{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0404Q0007KE1T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0404Q0007KE1T","canonicalUrl":"https://icboms.com/microchip/DSC400-0404Q0007KE1T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0404Q0007KE1T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series XO (Standard), MEMS-based, dual-output HCSL clock generator, 100 MHz and 156.25 MHz, ±50 ppm stability, 2.25-3.6 V supply, 20-VFQFN exposed pad package.","salesMarkdown":"## Dual HCSL clock source for PCIe and Ethernet reference The DSC400-0404Q0007KE1T is a MEMS-based XO (Standard) that generates two fixed HCSL output frequencies: 100 MHz on output 1 and 156.25 MHz on output 2. These frequencies match the reference clock requirements for PCIe Gen1/2/3 and 10/25 GbE SerDes, making it a direct-fit clock source for a switch, router, or FPGA-based line card. ## Stability and supply tolerance for serial-link timing For a 100 MHz reference, ±50 ppm translates to a ±5 kHz absolute frequency error — well within the ±100 ppm capture range of a standard PCIe receiver PLL. The supply voltage range of 2.25 V to 3.6 V covers 2.5 V and 3.3 V rails commonly found on networking ASICs and FPGAs. The wide input tolerance means the oscillator can share a rail with the core logic without a dedicated LDO. Housed in a 20-VFQFN with exposed pad, 5.00 mm x 3.20 mm body, 0.90 mm height.","metaTitle":"DSC400-0404Q0007KE1T MEMS XO – 100 MHz & 156.25 MHz HCSL","metaDescription":"Active Microchip DSC400 XO (Standard) with dual HCSL outputs: 100 MHz and 156.25 MHz. ±50 ppm stability, 2.25-3.6 V supply, 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":"Tape & Reel (TR)","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":"100MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"-","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":"What are the exact output frequencies and waveform of DSC400-0404Q0007KE1T?","answer":"Output 1 is 100 MHz, output 2 is 156.25 MHz. Both outputs are HCSL (High-Speed Current Steering Logic), the differential signaling standard used for PCIe reference clocks."},{"question":"Can DSC400-0404Q0007KE1T replace DSC400-0404Q0001KE1T?","answer":"The evidence does not list a DSC400-0404Q0001KE1T variant or its frequencies. Without a confirmed pinout and frequency match, treat the two as different order codes — verify the BOM's required output frequencies and the Enable/Disable logic polarity before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0404Q0007KE1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0404Q0007KE1T 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}}