{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC2044FL1-H0005T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC2044FL1-H0005T","canonicalUrl":"https://icboms.com/microchip/DSC2044FL1-H0005T","factsUrl":"https://icboms.com/api/mcp/products/DSC2044FL1-H0005T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC2044FL1-H0005T, XO (Standard), dual 125MHz HCSL outputs, MEMS base resonator, 14-VFQFN exposed-pad package, -40°C to 105°C operating range.","salesMarkdown":"## Dual 125 MHz HCSL clock from a MEMS resonator HCSL (High-Speed Current Steering Logic) is the standard output type for PCIe Gen1 through Gen4 reference clocks; the 125 MHz frequency matches the PCIe base clock rate, so this part drops into a typical clock buffer or fanout tree without a level translator. The supply voltage spans 2.25 V to 3.6 V, covering both 2.5 V and 3.3 V rails — a single BOM line serves mixed-voltage designs without an intermediate regulator. ## Package and board layout notes The 14-VFQFN with exposed pad (3.20 mm x 2.50 mm body, 0.90 mm height) needs a thermal via array under the package to pull heat into the ground plane — without it the junction temperature rises above the 105°C ambient limit under continuous operation.","metaTitle":"DSC2044FL1-H0005T MEMS XO – Dual 125MHz HCSL, -40°C to 105°C","metaDescription":"Microchip DSC2044FL1-H0005T XO (Standard) with dual 125MHz HCSL outputs, ±50ppm stability, 2.25V-3.6V supply, -40°C to 105°C.","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":"DSC2044","Package":"Tape & Reel (TR)","Function":"Enable/Disable","Base Resonator":"MEMS","Package / Case":"14-VFQFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC2044","Frequency Stability":"±50ppm","Frequency - Output 1":"125MHz","Frequency - Output 2":"125MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-40°C~105°C","Current - Supply (Max)":"60mA (Typ)","Current - Supply (Disable) (Max)":"23 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b91738e9586e6027e62ef034b6604aa1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can DSC2044FL1-H0005T replace a 125 MHz HCSL oscillator from another brand?","answer":"The DSC2044FL1-H0005T is a MEMS-based XO with dual 125 MHz HCSL outputs. A direct pin-compatible replacement depends on the package (14-VFQFN) and supply range (2.25 V to 3.6 V). Confirm the footprint and output type against the existing oscillator before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC2044FL1-H0005T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC2044FL1-H0005T 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}}