{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1122CI5-047.9980","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1122CI5-047.9980","canonicalUrl":"https://icboms.com/microchip/DSC1122CI5-047.9980","factsUrl":"https://icboms.com/api/mcp/products/DSC1122CI5-047.9980","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1122CI5-047.9980, XO (Standard), MEMS resonator, LVPECL output, 47.998 MHz, ±10 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 6-SMD No Lead package.","salesMarkdown":"## MEMS oscillator at 47.998 MHz — why the exact frequency matters The DSC1122CI5-047.9980 is a MEMS-based XO (Standard) from Microchip's DSC1122 series, delivering a LVPECL output at 47.998 MHz. That frequency is not a standard multiple of a common crystal — it is likely a reference clock for a specific SERDES, Ethernet PHY, or FPGA transceiver that requires a precise non-standard rate. Using a quartz oscillator at this frequency would need a custom crystal, which adds lead time and cost; the MEMS approach avoids that entirely. ## Supply voltage and output — matching the rail and the receiver The supply voltage range spans 2.25V to 3.6V, so the oscillator runs directly from a 2.5V or 3.3V rail without an extra LDO. The LVPECL output is a differential signal that requires a 50-ohm termination to Vcc-2V at the receiver — a standard termination for high-speed clocks. If the downstream device expects LVDS or HCSL, a level translator or AC-coupling with bias resistors is needed; LVPECL is not directly compatible. ## Industrial temperature grade and tight stability ## Enable/Disable function and power savings ## Package footprint and board layout The 6-SMD, No Lead package measures 3.20mm x 2.50mm with a seated height of 0.90mm — a compact footprint that fits dense PCB layouts. The no-lead construction eliminates bent-pin issues during assembly and reflow. The pad layout follows the standard 6-pin MEMS oscillator land pattern; verify the pin 1 orientation for the enable function.","metaTitle":"DSC1122CI5-047.9980 MEMS XO, LVPECL, 47.998 MHz, Active","metaDescription":"Microchip DSC1122CI5-047.9980 MEMS XO, LVPECL output, 47.998 MHz, ±10 ppm stability, -40°C to 85°C, 6-SMD. Active production. Quoted to order.","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":"47.998 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead","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","Base Product Number":"DSC1122","Frequency Stability":"±10ppm","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":"Does DSC1122CI5-047.9980 have an enable/disable function?","answer":"Yes, the part includes an Enable/Disable function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1122CI5-047.9980","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1122CI5-047.9980 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}}