{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC2044FE1-H0003","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC2044FE1-H0003","canonicalUrl":"https://icboms.com/microchip/DSC2044FE1-H0003","factsUrl":"https://icboms.com/api/mcp/products/DSC2044FE1-H0003","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC2044FE1-H0003, DSC2044 series, MEMS-based XO (Standard), HCSL output, triple-frequency 100MHz, 125MHz, 156.25MHz, ±50ppm stability, 2.25V-3.6V supply, -20°C to 70°C, 14-VFQFN exposed pad.","salesMarkdown":"## Triple-frequency HCSL clock in a single MEMS XO The DSC2044FE1-H0003 is a MEMS-based XO (Standard) that outputs three common reference clocks — 100 MHz, 125 MHz, and 156.25 MHz — on a single HCSL output, covering PCIe Gen1/2/3 and 1Gb/10Gb Ethernet reference frequencies without a separate PLL or fanout buffer. ## Package, footprint, and temperature grade Housed in a 14-VFQFN Exposed Pad package measuring 3.20 mm x 2.50 mm with a height of 0.90 mm, the DSC2044FE1-H0003 fits tight networking line-card layouts; the exposed paddle requires a thermal via pattern under the pad for proper soldering and thermal relief.","metaTitle":"DSC2044FE1-H0003 Microchip MEMS XO, HCSL, 100/125/156.25 MHz","metaDescription":"Microchip DSC2044FE1-H0003 active XO, HCSL output, triple frequency 100/125/156.25 MHz, ±50 ppm stability, 2.25-3.6V supply, -20°C to 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, 125MHz, 156.25MHz","Frequency - Output 2":"100MHz, 125Mhz, 156.25MHz","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/961a0622be7bfe0860b322926ab30ab9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output type of the DSC2044FE1-H0003?","answer":"The output is HCSL (High-Speed Current Steering Logic), the standard differential clock format for PCIe and Ethernet reference clocks. It requires 50-ohm termination to ground at the receiver."},{"question":"What frequencies does the DSC2044FE1-H0003 output?","answer":"It outputs three fixed frequencies: 100 MHz, 125 MHz, and 156.25 MHz. These cover PCIe Gen1/2/3 reference clocks (100 MHz) and 1Gb/10Gb Ethernet reference clocks (125 MHz, 156.25 MHz)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC2044FE1-H0003","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC2044FE1-H0003 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}}