{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4334Q0023KI2T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4334Q0023KI2T","canonicalUrl":"https://icboms.com/microchip/DSC400-4334Q0023KI2T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4334Q0023KI2T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series MEMS XO, dual-frequency 100 MHz and 156.25 MHz, HCSL and LVDS outputs, ±25 ppm stability, -40°C to 85°C, 20-VFQFN exposed pad, tape and reel","salesMarkdown":"## Dual-frequency MEMS clock source for 100 MHz and 156.25 MHz rails The DSC400-4334Q0023KI2T is a MEMS-based XO (Standard) from Microchip's DSC400 series, delivering two independent output frequencies: 100 MHz on Output 1 and 156.25 MHz on Output 2. Both outputs are available as HCSL or LVDS, selectable per output — HCSL is the typical interface for PCIe reference clocks, while LVDS suits general-purpose high-speed clock distribution. ## Supply voltage flexibility and enable/disable function The supply voltage range spans 2.25 V to 3.6 V, covering 2.5 V and 3.3 V logic rails without an external regulator — a single rail powers both outputs. An Enable/Disable pin allows the outputs to be tri-stated for system-level clock gating or test mode isolation. ## 20-VFQFN package: footprint and thermal design The 20-VFQFN Exposed Pad package measures 5.00 mm x 3.20 mm with a 0.90 mm height — the exposed pad must be soldered to a ground-plane via array to meet the thermal and electrical specifications.","metaTitle":"DSC400-4334Q0023KI2T MEMS XO – 100 MHz & 156.25 MHz","metaDescription":"Microchip DSC400-4334Q0023KI2T dual-frequency MEMS XO: 100 MHz and 156.25 MHz outputs, HCSL/LVDS, ±25 ppm stability, -40°C to 85°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":"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":"-40°C~85°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 is the frequency of DSC400-4334Q0023KI2T?","answer":"This oscillator outputs 100 MHz on Output 1 and 156.25 MHz on Output 2, both selectable as HCSL or LVDS."},{"question":"Does DSC400-4334Q0023KI2T have LVDS output?","answer":"Yes, both outputs can be configured as LVDS or HCSL — the output type is selectable per output."},{"question":"What is the replacement for DSC400-4334Q0023KI2T?","answer":"No official replacement or successor is listed. The DSC400 series is active; if a specific frequency combination is needed, Microchip's DSC400 family includes multiple programmable variants — confirm the exact order code for your application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4334Q0023KI2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4334Q0023KI2T 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}}