{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121CI2-055.0000T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121CI2-055.0000T","canonicalUrl":"https://icboms.com/microchip/DSC1121CI2-055.0000T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121CI2-055.0000T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121CI2-055.0000T, XO (Standard) MEMS oscillator, 55 MHz CMOS output, ±25 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 6-VDFN package","salesMarkdown":"## 55 MHz fixed-frequency clock — MEMS resonator, not quartz The DSC1121CI2-055.0000T is a 55 MHz fixed-frequency XO built around a MEMS resonator rather than a quartz crystal — the MEMS die is sealed at wafer level, which eliminates the quartz start-up uncertainty and reduces sensitivity to board-level vibration and shock. The Enable/Disable function (pin 1 on the 6-VDFN package) lets the system gate the clock for power savings — when disabled the supply current drops to 22 mA max, enough to keep the internal bias alive but stop the output. The 2.25V to 3.6V supply range spans both 2.5V and 3.3V logic rails without a separate regulator — a single DSC1121CI2-055.0000T serves a mixed-voltage board where the FPGA core runs 2.5V and the I/O bank runs 3.3V. ## Package and footprint — 6-VDFN, 3.2 mm × 2.5 mm","metaTitle":"DSC1121CI2-055.0000T Microchip MEMS XO 55 MHz CMOS ±25 ppm","metaDescription":"DSC1121CI2-055.0000T from Microchip Technology: MEMS-based XO, 55 MHz CMOS output, ±25 ppm stability, 2.25-3.6V supply, industrial temp -40°C to 85°C, 6-VDFN","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":"55 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","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 DSC1121CI2-055.0000T?","answer":"This includes the combined effects of temperature, supply voltage variation, and aging."},{"question":"Is DSC1121CI2-055.0000T RoHS compliant?","answer":"The DSC1121 series from Microchip is manufactured RoHS-compliant and lead-free. The 6-VDFN package uses a matte-tin plating on the leads, compatible with standard lead-free reflow profiles."},{"question":"What are alternatives to DSC1121CI2-055.0000T?","answer":"Within the DSC1121 series, the same package and pinout is available at other fixed frequencies — the DSC1121CI2-050.0000T (50 MHz) and DSC1121CI2-060.0000T (60 MHz) share the same 6-VDFN footprint, supply range, and ±25 ppm stability. For a wider stability spec, the DSC1121 series also offers ±10 ppm and ±50 ppm variants in the same package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121CI2-055.0000T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121CI2-055.0000T 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}}