{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1122AI1-078.1250","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1122AI1-078.1250","canonicalUrl":"https://icboms.com/microchip/DSC1122AI1-078.1250","factsUrl":"https://icboms.com/api/mcp/products/DSC1122AI1-078.1250","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1122AI1-078.1250, XO (Standard) MEMS oscillator, LVPECL output, 78.125 MHz, ±50 ppm stability, 2.25V~3.6V supply, -40°C~85°C, 6-SMD package.","salesMarkdown":"## Why LVPECL at 78.125 MHz matters for your clock tree The DSC1122AI1-078.1250: This MEMS oscillator delivers a LVPECL output at 78.125 MHz — the differential signalling keeps jitter low over board traces longer than a few inches, which is why you see it on 10GbE PHY reference clocks and FPGA transceiver banks. The MEMS resonator means no quartz crystal to crack under vibration; startup is typically under 5 ms, so the PHY locks before the link negotiation completes. The supply voltage spans 2.25V to 3.6V, so it runs from a 3.3V or 2.5V rail without an extra LDO — one less component to qualify. Listed as Active by Microchip. You can design this into a new BOM today and expect multi-year supply without a respin. ## Package and enable/disable for board-level control Housed in a 6-SMD, No Lead Exposed Pad package — 7.00mm x 5.00mm footprint, 0.90mm seated height. On a rework bench, the exposed pad makes hot-air removal straightforward — preheat the board to 120°C, then hit the pad with 280°C airflow until the part lifts clean.","metaTitle":"DSC1122AI1-078.1250 MEMS Oscillator – LVPECL, 78.125 MHz","metaDescription":"Microchip DSC1122AI1-078.1250 XO (Standard) with LVPECL output, 78.125 MHz, ±50 ppm stability, -40°C~85°C. Active lifecycle. RFQ for availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Output":"LVPECL","Series":"DSC1122","Package":"Tube","Ratings":"-","Function":"Enable/Disable","Frequency":"78.125 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":"DSC1122","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"58mA","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/9eb455e34e1b4ad4aed847bfc84d48fa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the DSC1122AI1-078.1250 or check current availability?","answer":"This part is Active and available through our independent distribution channel. Submit an RFQ with your target quantity and lead time preference; we confirm pricing and stock against your BOM line at quote time. No stock-holding claim is made here — availability is confirmed per RFQ."},{"question":"Does the DSC1122AI1-078.1250 have an enable/disable function?","answer":"Yes. When disabled, the output is tri-stated and supply current drops to 22 mA max from 58 mA max."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1122AI1-078.1250","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1122AI1-078.1250 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}}