{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121AE1-156.2500","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121AE1-156.2500","canonicalUrl":"https://icboms.com/microchip/DSC1121AE1-156.2500","factsUrl":"https://icboms.com/api/mcp/products/DSC1121AE1-156.2500","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121AE1-156.2500, XO (Standard) MEMS oscillator, 156.25 MHz CMOS output, ±50 ppm stability, AEC-Q100 qualified, -20 to 70°C, 2.25-3.6V supply, 6-SMD package.","salesMarkdown":"## 156.25 MHz MEMS clock source for automotive and industrial timing The DSC1121AE1-156.2500 is a MEMS-based XO (Standard) oscillator delivering a 156.25 MHz CMOS output — a common reference frequency for 10 Gigabit Ethernet, PCIe Gen 3, and high-speed serial links. The MEMS resonator eliminates the quartz crystal's cold-start and vibration sensitivity, which matters when the board lives in an engine bay or on a factory floor. It is AEC-Q100 qualified, so the timing tree passes the reliability stress and temperature cycling required for under-hood or chassis-domain automotive ECUs. The -20 to 70°C operating range covers cabin and most industrial ambient conditions. ## Supply voltage flexibility and enable/disable control The supply voltage spans 2.25V to 3.6V, letting it run from a 2.5V or 3.3V rail without an extra LDO. The enable/disable function pulls the output to high-impedance when disabled, reducing current draw to 22 mA max from the 35 mA max active supply current — useful for power-gating the clock tree during sleep modes. ## Package and footprint for PCB layout Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm. The exposed pad on the underside should be soldered to a ground-plane thermal land to keep the oscillator's frequency drift within the ±50 ppm stability spec across temperature.","metaTitle":"DSC1121AE1-156.2500 MEMS Oscillator 156.25 MHz CMOS AEC-Q100","metaDescription":"Microchip DSC1121AE1-156.2500 XO (Standard) MEMS oscillator, 156.25 MHz CMOS output, AEC-Q100 qualified, -20 to 70°C, 2.25-3.6V supply. 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":"Tube","Ratings":"AEC-Q100","Function":"Enable/Disable","Frequency":"156.25 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":"±50ppm","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DSC1121AE1-156.2500 AEC-Q100 qualified?","answer":"Yes, it carries AEC-Q100 ratings, which means it has passed the automotive-grade reliability stress tests including temperature cycling, ESD, and latch-up immunity. It is suitable for deployment in automotive ECUs and other high-reliability environments within its -20 to 70°C temperature range."},{"question":"Does DSC1121AE1-156.2500 have an enable/disable function?","answer":"Yes, the part includes an Enable/Disable function. When disabled, the output goes to high-impedance and the supply current drops to 22 mA max from the 35 mA max active current, allowing power savings in sleep or standby modes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121AE1-156.2500","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121AE1-156.2500 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}}