{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1122AI2-155.5200T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1122AI2-155.5200T","canonicalUrl":"https://icboms.com/microchip/DSC1122AI2-155.5200T","factsUrl":"https://icboms.com/api/mcp/products/DSC1122AI2-155.5200T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1122 series MEMS XO, 155.52 MHz, LVPECL output, ±25 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 6-SMD no-lead exposed pad package, tape & reel.","salesMarkdown":"## 155.52 MHz LVPECL MEMS oscillator for high-speed clock trees The DSC1122AI2-155.5200T is a MEMS-based XO delivering a 155.52 MHz LVPECL output — a common reference frequency for 10GbE, Fibre Channel, and SONET/SDH line cards. The LVPECL differential pair drives 50-ohm terminated traces directly, saving a fanout buffer in the clock distribution path. Supply voltage spans 2.25V to 3.6V, so the same BOM line works across 2.5V and 3.3V clock domains without a rail-specific variant. Microchip lists the DSC1122AI2-155.5200T as Active. ## MEMS resonator vs quartz — what changes on the board That means no startup-time uncertainty at cold — the oscillator reaches rated frequency within microseconds of power-up. The 6-SMD no-lead exposed pad package is the same 7.0 mm × 5.0 mm footprint used by many quartz oscillators, so a layout designed for a standard 7×5 mm XO accepts this part without a board spin.","metaTitle":"DSC1122AI2-155.5200T MEMS XO 155.52 MHz LVPECL - Microchip","metaDescription":"DSC1122AI2-155.5200T MEMS oscillator, 155.52 MHz LVPECL output, ±25 ppm stability, -40°C to 85°C, 6-SMD.","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":"Tape & Reel (TR)","Ratings":"-","Function":"Enable/Disable","Frequency":"155.52 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":"±25ppm","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":"Can the DSC1122AI2-155.5200T replace a quartz oscillator at the same frequency and package?","answer":"Yes — the 7.0 mm × 5.0 mm 6-SMD no-lead exposed pad footprint matches the industry-standard 7×5 mm quartz XO footprint. The MEMS resonator eliminates the quartz crystal's startup delay and is less sensitive to vibration and board flex. The LVPECL output is identical to a quartz LVPECL oscillator, so the downstream receiver sees the same signal levels."},{"question":"What is the enable/disable function on the DSC1122AI2-155.5200T?","answer":"The part has an Enable/Disable function. When disabled, the supply current drops to 22 mA max from the 58 mA max active draw. The output goes into a high-impedance state, which lets you gate the clock to a downstream device without a separate clock buffer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1122AI2-155.5200T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1122AI2-155.5200T 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}}