{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1221DA3-21M00000","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1221DA3-21M00000","canonicalUrl":"https://icboms.com/microchip/DSC1221DA3-21M00000","factsUrl":"https://icboms.com/api/mcp/products/DSC1221DA3-21M00000","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1221DA3-21M00000, a 21 MHz MEMS-based XO (Standard) with CMOS output, ±20 ppm stability, AEC-Q100 rated, in a 2.50 mm × 2.00 mm 6-VDFN package.","salesMarkdown":"## 21 MHz MEMS XO for high-temp automotive domains The DSC1221DA3-21M00000 is a 21 MHz MEMS-based oscillator from the DSC12X1 series, delivering a CMOS output with ±20 ppm frequency stability across a -40 to +125°C operating range. Its AEC-Q100 qualification puts it in the Grade 0 temperature band — the same class used for transmission control modules, engine ECUs, and exhaust-aftertreatment sensors where ambient temps regularly exceed 105°C. ## Supply tolerance and enable/disable control The oscillator accepts a 2.25 V to 3.63 V supply, covering both 2.5 V and 3.3 V logic rails without an intermediate LDO — simplifies the power tree in multi-rail designs. ## MEMS resonator vs. quartz — the reliability delta For a drivetrain-mounted ECU or a transmission valve-body controller that sees 10–20 g continuous vibration, the MEMS construction avoids the microphonic frequency shift that can cause jitter on the CAN or FlexRay bus. Housed in a 6-VDFN measuring 2.50 mm × 2.00 mm with a seated height of 0.90 mm, the package fits the compact footprint typical of automotive camera modules, radar sensors, and telematics control units. Surface-mount assembly with a 0.50 mm pitch — the small pad geometry calls for a controlled stencil aperture and a reflow profile aligned with JEDEC J-STD-020 for the 6-VDFN body.","metaTitle":"DSC1221DA3-21M00000 MEMS XO – 21 MHz, AEC-Q100","metaDescription":"Microchip DSC1221DA3-21M00000: 21 MHz MEMS XO, CMOS output, ±20 ppm, AEC-Q100, -40 to +125°C, 6-VDFN. 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":"DSC12X1","Package":"Tube","Ratings":"AEC-Q100","Function":"Enable/Disable","Frequency":"21 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-VDFN","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.098\\\" L x 0.079\\\" W (2.50mm x 2.00mm)","Voltage - Supply":"2.25V ~ 3.63V","Frequency Stability":"±20ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~125°C","Current - Supply (Max)":"27mA (Typ)","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"23mA (Typ)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What supply voltage does the DSC1221DA3-21M00000 accept?","answer":"It operates from 2.25 V to 3.63 V, covering both 2.5 V and 3.3 V rails. The Enable/Disable pin pulls the output to high-impedance and drops supply current to 23 µA typ."},{"question":"Is the DSC1221DA3-21M00000 compatible with 3.3 V logic?","answer":"Yes — the 2.25–3.63 V supply range includes 3.3 V, and the CMOS output swings rail-to-rail, so it drives 3.3 V logic inputs directly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1221DA3-21M00000","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1221DA3-21M00000 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}}