{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4334Q0023KE2T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4334Q0023KE2T","canonicalUrl":"https://icboms.com/microchip/DSC400-4334Q0023KE2T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4334Q0023KE2T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC400 series MEMS XO (Standard), 100 MHz and 156.25 MHz fixed outputs, HCSL/LVDS selectable, ±25 ppm stability, 2.25V–3.6V supply, 20-VFQFN exposed pad package.","salesMarkdown":"## MEMS oscillator with dual reference frequencies The DSC400-4334Q0023KE2T is a MEMS-based XO (Standard) from Microchip's DSC400 series, delivering two fixed output frequencies: 100 MHz and 156.25 MHz — common reference clocks for 1GbE and PCIe Gen1/2 interfaces. Output is selectable between HCSL and LVDS, giving the designer flexibility to drive different clock trees without changing the oscillator footprint. Operates from 2.25 V to 3.6 V, covering common 2.5 V and 3.3 V rails — the wide input range means no additional regulator is needed when the rail sags under load. Housed in a 20-VFQFN with exposed pad, measuring 5.00 mm x 3.20 mm and 0.90 mm tall — the exposed pad must be soldered to a thermal land on the PCB to achieve the rated thermal performance and mechanical stability. ## Lifecycle and sourcing status","metaTitle":"DSC400-4334Q0023KE2T MEMS XO – 100MHz & 156.25MHz HCSL/LVDS","metaDescription":"Active Microchip DSC400 MEMS oscillator, 100 MHz and 156.25 MHz fixed outputs, HCSL/LVDS selectable, ±25 ppm stability, -20 to 70°C. 20-VFQFN package.","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":"±25ppm","Frequency - Output 1":"100MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"-","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/ddbd3c4bac7f1d0d798266c8e96065cf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What output standards does this oscillator support?","answer":"It supports both HCSL and LVDS outputs, selectable via the device configuration. This allows it to drive typical PCIe reference clock inputs (HCSL) or general-purpose high-speed logic (LVDS) from the same part."},{"question":"Can the DSC400-4334Q0023KE2T run on a 2.5 V supply?","answer":"Yes, the supply voltage range is 2.25 V to 3.6 V, so both 2.5 V and 3.3 V rails are within spec. No external regulator is needed if the rail stays within that window."},{"question":"What is the difference between the DSC400 and DSC600 series?","answer":"The DSC400 series (this part) offers dual independent frequency outputs with selectable HCSL/LVDS, while the DSC600 series is a single-output, lower-power MEMS oscillator. The DSC400 targets multi-frequency clock generation; the DSC600 is for single-reference applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4334Q0023KE2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4334Q0023KE2T 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}}