and layout: 20-VFQFN with exposed pad Housed in a 5.00mm x 3.20mm, 20-lead VFQFN with an exposed pad, the part requires the pad to be soldered to a ground plane for thermal management — the MEMS oscillator draws minimal current, but the pad also provides a low-inductance ground return for the HCSL outputs. The 0.035\" (0.90mm) height keeps it compatible with standard mezzanine card spacing. Supply voltage range of 2.25 V to 3.6 V covers 2.5 V and 3.3 V rails commonly used in networking and computing designs — no extra regulator needed if the board already has one of these rails.","metaTitle":"DSC400-4444Q0022KE1 MEMS XO – 125MHz/100MHz Quad HCSL Output","metaDescription":"Microchip DSC400-4444Q0022KE1: MEMS XO, 4 HCSL outputs (125MHz, 100MHz), ±50ppm stability, -20°C~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":"125MHz","Frequency - Output 2":"100MHz","Frequency - Output 3":"100MHz","Frequency - Output 4":"125MHz","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 frequency stability of the DSC400-4444Q0022KE1?","answer":"The frequency stability is ±50 ppm over the -20°C to 70°C operating temperature range. This is typical for commercial-grade networking and computing clocks; if your application requires tighter stability (e.g., ±25 ppm for SyncE or IEEE 1588), the DSC400 family includes other stability grades."},{"question":"Is the DSC400-4444Q0022KE1 RoHS compliant?","answer":"The part is listed as RoHS compliant per Microchip's standard lead-free plating for the DSC400 series. The 20-VFQFN package uses an exposed pad with a matte-tin finish — confirm your assembly profile for lead-free reflow."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0022KE1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0022KE1 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}}