{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1221DI1-21M11840","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1221DI1-21M11840","canonicalUrl":"https://icboms.com/microchip/DSC1221DI1-21M11840","factsUrl":"https://icboms.com/api/mcp/products/DSC1221DI1-21M11840","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC12X1 series, XO (Standard), MEMS resonator, 21.1184 MHz, CMOS output, 6-VDFN 2.50mm x 2.00mm, AEC-Q100, -40°C~85°C","salesMarkdown":"## Automotive-grade timing for CAN and serial buses The DSC1221DI1-21M11840 is a MEMS-based XO (Standard) oscillator from Microchip's DSC12X1 series, delivering a 21.1184 MHz CMOS output from a 6-VDFN package. The 21.1184 MHz frequency is a common multiple for CAN FD bit timing and 100BASE-T1 Ethernet reference clocks, so it fits directly into automotive ECU and gateway clock trees without a PLL multiplier. ## Supply range and output control The supply voltage range spans 2.5V to 3.3V, covering the common 3.3V and 2.5V I/O rails in mixed-voltage automotive designs. ## MEMS reliability vs. quartz in harsh environments The MEMS resonator gives this oscillator a shock tolerance typically 5× higher than quartz — useful for engine-mount electronics or transmission control modules where vibration can induce quartz crystal fractures. The ±50 ppm frequency stability over -40°C to 85°C is adequate for most CAN and Ethernet jitter budgets; if the application requires tighter stability (e.g., ±25 ppm for 100BASE-T1), the DSC12X1 family includes higher-grade options.","metaTitle":"DSC1221DI1-21M11840 MEMS XO – AEC-Q100, 21.1184 MHz, CMOS","metaDescription":"Microchip DSC1221DI1-21M11840 XO (Standard) MEMS oscillator, 21.1184 MHz CMOS output, AEC-Q100 qualified, 2.5V-3.3V supply, 6-VDFN package. 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":"DSC12X1","Package":"Tube","Ratings":"AEC-Q100","Function":"Enable/Disable","Frequency":"21.1184 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":"2.5V ~ 3.3V","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°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":"Is DSC1221DI1-21M11840 AEC-Q100 qualified?","answer":"Yes, the ratings field lists AEC-Q100. This qualifies the oscillator for automotive applications up to 85°C ambient, including under-hood and cabin domains."},{"question":"What is the frequency stability of DSC1221DI1-21M11840?","answer":"This is typical for a standard MEMS XO and suits most CAN and Ethernet clocking needs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1221DI1-21M11840","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1221DI1-21M11840 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}}