{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121AI2-163.8400T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121AI2-163.8400T","canonicalUrl":"https://icboms.com/microchip/DSC1121AI2-163.8400T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121AI2-163.8400T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1121 series MEMS XO, 163.84 MHz, CMOS output, ±25 ppm stability, 2.25–3.6 V supply, AEC-Q100, -40 to 85°C, 6-SMD package.","salesMarkdown":"## 163.84 MHz MEMS clock for automotive and industrial The DSC1121AI2-163.8400T is a MEMS-based XO (Standard) delivering a fixed 163.84 MHz CMOS output — a common frequency for Ethernet, SerDes reference clocks, and high-speed ADCs in automotive vision and radar modules. Rated across -40 to 85°C with ±25 ppm frequency stability, it holds timing margin through the full industrial and cabin-temperature range. The 2.25–3.6 V supply rail covers 2.5 V and 3.3 V logic without an external regulator. AEC-Q100 qualification means this part has passed the automotive reliability stress suite — temperature cycling, ESD, latch-up — making it a candidate for under-hood and chassis-domain ECUs where a quartz oscillator's vibration sensitivity would be a concern. ## Active production — no LTB window yet The MEMS resonator construction avoids the quartz supply chain constraints that sometimes hit crystal-based oscillators. The Enable/Disable function lets the system pull the output to high-Z, dropping supply current from 35 mA max to 22 mA max — useful for power-gated domains in automotive body controllers or battery-backed telematics units. ## Package and board-level fit 6-SMD, No Lead Exposed Pad package, 7.00 × 5.00 mm footprint, 0.90 mm seated height — standard 7×5 mm oscillator land pattern, no via-in-pad required. Tape & Reel (TR) delivery for automated pick-and-place. The MEMS base resonator offers better shock and vibration tolerance than a quartz crystal — relevant for engine-mount or transmission-adjacent electronics where mechanical stress can pull a quartz oscillator off frequency.","metaTitle":"DSC1121AI2-163.8400T Microchip 163.84 MHz MEMS XO CMOS","metaDescription":"Active Microchip DSC1121 MEMS oscillator, 163.84 MHz, CMOS output, ±25 ppm stability, AEC-Q100, -40 to 85°C. Sourced per RFQ.","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":"163.84 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.276\\\" L x 0.197\\\" W (7.00mm x 5.00mm)","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the frequency stability of DSC1121AI2-163.8400T?","answer":"±25 ppm across the full -40 to 85°C range. For a 163.84 MHz carrier, that is ±4.1 kHz maximum deviation — tight enough for most Ethernet and SerDes reference applications without external trimming."},{"question":"Can DSC1121AI2-163.8400T run on a 3.3 V supply?","answer":"Yes — the supply range is 2.25 V to 3.6 V, so both 2.5 V and 3.3 V rails work directly. No level shifter needed on the output as long as the receiving logic is 3.3 V or 2.5 V tolerant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121AI2-163.8400T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121AI2-163.8400T 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}}