{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0404Q0058KE2","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0404Q0058KE2","canonicalUrl":"https://icboms.com/microchip/DSC400-0404Q0058KE2","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0404Q0058KE2","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series, XO (Standard), MEMS base, 100 MHz HCSL output, ±25 ppm stability, 2.25–3.6 V supply, -20 to 70 °C, 20-VFQFN exposed pad, tube","salesMarkdown":"## HCSL output for PCIe and SerDes reference clocks The DSC400-0404Q0058KE2 delivers a 100 MHz HCSL output — the standard logic family for PCIe reference clocks, requiring no external level translation when feeding a PCIe Gen1/2/3 PHY or a SerDes PLL. Start-up time is typically under 5 ms, compared to 10–20 ms for a quartz-based XO — the system clock is valid before the FPGA finishes configuration. Rated for 2.25 V to 3.6 V supply — the same BOM line works on a 2.5 V or 3.3 V rail without changing the oscillator order code. The -20 to 70 °C commercial range covers indoor telecom, office networking, and test equipment; for outdoor or engine-bay deployment, the DSC400 family includes wider-temperature variants. ## Active lifecycle and package footprint The 20-VFQFN exposed pad (5.00 mm × 3.20 mm, 0.90 mm height) requires a thermal via array under the pad for the exposed die attach — the datasheet layout recommendation keeps the junction temperature within the commercial range.","metaTitle":"DSC400-0404Q0058KE2 MEMS XO, HCSL, 100MHz, ±25ppm, Active","metaDescription":"Microchip DSC400-0404Q0058KE2 XO (Standard) with HCSL output, 100MHz, ±25ppm stability, 2.25-3.6V supply, -20 to 70°C. Active production. Request quote.","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":"±25ppm","Frequency - Output 1":"100MHz","Frequency - Output 2":"-","Frequency - Output 3":"100MHz","Frequency - Output 4":"-","Operating Temperature":"-20°C~70°C","Current - Supply (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b1fa89bbb593bb9f15bbf883a84023ea.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DSC400-0404Q0058KE2 compatible with LVPECL receivers?","answer":"No — the output is HCSL (High-Speed Current Steering Logic). HCSL swings 700–900 mV peak-to-peak with a common-mode around 300–400 mV, while LVPECL requires a 1.6 V common-mode and 800 mV swing. A level translator or AC-coupling with bias resistors would be needed; for direct connection, stay with HCSL inputs."},{"question":"Can DSC400-0404Q0058KE2 operate from a 2.5V supply?","answer":"Yes — the supply range is 2.25 V to 3.6 V, so a 2.5 V rail is within spec. The HCSL output swing scales with the supply; at 2.5 V the differential amplitude is typically 700 mV, still within the PCIe Gen1/2/3 receiver input range."},{"question":"Is DSC400-0404Q0058KE2 a direct replacement for a standard crystal oscillator with the same frequency?","answer":"Only if the original oscillator has an HCSL output and the same footprint (20-VFQFN, 5.00 mm × 3.20 mm). Many quartz XOs use LVCMOS or LVPECL — those are not drop-in replacements. The MEMS base also means the supply decoupling and output termination may differ from a quartz design; check the DSC400 layout guide."},{"question":"What is the difference between the DSC400 and DSC600 series?","answer":"The DSC400 is a multi-output MEMS oscillator (up to four independent frequencies), while the DSC600 is a single-output device. The DSC400-0404Q0058KE2 is a two-output variant (100 MHz on outputs 1 and 3). The DSC600 series offers a smaller package (2.5 mm × 2.0 mm) but only one clock output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0404Q0058KE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0404Q0058KE2 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}}