{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4334Q0023KE2","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4334Q0023KE2","canonicalUrl":"https://icboms.com/microchip/DSC400-4334Q0023KE2","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4334Q0023KE2","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO, dual output: 100 MHz and 156.25 MHz, HCSL/LVDS selectable, ±25 ppm stability, 2.25V–3.6V supply, 20-VFQFN package, -20°C to 70°C.","salesMarkdown":"## Active production, dual-frequency MEMS clock source The DSC400-4334Q0023KE2 is an active-production MEMS-based XO from Microchip's DSC400 series, delivering two independent output frequencies from a single 20-VFQFN package: 100 MHz on output 1 and 156.25 MHz on output 2. Output logic is field-selectable between HCSL and LVDS, covering common reference-clock standards for Ethernet PHYs, PCIe, and FPGA transceivers without needing a separate level translator. The MEMS resonator eliminates quartz start-up delays and is less sensitive to vibration and shock, which matters for equipment that ships assembled or sees mechanical handling during installation. ## Supply voltage and temperature grade — fit for indoor equipment Operating from a 2.25V to 3.6V supply rail, the part drops into 2.5V or 3.3V clock trees without an extra regulator — the wide input range covers both common logic voltages. It is not qualified for engine-bay or outdoor enclosure use without additional thermal analysis. ## Package and footprint — 20-VFQFN with exposed pad Housed in a 20-VFQFN with exposed pad, the package measures 5.00 mm x 3.20 mm with a 0.90 mm seated height — the pad must be soldered to a thermal land on the PCB to achieve the rated thermal performance, and the 0.50 mm pitch QFN demands careful fan-out on a 2-layer board. ## Lifecycle and sourcing — active, quoted to order","metaTitle":"DSC400-4334Q0023KE2 MEMS XO – 100 MHz & 156.25 MHz","metaDescription":"Microchip DSC400-4334Q0023KE2 dual-output MEMS XO: 100 MHz and 156.25 MHz, HCSL/LVDS, ±25 ppm stability, -20°C to 70°C, 20-VFQFN.","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":"±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 are the two output frequencies of the DSC400-4334Q0023KE2?","answer":"Output 1 is 100 MHz and output 2 is 156.25 MHz. Both are fixed at the factory — the part is not field-programmable for other frequencies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4334Q0023KE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4334Q0023KE2 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}}