{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CI2-051.8400T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CI2-051.8400T","canonicalUrl":"https://icboms.com/microchip/DSC1121CI2-051.8400T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CI2-051.8400T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121CI2-051.8400T, XO (Standard) 51.84 MHz, CMOS output, MEMS resonator, ±25 ppm stability, -40 to 85°C, AEC-Q100, 6-SMD no lead, Tape & Reel","salesMarkdown":"## What this 51.84 MHz MEMS oscillator is for That 51.84 MHz frequency is a common reference for 1000BASE-T Ethernet, video pixel clocks, and FPGA transceiver PLLs – not a general-purpose MCU clock. The Enable/Disable function lets the system shut down the oscillator without removing supply, dropping the disable current to 22 mA max from the 35 mA max active draw. ## AEC-Q100 qualification and temperature grade Rated AEC-Q100, this oscillator is qualified for automotive stress conditions – temperature cycling, ESD, and latch-up per the AEC-Q100 test flow. Frequency stability is held to ±25 ppm over that temperature range, tight enough for a 1000BASE-T clock without a separate VCXO. This part is suitable for new designs and production ramps.","metaTitle":"DSC1121CI2-051.8400T MEMS XO – 51.84 MHz, AEC-Q100, Active","metaDescription":"Microchip DSC1121CI2-051.8400T: 51.84 MHz MEMS XO, CMOS output, ±25 ppm stability, -40 to 85°C, AEC-Q100. 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":"Tape & Reel (TR)","Ratings":"AEC-Q100","Function":"Enable/Disable","Frequency":"51.84 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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/DSC1121CI2-051.8400T/alternatives.json"},"ai":{"faq":[{"question":"Can the DSC1121CI2-051.8400T replace a standard quartz oscillator?","answer":"Yes – the MEMS resonator is pin-compatible with many 6-pin quartz XOs in the same 3.2 x 2.5 mm footprint. The CMOS output and supply range match typical quartz oscillators. The AEC-Q100 rating and better shock/vibration tolerance are the upgrade."},{"question":"What is the output type of the DSC1121CI2-051.8400T?","answer":"CMOS output, single-ended. No LVPECL or LVDS variant – the DSC1121 series uses CMOS for the standard XO line."},{"question":"Is the DSC1121CI2-051.8400T AEC-Q100 qualified?","answer":"Yes, it carries an AEC-Q100 rating, making it suitable for automotive applications where the temperature grade and reliability stress requirements apply."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CI2-051.8400T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CI2-051.8400T 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}}