{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC6121CI2A-00APT","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC6121CI2A-00APT","canonicalUrl":"https://icboms.com/microchip/DSC6121CI2A-00APT","factsUrl":"https://icboms.com/api/mcp/products/DSC6121CI2A-00APT","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC61XX series XO (Standard), MEMS base, 4-VDFN package, dual output 19.44MHz & 25MHz, ±25ppm stability, 1.71V~3.63V supply, -40°C~85°C, 3mA typ current.","salesMarkdown":"## What the dual-output and stability spec mean for your clock tree The DSC6121CI2A-00APT: Two frequencies on one die means one oscillator replaces two cans — the 19.44 MHz output typically clocks a SerDes or Ethernet PHY while the 25 MHz output feeds the main SoC or FPGA, saving board space and reducing BOM count. The ±25 ppm stability over temperature and voltage means the oscillator holds its frequency within 25 parts per million of the nominal value — tight enough for most 100BASE-TX and USB clocking without an external PLL cleanup. ## Obsolete — sourcing through independent distribution No pin-compatible drop-in replacement is published by Microchip, so a board spin may be required for a substitute oscillator.","metaTitle":"Microchip DSC6121CI2A-00APT MEMS XO, 19.44MHz & 25MHz","metaDescription":"Microchip DSC6121CI2A-00APT MEMS XO, dual output 19.44MHz & 25MHz, ±25ppm stability, 1.71V-3.63V supply, -40°C to 85°C, 3mA typ. Obsolete — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Height":"0.035\\\" (0.89mm)","Output":"CMOS","Series":"DSC61XX","Package":"Tape & Reel (TR)","Function":"-","Base Resonator":"MEMS","Package / Case":"4-VDFN","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Voltage - Supply":"1.71V ~ 3.63V","Frequency Stability":"±25ppm","Frequency - Output 1":"19.44MHz, 25MHz","Frequency - Output 2":"-","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"3mA (Typ)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/12d996514d53c1ee2501ec6debacbbf1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/DSC6121CI2A-00APT/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC6121CI2A-00APT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC6121CI2A-00APT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-19T21:31:06.077Z","lastPublished":"2026-07-19T21:31:06.077Z","indexable":true}}