{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC400-4334Q0023KI1T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC400-4334Q0023KI1T","canonicalUrl":"https://icboms.com/microchip/DSC400-4334Q0023KI1T","factsUrl":"https://icboms.com/api/mcp/products/DSC400-4334Q0023KI1T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC400 series, XO (Standard) MEMS oscillator, dual outputs 100MHz and 156.25MHz, HCSL/LVDS, ±50ppm stability, -40°C~85°C, 20-VFQFN exposed pad package","salesMarkdown":"## MEMS clock with dual HCSL/LVDS lanes The DSC400-4334Q0023KI1T is a MEMS-based XO (Standard) oscillator from Microchip's DSC400 series, delivering two fixed output frequencies — 100 MHz on output 1 and 156.25 MHz on output 2 — selectable as HCSL or LVDS logic levels. The 156.25 MHz rate is a common SerDes reference for 10GbE and PCIe Gen3; the 100 MHz output can clock a system PLL or FPGA transceiver bank, so a single oscillator serves two clock domains. ## Supply and temperature envelope Operates from a 2.25V to 3.6V supply, covering both 2.5V and 3.3V rails without an intermediate regulator — the wide input range simplifies power-tree design on mixed-voltage boards. Housed in a 20-VFQFN with exposed pad (5.00mm x 3.20mm body, 0.90mm height), the pad needs a thermal via array under the centre slug to pull heat into the ground plane — the datasheet's recommended footprint is worth following closely to keep the MEMS die within its operating junction temperature.","metaTitle":"DSC400-4334Q0023KI1T MEMS XO – 100MHz & 156.25MHz HCSL/LVDS","metaDescription":"Active Microchip DSC400 XO, MEMS resonator, dual outputs 100MHz & 156.25MHz, HCSL/LVDS, ±50ppm, -40°C~85°C, 20-VFQFN. Sourced per RFQ.","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":"±50ppm","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":"How can I order the DSC400-4334Q0023KI1T or check availability?","answer":"This is an active Microchip part sourced through independent distribution. Submit an RFQ with your target quantity and target price; we confirm availability and current pricing at quote time. No stock-holding claim — every order is quoted to order."},{"question":"What output types does the DSC400-4334Q0023KI1T support?","answer":"It supports both HCSL and LVDS outputs, selectable per the application. HCSL is common for PCIe reference clocks; LVDS suits long-board traces and differential clock distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC400-4334Q0023KI1T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC400-4334Q0023KI1T 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}}