{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4444Q0023KI1T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4444Q0023KI1T","canonicalUrl":"https://icboms.com/microchip/DSC400-4444Q0023KI1T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4444Q0023KI1T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series XO (Standard) MEMS oscillator, dual output 100 MHz and 156.25 MHz HCSL, ±50 ppm stability, 2.25V~3.6V supply, -40°C~85°C, 20-VFQFN exposed pad, tape and reel.","salesMarkdown":"## MEMS oscillator with dual HCSL outputs for clock tree consolidation The DSC400-4444Q0023KI1T is a MEMS-based XO (Standard) oscillator from Microchip's DSC400 series, delivering two independent HCSL outputs at 100 MHz and 156.25 MHz from a single 20-VFQFN package. This part is typically specified in networking equipment, FPGA reference-clock trees, or PCIe applications where the 100 MHz and 156.25 MHz frequencies cover the main clock domains without a second oscillator. The wide supply range of 2.25V to 3.6V means it can run from a 2.5V or 3.3V rail without an extra regulator — a common scenario on mixed-voltage boards. The 20-VFQFN exposed-pad package (5.00 mm x 3.20 mm, 0.90 mm height) requires a thermal pad on the PCB for heat sinking — the datasheet's recommended land pattern should be followed to avoid solder bridging under the centre pad. ## Lifecycle and sourcing for production and repair","metaTitle":"DSC400-4444Q0023KI1T XO (Standard) MEMS Oscillator -","metaDescription":"Active MEMS XO, 100 MHz & 156.25 MHz HCSL outputs, ±50 ppm stability, -40°C to 85°C, 20-VFQFN. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Height":"0.035\\\" (0.90mm)","Output":"HCSL","Series":"DSC400","Package":"Tape & Reel (TR)","Function":"Enable/Disable","Base Resonator":"MEMS","Package / Case":"20-VFQFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.197\\\" L x 0.126\\\" W (5.00mm x 3.20mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC400","Frequency Stability":"±50ppm","Frequency - Output 1":"100MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/17298f21a67a7945826b04ab2911ec92.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DSC400-4444Q0023KI1T compatible with a 3.3V supply?","answer":"Yes. The supply range is 2.25V to 3.6V, so a 3.3V rail is within spec. The HCSL output levels are defined by the supply voltage, so at 3.3V the swing meets the standard HCSL requirements."},{"question":"What is the difference between DSC400-4444Q0023KI1T and DSC400-4444Q0023KI1?","answer":"The suffix 'T' typically indicates tape-and-reel packaging. The base electrical specifications (frequencies, stability, supply range) are identical between the two order codes. Confirm the packaging format with your distributor at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4444Q0023KI1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4444Q0023KI1T 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}}