{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CM2-040.0000","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CM2-040.0000","canonicalUrl":"https://icboms.com/microchip/DSC1121CM2-040.0000","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CM2-040.0000","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121 series, XO (Standard) oscillator, 40 MHz CMOS output, MEMS resonator, 2.25V~3.6V supply, ±25 ppm stability, -55°C~125°C, 6-SMD no-lead package, tube.","salesMarkdown":"## 40 MHz MEMS oscillator for extreme-temperature timing The DSC1121CM2-040.0000 is a 40 MHz XO (Standard) oscillator built on a MEMS resonator rather than a quartz crystal, delivering a CMOS output from a 2.25V to 3.6V supply rail. ## MEMS vs quartz — what changes on the BOM Because the base resonator is MEMS, the DSC1121CM2-040.0000 is not a direct pin-for-pin replacement for a quartz-based 40 MHz oscillator — the startup time, phase-noise profile, and aging characteristics follow MEMS behavior, not quartz. The wide supply range (2.25V to 3.6V) means it can run from a 2.5V or 3.3V rail without a separate regulator, which simplifies the power tree in mixed-voltage designs. ## 6-SMD no-lead — footprint and layout notes Housed in a 6-SMD, No Lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm (0.035\"). The small footprint suits space-constrained boards in handheld or embedded modules.","metaTitle":"DSC1121CM2-040.0000 MEMS Oscillator – 40 MHz CMOS","metaDescription":"Microchip DSC1121CM2-040.0000: 40 MHz XO, MEMS resonator, CMOS output, 2.25-3.6V supply, ±25 ppm stability, -55°C to +125°C, 6-SMD. 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)","Output":"CMOS","Series":"DSC1121","Package":"Tube","Ratings":"-","Function":"Enable/Disable","Frequency":"40 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":"-55°C~125°C","Current - Supply (Max)":"35mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"22mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the DSC1121CM2-040.0000 a direct replacement for a standard 40 MHz quartz crystal oscillator?","answer":"Not without checking the system timing budget. The MEMS resonator has different startup behavior, jitter, and aging characteristics than a quartz crystal. The output is CMOS and the supply range is 2.25V to 3.6V, so it can fit the same socket electrically, but the phase-noise profile and frequency stability (±25 ppm) must be verified against the application's timing requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CM2-040.0000","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CM2-040.0000 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}}