{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-1133Q0079KE2","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-1133Q0079KE2","canonicalUrl":"https://icboms.com/microchip/DSC400-1133Q0079KE2","factsUrl":"https://icboms.com/api/mcp/products/DSC400-1133Q0079KE2","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series, XO (Standard) MEMS oscillator, 4 outputs: 100MHz, 100MHz, 66.666MHz, 25MHz, ±25 ppm stability, 2.25V~3.6V supply, 20-VFQFN exposed pad, -20°C~70°C.","salesMarkdown":"## Quad-output MEMS oscillator for multi-rail timing The DSC400-1133Q0079KE2 is a MEMS-based XO (Standard) oscillator from Microchip that delivers four independent clock outputs from a single 20-VFQFN package: two at 100MHz, one at 66.666MHz, and one at 25MHz. With a ±25 ppm frequency stability and a 2.25V to 3.6V supply range, this part covers 2.5V and 3.3V logic rails without an external regulator — a common requirement in Ethernet switch, FPGA, and base-station timing trees. ## 20-VFQFN exposed-pad layout and thermal management The 20-VFQFN package with exposed pad (5.00mm x 3.20mm body, 0.90mm height) requires a thermal via array under the pad for both heat sinking and mechanical solder-joint reliability — a standard four-layer board with a ground-plane via pattern meets the recommended land pattern. The 0.50mm pitch QFN demands careful solder-paste stencil design to avoid bridging on the perimeter pads; the exposed pad's solder coverage should be 50–70% per IPC-7525 guidelines. ## Active production with no end-of-life pressure","metaTitle":"DSC400-1133Q0079KE2 MEMS XO – Quad Output, ±25 ppm, Active","metaDescription":"Microchip DSC400-1133Q0079KE2 MEMS oscillator: 4 outputs (100MHz, 100MHz, 66.666MHz, 25MHz), ±25 ppm stability, 2.25-3.6V supply, 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":"LVCMOS, 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":"100MHz","Frequency - Output 3":"66.666MHz","Frequency - Output 4":"25MHz","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/6c5c0d0689349a7f21a6b84194918c49.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the DSC400-1133Q0079KE2 compatible with 3.3V logic?","answer":"Yes. The supply voltage range is 2.25V to 3.6V, which covers both 2.5V and 3.3V rails directly. The LVCMOS and LVDS outputs are compatible with 3.3V logic families without level translation."},{"question":"Does the DSC400-1133Q0079KE2 have a pin-compatible alternative in the same family?","answer":"The DSC400 series includes multiple frequency-configuration variants in the same 20-VFQFN package and pinout. A direct pin-compatible alternative would need to match the output frequency plan and supply voltage. Confirm the BOM frequency requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-1133Q0079KE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-1133Q0079KE2 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}}