{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0344Q0051KE1T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0344Q0051KE1T","canonicalUrl":"https://icboms.com/microchip/DSC400-0344Q0051KE1T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0344Q0051KE1T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series, XO (Standard), MEMS base resonator, quad-frequency outputs: 100 MHz, 156.25 MHz, 156.25 MHz, HCSL/LVDS selectable, ±50 ppm stability, -20 to 70 °C, 20-VFQFN exposed pad, tape & reel.","salesMarkdown":"## MEMS XO with quad-frequency plan for multi-rate clock trees The DSC400-0344Q0051KE1T: Each output can be independently configured as HCSL or LVDS, making this oscillator a single-component clock source for FPGA banks that need both a 100 MHz reference and 156.25 MHz for 10G Ethernet or PCIe Gen3 SerDes. Operating from 2.25 V to 3.6 V, the oscillator runs off a common 2.5 V or 3.3 V rail without an extra LDO — the wide tolerance covers the output ripple of a typical switching regulator. The -20 to 70 °C commercial temperature grade suits indoor telecom racks, office networking gear, and test equipment. For outdoor or engine-bay environments, the DSC400 family offers industrial-temp variants; this specific order code is not rated beyond 70 °C. The 20-VFQFN exposed-pad package measures 5.00 mm × 3.20 mm with a 0.90 mm seated height.","metaTitle":"DSC400-0344Q0051KE1T MEMS XO – 100 MHz / 156.25 MHz HCSL","metaDescription":"Microchip DSC400-0344Q0051KE1T: MEMS XO, 100 MHz + 156.25 MHz × 2, HCSL/LVDS, ±50 ppm, -20 to 70 °C, 20-VFQFN. Active production.","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, LVDS","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":"156.25MHz","Frequency - Output 4":"-","Operating Temperature":"-20°C~70°C","Current - Supply (Max)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b1fa89bbb593bb9f15bbf883a84023ea.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the DSC400-0344Q0051KE1T a direct replacement for a standard 100 MHz LVDS oscillator?","answer":"Yes, for the 100 MHz output lane it can replace a single-output 100 MHz LVDS XO, but the DSC400-0344Q0051KE1T is a quad-output device with three additional frequencies (two at 156.25 MHz). The 20-VFQFN package and the enable/disable function are not pin-compatible with a standard 4-pin 7×5 mm oscillator — a board layout change is required."},{"question":"What is the closest pin-compatible alternative to the DSC400-0344Q0051KE1T in the DSC400 family?","answer":"The DSC400 family shares the same 20-VFQFN footprint and supply range. Any other DSC400 order code with the same package and pinout is a direct mechanical replacement, but the output frequencies and stability grade differ. Check the base product number and the full order code for the specific frequency plan."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0344Q0051KE1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0344Q0051KE1T 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}}