{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CI2-066.6660T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CI2-066.6660T","canonicalUrl":"https://icboms.com/microchip/DSC1121CI2-066.6660T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CI2-066.6660T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1121 series MEMS XO, 66.666 MHz CMOS output, ±25 ppm stability, 2.25-3.6 V supply, AEC-Q100 automotive grade, 6-SMD package.","salesMarkdown":"## MEMS oscillator at 66.666 MHz — automotive CMOS clock source The DSC1121CI2-066.6660T is a MEMS-based XO (standard oscillator) from Microchip's DSC1121 series, delivering a fixed 66.666 MHz CMOS output with enable/disable function. ## Supply voltage range and current draw Operates from 2.25 V to 3.6 V, covering 2.5 V, 3.0 V, and 3.3 V rails common in automotive microcontrollers and transceivers. ## Package and footprint — 6-SMD, no lead Housed in a 6-SMD, no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm. The 0.126\" x 0.098\" footprint is standard for 6-pin MEMS oscillators — layout matches the common 3.2x2.5 mm XO land pattern. Supplied on tape and reel. No direct pin-compatible second source is listed in the DSC1121 family, but the 6-SMD MEMS oscillator footprint is widely adopted across multiple suppliers.","metaTitle":"DSC1121CI2-066.6660T MEMS XO 66.666 MHz AEC-Q100 Microchip","metaDescription":"DSC1121CI2-066.6660T Microchip MEMS XO, 66.666 MHz, CMOS, AEC-Q100, ±25 ppm, -40 to 85°C. Active production. Quoted to order.","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":"AEC-Q100","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":"±25ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C ~ 85°C","Current - Supply (Max)":"35mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"22mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DSC1121CI2-066.6660T an equivalent replacement for a quartz oscillator?","answer":"Yes, functionally it replaces a quartz-based XO at 66.666 MHz with CMOS output. The MEMS resonator provides faster start-up and better shock/vibration tolerance, but the electrical interface (CMOS, enable/disable) and 6-SMD footprint are the same as a standard quartz oscillator. Verify the supply voltage range (2.25-3.6 V) and frequency stability (±25 ppm) match your design."},{"question":"What does the AEC-Q100 rating mean for this oscillator?","answer":"AEC-Q100 certifies the part for automotive-grade reliability: it has passed temperature cycling, ESD, latch-up, and accelerated life tests per the AEC-Q100 stress qualification flow. The -40 to +85 °C operating range suits cabin and engine-bay environments. The MEMS construction inherently resists 50,000 g shock and 70 g vibration, exceeding quartz crystal fragility limits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CI2-066.6660T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CI2-066.6660T 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}}