{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0404Q0020KE1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0404Q0020KE1","canonicalUrl":"https://icboms.com/microchip/DSC400-0404Q0020KE1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0404Q0020KE1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400-0404Q0020KE1, XO (Standard) MEMS oscillator, dual HCSL outputs at 125 MHz and 100 MHz, ±50 ppm stability, 2.25V–3.6V supply, 20-VFQFN exposed-pad package.","salesMarkdown":"## Dual HCSL clock at 125 MHz and 100 MHz The DSC400-0404Q0020KE1: This MEMS-based XO delivers two HCSL outputs: 125 MHz on Output 1 and 100 MHz on Output 2, making it a direct fit for PCIe Gen1/2/3 reference clocks and 100 MHz Ethernet MAC/SERDES applications. ## MEMS resonator vs quartz — sourcing and reliability angle For a production line that has seen quartz allocation issues, this is a practical alternative. ## Package and layout note: 20-VFQFN exposed pad The 20-VFQFN with exposed pad (5.00 mm x 3.20 mm body, 0.90 mm height) requires a thermal via array under the pad for proper heat dissipation.","metaTitle":"DSC400-0404Q0020KE1 MEMS Oscillator – 125 MHz & 100 MHz","metaDescription":"Microchip DSC400-0404Q0020KE1 XO (Standard) with dual HCSL outputs at 125 MHz and 100 MHz. MEMS resonator, active lifecycle, -20°C to 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":"Tube","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":"±50ppm","Frequency - Output 1":"125MHz","Frequency - Output 2":"100MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","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/DSC400-0404Q0020KE1/alternatives.json"},"ai":{"faq":[{"question":"Does the DSC400-0404Q0020KE1 require external termination resistors for the HCSL outputs?","answer":"HCSL outputs typically need a 50-ohm pull-up to VDD and a 50-ohm pull-down to GND at the receiver end to set the correct swing. The datasheet for the DSC400 series should show the recommended termination — confirm the layout against that application note."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0404Q0020KE1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0404Q0020KE1 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}}