{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC2044FI1-H0006T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC2044FI1-H0006T","canonicalUrl":"https://icboms.com/microchip/DSC2044FI1-H0006T","factsUrl":"https://icboms.com/api/mcp/products/DSC2044FI1-H0006T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC2044 series MEMS XO, dual 156.25 MHz HCSL outputs, 2.25V–3.6V supply, ±50 ppm stability, -40°C to 85°C, 14-VFQFN exposed pad, enable/disable function.","salesMarkdown":"## Dual 156.25 MHz HCSL clock for PCIe reference The DSC2044FI1-H0006T delivers two 156.25 MHz HCSL outputs from a MEMS resonator — a common reference clock frequency for PCI Express Gen 1/2/3 and 10 GbE SerDes. Both outputs run at the same frequency, so a single oscillator feeds two clock lanes without an external fanout buffer. HCSL (High-Speed Current Steering Logic) output levels are specified for differential clock distribution with 100-ohm termination, matching the PCIe clock topology directly. The 2.25V to 3.6V supply range covers both 2.5V and 3.3V rails — no separate LDO needed when the board carries either voltage. ## Package and enable/disable control Housed in a 14-VFQFN with exposed pad (3.20 mm x 2.50 mm, 0.90 mm height), the package requires a thermal via array under the pad for heat sinking — the 60 mA typical supply current at 156.25 MHz dissipates about 200 mW, so the pad must be soldered to a ground plane to keep junction temperature within limits.","metaTitle":"DSC2044FI1-H0006T MEMS XO – 156.25 MHz HCSL, Active","metaDescription":"Microchip DSC2044FI1-H0006T MEMS XO, dual 156.25 MHz HCSL outputs, 2.25V–3.6V supply, -40°C to 85°C, ±50 ppm stability, 14-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":"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":"156.25MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-40°C~85°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/a4a5b93a1e9ec778e7ae411306f5121b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output frequency of the DSC2044FI1-H0006T?","answer":"Both outputs are 156.25 MHz, identical frequency, HCSL logic levels."},{"question":"Can the DSC2044FI1-H0006T replace the DSC2044FI1-H0005T?","answer":"Both are in the same DSC2044 series and share the same package and supply range. The H0005T variant has a different output frequency — confirm the BOM frequency requirement before substituting. No pin-compatibility issue is expected within the series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC2044FI1-H0006T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC2044FI1-H0006T 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}}