{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CI5-045.0000","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CI5-045.0000","canonicalUrl":"https://icboms.com/microchip/DSC1121CI5-045.0000","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CI5-045.0000","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121CI5-045.0000, XO (Standard), 45 MHz, CMOS output, MEMS resonator, AEC-Q100, -40°C to 85°C, 6-SMD No Lead package.","salesMarkdown":"## MEMS oscillator for automotive and industrial timing The DSC1121CI5-045.0000 is a standard XO (crystal oscillator) built around a MEMS resonator rather than a quartz crystal, delivering a fixed 45 MHz output in CMOS logic levels. It is qualified to AEC-Q100, meaning it has passed the automotive-grade stress and reliability tests required for under-hood and cabin electronics. ## Frequency stability and supply flexibility Frequency stability is specified at ±10 ppm, which keeps the clock edge jitter within the budget for a 100BASE-TX Ethernet MAC or a CAN-FD controller without needing an external PLL cleanup. The supply voltage range spans 2.25V to 3.6V, letting the oscillator run from a 3.3V or 2.5V rail without a separate LDO — the internal regulator handles the drop. Maximum supply current is 35 mA when enabled and 22 mA when disabled — the disable function (Enable/Disable pin) cuts the output and reduces draw for power-save modes in battery-backed systems. ## Surface-mount footprint and board integration Packaged in a 6-SMD, No Lead (6-DFN) case measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm — the compact footprint frees board space alongside a microcontroller or PHY. Mounting is surface-mount only, reflow-solder compatible. The no-lead package requires a solder-paste stencil aperture matched to the pad geometry; a 0.50 mm pitch is not used here, so standard DFN layout rules apply.","metaTitle":"DSC1121CI5-045.0000 MEMS XO 45 MHz CMOS AEC-Q100","metaDescription":"Active Microchip DSC1121CI5-045.0000 MEMS oscillator, 45 MHz, CMOS output, ±10 ppm, -40°C to 85°C, AEC-Q100.","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":"AEC-Q100","Function":"Enable/Disable","Frequency":"45 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":"±10ppm","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":"$1.9350","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the frequency and output type of the DSC1121CI5-045.0000?","answer":"It is a 45 MHz oscillator with CMOS output, suitable for driving digital logic inputs directly without additional level translation."},{"question":"Is the DSC1121CI5-045.0000 automotive qualified?","answer":"Yes, it is rated AEC-Q100, meaning it has passed the automotive reliability stress tests (temperature cycling, ESD, latch-up) required for use in vehicle electronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CI5-045.0000","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CI5-045.0000 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}}