{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1124CI2-156.2500T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1124CI2-156.2500T","canonicalUrl":"https://icboms.com/microchip/DSC1124CI2-156.2500T","factsUrl":"https://icboms.com/api/mcp/products/DSC1124CI2-156.2500T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1124CI2-156.2500T, XO (Standard) MEMS oscillator, 156.25 MHz HCSL output, 2.25V–3.6V supply, ±25 ppm stability, -40°C to 85°C, 6-SMD no-lead package.","salesMarkdown":"## 156.25 MHz HCSL reference for high-speed serial buses The DSC1124CI2-156.2500T is a MEMS-based XO (Standard) oscillator delivering a 156.25 MHz HCSL output — the exact frequency and logic level required as a reference clock for PCIe Gen 1/2/3, 10GbE, and other SerDes transceivers. The HCSL (High-Speed Current Steering Logic) output provides the differential swing and common-mode voltage that PCIe root complexes and switches expect, without needing external termination resistors to a separate Vtt rail. ## Supply tolerance and temperature grade for industrial deployment The supply range spans 2.25V to 3.6V — it runs from a nominal 2.5V or 3.3V rail without a separate LDO, and the wide tolerance absorbs ripple from a switching regulator upstream. The MEMS resonator base means no crystal aging drift over the first year; the frequency shift from initial accuracy is dominated by the MEMS die's own stability, not the quartz blank's mechanical creep. ## 6-SMD no-lead package and board layout Housed in a 6-SMD, no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm. The no-lead (QFN-style) footprint requires a solder-paste stencil aperture that matches the exposed pad — the centre pad is the thermal and electrical ground path. A 0.50 mm pitch is typical for this package class; the layout must fan out the six pads to inner layers without via-in-pad unless the PCB fab caps the vias.","metaTitle":"DSC1124CI2-156.2500T MEMS XO – 156.25 MHz HCSL, Active","metaDescription":"Active Microchip DSC1124CI2-156.2500T MEMS oscillator: 156.25 MHz HCSL output, 2.25-3.6V supply, -40°C to 85°C, ±25 ppm stability. 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)","Output":"HCSL","Series":"DSC1124","Package":"Tape & Reel (TR)","Ratings":"-","Function":"Enable/Disable","Frequency":"156.25 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC1124","Frequency Stability":"±25ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"42mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"22mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/11b93dcf3fe2344432ea2f214a7ea724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the DSC1124CI2-156.2500T and how is it quoted?","answer":"The DSC1124CI2-156.2500T is an active Microchip part sourced through independent distribution. No stock-holding claim is made; each order is sourced fresh."},{"question":"What output type does the DSC1124CI2-156.2500T provide?","answer":"It provides an HCSL (High-Speed Current Steering Logic) output. This differential signal is the standard reference clock for PCIe and other high-speed serial interfaces, delivering the required swing and common-mode voltage without external termination to a separate Vtt rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1124CI2-156.2500T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1124CI2-156.2500T 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}}