{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4334Q0023KI2","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4334Q0023KI2","canonicalUrl":"https://icboms.com/microchip/DSC400-4334Q0023KI2","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4334Q0023KI2","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO, 20-VFQFN package, dual outputs 100 MHz and 156.25 MHz, HCSL/LVDS selectable, ±25 ppm stability, 2.25-3.6 V supply, -40 to 85°C","salesMarkdown":"## Two reference clocks from one MEMS die The DSC400-4334Q0023KI2 is a MEMS-based XO that delivers two independent output frequencies: 100 MHz on output 1 and 156.25 MHz on output 2. That pair — 100 MHz for the system bus or FPGA fabric clock, 156.25 MHz for the 10GbE or PCIe reference — lets a single oscillator serve two clock domains, saving a second crystal and its load caps. The output format is pin-selectable between HCSL and LVDS. HCSL is the native signaling for PCIe reference clocks; LVDS is common on FPGA clock inputs and SERDES. One part covers both without a level translator. ## Industrial temp and ±25 ppm stability Supply voltage spans 2.25 V to 3.6 V, so it runs from a 2.5 V or 3.3 V rail without a separate regulator. Housed in a 20-VFQFN with exposed pad (5.00 mm x 3.20 mm, 0.90 mm height). The 0.50 mm pitch QFN demands a solder-paste stencil aperture that matches the pad geometry; a 4-mil stencil is typical.","metaTitle":"DSC400-4334Q0023KI2 MEMS XO – 100 MHz & 156.25 MHz","metaDescription":"Microchip DSC400-4334Q0023KI2 dual-output MEMS oscillator: 100 MHz & 156.25 MHz, HCSL/LVDS, ±25 ppm, -40 to 85°C, 20-VFQFN. Active production.","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, LVDS","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":"156.25MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ddbd3c4bac7f1d0d798266c8e96065cf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the DSC400-4334Q0023KI2 support both HCSL and LVDS outputs?","answer":"Yes, the output format is selectable between HCSL and LVDS. HCSL is the standard for PCIe reference clocks; One part covers both without an external level translator."},{"question":"What are the output frequencies of the DSC400-4334Q0023KI2?","answer":"Output 1 is 100 MHz; output 2 is 156.25 MHz. This pair covers a system bus or FPGA fabric clock (100 MHz) and a 10GbE or PCIe reference (156.25 MHz)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4334Q0023KI2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4334Q0023KI2 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}}