{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC2044FE1-F0022","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC2044FE1-F0022","canonicalUrl":"https://icboms.com/microchip/DSC2044FE1-F0022","factsUrl":"https://icboms.com/api/mcp/products/DSC2044FE1-F0022","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC2044FE1-F0022, XO (Standard) MEMS oscillator, dual 100 MHz HCSL outputs, 2.25 V–3.6 V supply, ±50 ppm stability, -20°C–70°C, 14-VFQFN exposed pad.","salesMarkdown":"## Dual 100 MHz HCSL clock source for PCIe reference The DSC2044FE1-F0022 is a MEMS-based XO (Standard) oscillator delivering two identical 100 MHz HCSL outputs from a single 14-VFQFN package — a dedicated PCIe Gen1/Gen2/Gen3 reference clock generator that eliminates a second oscillator and its associated layout split. The HCSL (High-Speed Current Steering Logic) output swings 0.7 Vpp typical into a 50 Ω termination to ground, matching the differential clock input requirements of Intel PCH, AMD FCH, and most PCIe switch/PHY devices without external level translation. Supply tolerance spans 2.25 V to 3.6 V, so a single BOM line serves both 2.5 V and 3.3 V clock domains — no separate LDO needed when the board has mixed voltage planes. ## Package footprint and board layout notes The 14-VFQFN exposed-pad package measures 3.20 mm x 2.50 mm with a 0.90 mm height — the centre pad must be soldered to a ground-plane island with at least four thermal vias to keep junction temperature within the -20°C to 70°C operating range. HCSL outputs require series termination resistors (typically 33 Ω) placed within 0.5 inch of the output pins to control reflections on the 100 Ω differential pair — omit them and the edge rate degrades beyond the PCIe jitter budget. The base product number DSC2044 covers multiple frequency and stability variants; the -F0022 suffix locks the output frequencies to 100 MHz on both channels with ±50 ppm stability across the -20°C to 70°C range.","metaTitle":"DSC2044FE1-F0022 MEMS Oscillator – Dual 100 MHz HCSL, Active","metaDescription":"DSC2044FE1-F0022 XO (Standard) from Microchip Technology. Dual 100 MHz HCSL outputs, MEMS resonator, 2.25V–3.6V supply, -20°C–70°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":"Tube","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":"100MHz","Frequency - Output 2":"100MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-20°C~70°C","Current - Supply (Max)":"60mA (Typ)","Current - Supply (Disable) (Max)":"23 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/961a0622be7bfe0860b322926ab30ab9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can the DSC2044FE1-F0022 operate at a 2.5 V supply voltage?","answer":"Yes — the supply range is 2.25 V to 3.6 V, so both 2.5 V and 3.3 V rails are supported without an external regulator. The HCSL output swing scales slightly with supply; at 2.5 V the differential peak-to-peak amplitude remains within the PCIe reference clock input spec."},{"question":"Where can I find the datasheet for the DSC2044FE1-F0022?","answer":"The datasheet is published by Microchip under the DSC2044 series. It covers the full family of dual-output MEMS oscillators, including the -F0022 frequency configuration, HCSL output timing specs, and the 14-VFQFN package land pattern. The datasheet is available from Microchip's website or through our product page link."},{"question":"What is the difference between the DSC2044FE1-F0022 and the DSC2044FE1-F0012?","answer":"Both are dual-output MEMS oscillators in the DSC2044 series. The -F0022 suffix specifies 100 MHz on both outputs. The -F0012 suffix configures a different frequency pair — the exact frequencies are listed in Microchip's ordering code table. The package, supply range, and HCSL output type are identical across the suffix variants."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC2044FE1-F0022","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC2044FE1-F0022 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}}