{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CM1-066.6660T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CM1-066.6660T","canonicalUrl":"https://icboms.com/microchip/DSC1121CM1-066.6660T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CM1-066.6660T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1121 series MEMS XO, 66.666 MHz, CMOS output, 2.25V–3.6V supply, -55°C to 125°C, 6-SMD no-lead package, tape and reel.","salesMarkdown":"## 66.666 MHz MEMS XO for extreme-temperature clocking The DSC1121CM1-066.6660T: Supply voltage spans 2.25V to 3.6V, so it runs directly off a 2.5V or 3.3V rail without an extra LDO, and the Enable/Disable function lets you gate the clock for power-sensitive sleep modes. No last-time-buy window to track. The 6-SMD no-lead package (3.20mm x 2.50mm, 0.90mm seated height) is a standard MEMS oscillator footprint — compatible with many existing layouts for quartz oscillators of the same size, though the MEMS die has different decoupling needs (see FAQ). ## MEMS vs quartz — what changes on the board Maximum supply current is 22 mA — typical for a 66.666 MHz CMOS output at 3.6V. The 50 ppm frequency stability is adequate for most serial communication and processor clocking; if your application requires tighter stability (e.g., 25 ppm or better), the DSC1121 family includes higher-grade options.","metaTitle":"DSC1121CM1-066.6660T MEMS Oscillator 66.666 MHz CMOS -","metaDescription":"Active MEMS XO, 66.666 MHz, CMOS output, -55°C to 125°C, 2.25V-3.6V supply, 6-SMD package. 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)","Output":"CMOS","Series":"DSC1121","Package":"Tape & Reel (TR)","Ratings":"-","Function":"Enable/Disable","Frequency":"66.666 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC1121","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-55°C~125°C","Current - Supply (Max)":"22mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CM1-066.6660T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CM1-066.6660T 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}}