{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121BM1-040.0000T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121BM1-040.0000T","canonicalUrl":"https://icboms.com/microchip/DSC1121BM1-040.0000T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121BM1-040.0000T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1121 series MEMS XO, 40.0000 MHz, CMOS output, ±50 ppm stability, 6-VDFN package, AEC-Q100 qualified, -55 to +125 °C operating range.","salesMarkdown":"## MEMS oscillator at 40 MHz with CMOS output The DSC1121BM1-040.0000T is a MEMS-based XO (standard oscillator) from Microchip's DSC1121 series, delivering a 40 MHz CMOS output with ±50 ppm frequency stability. ## Temperature grade and automotive qualification AEC-Q100 qualification (Grade 1 implied by the temperature range) means the oscillator passed automotive reliability stress tests: it belongs in under-hood ECUs, chassis controllers, and ADAS sensor modules that see engine-bay heat and vibration. ## Supply range and current draw Operates from 2.25 V to 3.6 V, so it runs on a single 3.3 V or 2.5 V rail without an extra LDO — the wide range also absorbs supply ripple from a switching regulator. Housed in a 6-VDFN package measuring 5.00 mm × 3.20 mm with a seated height of 0.90 mm — a low-profile, surface-mount footprint that matches standard 5×3.2 mm oscillator pads.","metaTitle":"DSC1121BM1-040.0000T MEMS XO, 40 MHz, CMOS, AEC-Q100","metaDescription":"Microchip DSC1121BM1-040.0000T: Active MEMS oscillator, 40 MHz CMOS output, ±50 ppm stability, AEC-Q100, -55 to 125°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":"40 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-VDFN","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":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-55°C ~ 125°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":"Can DSC1121BM1-040.0000T replace a standard 40 MHz quartz oscillator?","answer":"Functionally yes — it outputs a 40 MHz CMOS clock with ±50 ppm stability, which is comparable to many quartz XOs. The MEMS resonator is more shock- and vibration-tolerant than quartz, and the enable/disable pin adds flexibility that a basic quartz oscillator lacks. Pin compatibility depends on the existing footprint; the 6-VDFN package is 5.0×3.2 mm, so confirm the pad layout matches."},{"question":"Does DSC1121BM1-040.0000T have an enable/disable function?","answer":"Yes, the part includes an Enable/Disable pin. When disabled, the output goes high-impedance and supply current drops to 22 mA max (from 35 mA max when enabled). The MEMS resonator and internal PLL remain powered, so the oscillator restarts quickly when re-enabled."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121BM1-040.0000T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121BM1-040.0000T 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}}