{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0404Q0007KE1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0404Q0007KE1","canonicalUrl":"https://icboms.com/microchip/DSC400-0404Q0007KE1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0404Q0007KE1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO (Standard), dual HCSL outputs at 100 MHz and 156.25 MHz, ±50 ppm stability, -20°C to +70°C, 20-VFQFN exposed pad package.","salesMarkdown":"## Dual HCSL outputs for PCIe clock trees The DSC400-0404Q0007KE1 delivers two HCSL outputs at 100 MHz and 156.25 MHz, the standard reference frequencies for PCIe Gen 1/2/3 and 10 GbE SerDes. The HCSL logic level swings 700-900 mV peak-to-peak into a 50-Ω termination to ground, matching the differential input requirements of most PCIe clock buffers and PHYs without external level translation. ## 20-VFQFN footprint and thermal pad The 20-VFQFN package measures 5.00 mm x 3.20 mm with a 0.90 mm height. The 0.50 mm pitch QFN pads require a solder-mask-defined pad with a 0.25 mm stencil aperture for reliable solder joint formation. Supply voltage range is 2.25 V to 3.6 V, covering 2.5 V and 3.3 V rails common in networking and computing platforms. The ±50 ppm frequency stability over -20°C to +70°C keeps the PCIe spread-spectrum clocking within the ±0 ppm to -5000 ppm downspread window without external compensation.","metaTitle":"DSC400-0404Q0007KE1 – Microchip MEMS XO, HCSL","metaDescription":"DSC400-0404Q0007KE1: Active Microchip MEMS XO, dual HCSL outputs at 100 MHz and 156.25 MHz, ±50 ppm, -20°C to +70°C, 20-VFQFN. Sourced per RFQ.","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":"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 is the output logic type of DSC400-0404Q0007KE1?","answer":"The output is HCSL (High-Speed Current Steering Logic), a differential standard with a typical swing of 700-900 mV into a 50-Ω load to ground. It is the standard reference for PCIe clock distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0404Q0007KE1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0404Q0007KE1 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}}