{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0059KE2T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0059KE2T","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0059KE2T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0059KE2T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series, XO (Standard), MEMS resonator, four HCSL outputs at 100MHz, 125MHz, ±25 ppm stability, 2.25V~3.6V supply, -20°C~70°C, 20-VFQFN exposed pad, Tape & Reel.","salesMarkdown":"## Four HCSL clock lanes at 100/125 MHz The DSC400-4444Q0059KE2T: This DSC400 variant delivers four identical HCSL outputs, each factory-programmed to 100 MHz and 125 MHz. That means a single oscillator can clock a PCIe reference, a 100G Ethernet MAC, and a SerDes PLL from one 5.0×3.2 mm footprint — no external fanout buffer needed. The ±25 ppm frequency stability holds across the full -20°C to 70°C commercial range, which is tight enough for most 100/125 MHz reference designs. ## MEMS resonator vs quartz tradeoffs Supply voltage spans 2.25 V to 3.6 V, so it can run from a 2.5 V or 3.3 V rail without an extra LDO. ## Active lifecycle – no last-time-buy pressure The 20-VFQFN exposed-pad package (5.00×3.20 mm, 0.90 mm height) is a common footprint for multi-output oscillators.","metaTitle":"DSC400-4444Q0059KE2T MEMS XO – 100/125 MHz HCSL, ±25 ppm","metaDescription":"Microchip DSC400-4444Q0059KE2T XO (Standard) with four 100/125 MHz HCSL outputs, ±25 ppm stability, -20°C~70°C, 20-VFQFN.","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":"Tape & Reel (TR)","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/DSC400-4444Q0059KE2T/alternatives.json"},"ai":{"faq":[{"question":"What is the exact output frequency of the DSC400-4444Q0059KE2T?","answer":"All four outputs are factory-set to 100 MHz and 125 MHz (each output carries both frequencies — the part number encodes the frequency plan). The output format is HCSL, which is the standard differential clock for PCIe and 100G Ethernet PHYs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0059KE2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0059KE2T 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}}