{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0202Q0108KE2T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0202Q0108KE2T","canonicalUrl":"https://icboms.com/microchip/DSC400-0202Q0108KE2T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0202Q0108KE2T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO, standard type, LVPECL output, dual frequencies 167.1875 MHz and 173.28125 MHz, ±25 ppm stability, 2.25-3.6 V supply, -20°C to 70°C, 20-VFQFN exposed pad package, tape and reel.","salesMarkdown":"## MEMS oscillator with dual LVPECL clock outputs The DSC400-0202Q0108KE2T is a MEMS-based XO (standard oscillator) from Microchip's DSC400 series, delivering two independent LVPECL outputs at 167.1875 MHz and 173.28125 MHz from a single 20-VFQFN package. LVPECL output logic provides the low-jitter, differential signalling needed for high-speed SerDes, FPGA reference clocks, and 10G Ethernet PHY reference inputs — the 0.9V typical swing and 50-ohm back-termination simplify AC-coupling to the receiver. ## Supply voltage and temperature fit Supply range spans 2.25 V to 3.6 V, covering both 2.5 V and 3.3 V logic rails without an intermediate LDO — one BOM line serves either rail. If the BOM calls for -40°C operation, this is not the right variant. ## 20-VFQFN package and board layout The 20-VFQFN exposed pad package measures 5.00 mm x 3.20 mm with a 0.90 mm seated height — a compact footprint for dense PCB layouts. If a cross-reference is needed, the functional equivalent is another MEMS XO in the same package with LVPECL outputs and matching frequency stability.","metaTitle":"DSC400-0202Q0108KE2T MEMS XO – LVPECL, Dual Freq, 20-VFQFN","metaDescription":"DSC400-0202Q0108KE2T: MEMS XO (Standard), LVPECL output, 167.1875/173.28125 MHz, ±25 ppm, 2.25-3.6V, -20°C~70°C, 20-VFQFN. Active production. Quoted to order.","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":"LVPECL","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":"167.1875MHz","Frequency - Output 2":"173.28125MHz","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/04fb9d0cee1ca09937ed5821e725618f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does DSC400-0202Q0108KE2T operate at 3.3V?","answer":"Yes. The supply voltage range is 2.25 V to 3.6 V, so both 3.3 V and 2.5 V rails are supported without an external regulator."},{"question":"What is the output logic of DSC400-0202Q0108KE2T?","answer":"LVPECL (Low-Voltage Positive Emitter-Coupled Logic) — a differential output with typical 0.9V swing, 50-ohm back-termination, and DC bias of Vcc - 1.3V. AC-couple to the receiver unless the receiver's common-mode range matches."},{"question":"Can DSC400-0202Q0108KE2T replace a standard quartz oscillator of the same frequency?","answer":"Functionally yes, if the quartz oscillator also has LVPECL output and the same supply voltage. The MEMS resonator eliminates quartz aging and offers better shock/vibration tolerance. However, the pinout and footprint of the 20-VFQFN package may differ from a legacy quartz XO — verify the PCB layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0202Q0108KE2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0202Q0108KE2T 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}}