{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121BE2-155.5200T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121BE2-155.5200T","canonicalUrl":"https://icboms.com/microchip/DSC1121BE2-155.5200T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121BE2-155.5200T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1121BE2-155.5200T, MEMS-based XO (Standard), CMOS output, 155.52 MHz, ±25ppm stability, 2.25V–3.6V supply, -20°C to 70°C, 6-SMD package.","salesMarkdown":"## MEMS clock at 155.52 MHz — supply and output fit The DSC1121BE2-155.5200T is a MEMS-based XO (Standard) delivering a 155.52 MHz CMOS output — a common frequency for 10G Ethernet and high-speed serial links. It operates from a single 2.25V to 3.6V supply, meaning it sits comfortably on a 2.5V or 3.3V rail without an external LDO. ## Package and temperature — board-level fit Housed in a 6-SMD, No Lead package measuring 5.00mm x 3.20mm with a seated height of 0.90mm — this is the standard 5x3.2 mm oscillator footprint that drops onto most Ethernet PHY or FPGA clock input layouts without a pad change. No AEC-Q100 qualification here, so it stays out of under-hood or outdoor telecom enclosures. Listed as Active — Microchip continues production with no published EOL.","metaTitle":"DSC1121BE2-155.5200T MEMS XO 155.52 MHz CMOS Microchip","metaDescription":"DSC1121BE2-155.5200T MEMS XO, 155.52 MHz, CMOS output, 2.25V-3.6V supply, ±25ppm stability, -20°C to 70°C, 6-SMD. 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":"-","Function":"Enable/Disable","Frequency":"155.52 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.197\\\" L x 0.126\\\" W (5.00mm x 3.20mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC1121","Frequency Stability":"±25ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-20°C~70°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/DSC1121BE2-155.5200T/alternatives.json"},"ai":{"faq":[{"question":"Is the DSC1121BE2-155.5200T compatible with 3.3V logic?","answer":"Yes — the supply voltage range is 2.25V to 3.6V, so a 3.3V rail is within spec. The CMOS output swings rail-to-rail, so it drives 3.3V logic inputs directly."},{"question":"Can I use this MEMS oscillator as a direct replacement for a quartz oscillator?","answer":"Functionally yes — the DSC1121BE2-155.5200T is a drop-in XO replacement at the same frequency and output type. The MEMS resonator is less sensitive to vibration and has a faster start-up time than a quartz crystal, but the pinout and footprint follow the standard 6-SMD oscillator pattern. Confirm the Enable/Disable logic polarity matches your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121BE2-155.5200T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121BE2-155.5200T 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}}