{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0344Q0051KI1T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0344Q0051KI1T","canonicalUrl":"https://icboms.com/microchip/DSC400-0344Q0051KI1T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0344Q0051KI1T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO, quad-output programmable oscillator, 100 MHz and 156.25 MHz, HCSL/LVDS, ±50 ppm stability, -40°C to 85°C, 20-VFQFN exposed pad, tape & reel.","salesMarkdown":"## MEMS clock with quad-output flexibility The DSC400-0344Q0051KI1T is a MEMS-based XO (Standard) from Microchip's DSC400 series, delivering four independent clock outputs: one at 100 MHz and three at 156.25 MHz, selectable between HCSL and LVDS logic levels. With ±50 ppm frequency stability across the full -40°C to 85°C industrial range, this oscillator holds timing margin for 10GBASE-KR, PCIe Gen 3, or FPGA reference clock trees without external temperature compensation. ## Supply rail and package fit Operating from 2.25 V to 3.6 V, the DSC400-0344Q0051KI1T runs directly off a 2.5 V or 3.3 V rail without a separate LDO — the wide input range absorbs ±10 % supply tolerance typical of unregulated intermediate buses. Housed in a 20-VFQFN with exposed pad (5.00 mm × 3.20 mm, 0.90 mm height), the package requires a thermal via array under the pad for adequate heat transfer to the ground plane — a four-layer board with a solid copper pour under the pad keeps the junction temperature within the -40°C to 85°C operating envelope.","metaTitle":"DSC400-0344Q0051KI1T MEMS XO – 100 MHz & 156.25 MHz","metaDescription":"Microchip DSC400-0344Q0051KI1T MEMS XO, quad-output: 100 MHz & 156.25 MHz, 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":"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":"-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":"Can I use DSC400-0344Q0051KI1T as a drop-in replacement for other 100 MHz MEMS oscillators?","answer":"Pin compatibility depends on the specific oscillator's footprint and output type. The DSC400 uses a 20-VFQFN package with exposed pad and offers HCSL or LVDS outputs. A direct replacement requires matching the supply voltage range (2.25 V to 3.6 V), frequency stability (±50 ppm), and enable/disable logic. Verify the target oscillator's pinout and output standard before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0344Q0051KI1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0344Q0051KI1T 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}}