{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CI2-045.1580T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CI2-045.1580T","canonicalUrl":"https://icboms.com/microchip/DSC1121CI2-045.1580T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CI2-045.1580T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1121 series MEMS XO, 45.158 MHz, CMOS output, 2.25V–3.6V supply, -40°C to 85°C, 6-VDFN package, Enable/Disable function.","salesMarkdown":"## MEMS oscillator replaces quartz in 45.158 MHz clock line The DSC1121CI2-045.1580T is a MEMS-based XO (Standard) that outputs a 45.158 MHz CMOS clock from a 2.25V to 3.6V supply rail — no external load capacitors needed, unlike a quartz resonator. ## Industrial temperature grade and footprint The 6-VDFN package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm — a compact footprint that fits dense PCB layouts without the height clearance issues of a through-hole can.","metaTitle":"DSC1121CI2-045.1580T MEMS XO – Microchip 45.158 MHz CMOS","metaDescription":"Active MEMS XO, 45.158 MHz, CMOS output, 2.25V–3.6V supply, -40°C to 85°C, 6-VDFN package.","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":"45.158 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-VDFN","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":"-","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"35mA","Absolute Pull Range (APR)":"±25ppm","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/DSC1121CI2-045.1580T/alternatives.json"},"ai":{"faq":[{"question":"How can I order the DSC1121CI2-045.1580T or check stock?","answer":"The DSC1121CI2-045.1580T is an active Microchip part. Submit an RFQ with your target quantity; we source through independent distribution and confirm availability and pricing at quote time. No stock-holding claim — every order is quoted to order."},{"question":"Does the DSC1121CI2-045.1580T require external load capacitors?","answer":"No — as a MEMS XO (Standard) with CMOS output, the DSC1121CI2-045.1580T generates a rail-to-rail clock signal directly and does not need the load capacitors that a quartz crystal resonator requires."},{"question":"Can the DSC1121CI2-045.1580T replace a traditional quartz oscillator?","answer":"Yes — the MEMS base resonator makes it a drop-in replacement for a quartz XO in the same 45.158 MHz frequency, same 2.25V–3.6V supply range, and same CMOS output. The 6-VDFN package footprint (3.20 mm x 2.50 mm) must match the PCB land pattern."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CI2-045.1580T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CI2-045.1580T 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}}