{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0344Q0051KI1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0344Q0051KI1","canonicalUrl":"https://icboms.com/microchip/DSC400-0344Q0051KI1","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0344Q0051KI1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series, XO (Standard) MEMS oscillator, 100 MHz / 156.25 MHz / 156.25 MHz outputs, HCSL, LVDS, ±50 ppm stability, -40°C to 85°C, 20-VFQFN exposed pad, tube","salesMarkdown":"## Three-output MEMS XO for multi-frequency clock trees The DSC400-0344Q0051KI1 is a MEMS-based XO (Standard) from Microchip's DSC400 series, delivering three output frequencies: 100 MHz on output 1 and 156.25 MHz on outputs 2 and 3. This lets a single oscillator replace two or three discrete XOs on a board carrying a 100 MHz reference and dual 156.25 MHz clocks for Ethernet or FPGA transceivers. Outputs are configurable as HCSL or LVDS, covering the two most common differential signalling standards for high-speed clock distribution. The ±50 ppm frequency stability over the -40°C to 85°C industrial temperature range keeps jitter within the timing budget for 10 GbE and PCIe Gen 3 applications. ## Supply voltage and package fit for dense PCB layouts Wide supply range of 2.25 V to 3.6 V means the oscillator can run from a 2.5 V or 3.3 V rail without a dedicated LDO. The 20-VFQFN exposed pad package (5.00 mm x 3.20 mm, 0.90 mm height) requires a thermal via pattern under the paddle for heat sinking — the pad is electrically connected to ground and should be soldered to a copper plane for rated thermal performance. The DSC400 series is a current design-in family, so the BOM line is not at risk of sudden discontinuation.","metaTitle":"DSC400-0344Q0051KI1 MEMS XO – 100 MHz & 156.25 MHz","metaDescription":"Microchip DSC400-0344Q0051KI1 MEMS XO: 100 MHz + dual 156.25 MHz outputs, HCSL/LVDS, ±50 ppm, -40°C to 85°C, 20-VFQFN. Active production. Request quote.","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":"Tube","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":"-40°C~85°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":"What are the output frequencies of the DSC400-0344Q0051KI1?","answer":"Output 1 is 100 MHz; outputs 2 and 3 are each 156.25 MHz. All three are differential (HCSL or LVDS selectable)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0344Q0051KI1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0344Q0051KI1 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}}