{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-0202Q0106KE2","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-0202Q0106KE2","canonicalUrl":"https://icboms.com/microchip/DSC400-0202Q0106KE2","factsUrl":"https://icboms.com/api/mcp/products/DSC400-0202Q0106KE2","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO (Standard), dual LVPECL outputs at 153.6 MHz and 155.46875 MHz, ±25 ppm stability, 2.25 V to 3.6 V supply, 20-VFQFN exposed-pad package, -20°C to +70°C.","salesMarkdown":"## Dual LVPECL outputs for networking clock trees The DSC400-0202Q0106KE2 is a dual-output MEMS-based XO delivering 153.6 MHz on output 1 and 155.46875 MHz on output 2, both LVPECL logic levels — a common pairing for 1GbE and SONET/SDH line cards where the MAC and PHY require separate reference clocks at slightly different rates. Frequency stability is ±25 ppm over the -20°C to +70°C commercial temperature range, which keeps the bit-error rate within spec for most 1.25 Gbaud serial links without needing a TCXO. The supply range spans 2.25 V to 3.6 V, so it runs directly off a 2.5 V or 3.3 V rail without an intermediate regulator — one less BOM line for the power tree. ## MEMS resonator advantage over quartz MEMS oscillators typically have shorter factory lead times than quartz-based XOs because the resonator is fabricated in a standard CMOS-like process rather than requiring quartz blank cutting and tuning. The 20-VFQFN exposed-pad package (5.00 mm x 3.20 mm, 0.90 mm height) requires a thermal pad on the PCB for both heat sinking and mechanical stability — the exposed paddle should be connected to the ground plane with multiple vias to keep the junction temperature within the -20°C to +70°C operating range.","metaTitle":"DSC400-0202Q0106KE2 MEMS XO – 153.6/155.46875 MHz LVPECL","metaDescription":"Microchip DSC400-0202Q0106KE2 dual-output MEMS XO: 153.6 MHz & 155.46875 MHz LVPECL, ±25 ppm stability, 2.25-3.6 V supply. Active production.","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":"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":"153.6MHz","Frequency - Output 2":"155.46875MHz","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/53bec600993e140a8d5846badec97a0b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the DSC400-0202Q0106KE2 support 3.3 V operation?","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 within spec without an external regulator."},{"question":"What is the closest alternative to the DSC400-0202Q0106KE2?","answer":"No direct pin-compatible replacement is listed from Microchip for this exact dual-frequency pair (153.6 MHz + 155.46875 MHz). A functionally equivalent MEMS XO would need to match the LVPECL output, ±25 ppm stability, 2.25-3.6 V supply, and the same 20-VFQFN footprint. Confirm the frequency pair against your PHY/MAC requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-0202Q0106KE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-0202Q0106KE2 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}}