{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1124CI1-156.2500","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1124CI1-156.2500","canonicalUrl":"https://icboms.com/microchip/DSC1124CI1-156.2500","factsUrl":"https://icboms.com/api/mcp/products/DSC1124CI1-156.2500","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1124CI1-156.2500, XO (Standard) MEMS oscillator, 156.25 MHz HCSL output, 2.25V–3.6V supply, -40°C to 85°C, 6-SMD no-lead package, ±50ppm stability.","salesMarkdown":"## 156.25 MHz HCSL clock for PCIe and serial links The DSC1124CI1-156.2500 is a MEMS-based XO (Standard) oscillator delivering a 156.25 MHz HCSL output — the exact frequency and logic family used for PCIe Gen1/2/3 reference clocks and many 10GbE serial interfaces. HCSL (High-Speed Current Steering Logic) provides the low-jitter, differential swing that PCIe root complexes and switches expect, with a typical output swing of 700 mV peak-to-peak into a 50-ohm termination to ground. The supply voltage range spans 2.25V to 3.6V, covering both 2.5V and 3.3V rails without an external LDO. Housed in a 6-SMD no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm — a standard 3.2x2.5 mm footprint that matches many quartz oscillators, though the MEMS die inside is smaller. The enable/disable function is on pin 1; leave it high or float for normal operation, pull low to tri-state the output.","metaTitle":"DSC1124CI1-156.2500 MEMS Oscillator 156.25 MHz HCSL Active","metaDescription":"Microchip DSC1124CI1-156.2500 XO (Standard) MEMS oscillator, 156.25 MHz HCSL output, 2.25V-3.6V supply, -40°C to 85°C, 6-SMD. 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)","Output":"HCSL","Series":"DSC1124","Package":"Tube","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":"±50ppm","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":"$2.2600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/11b93dcf3fe2344432ea2f214a7ea724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DSC1124CI1-156.2500 active or obsolete?","answer":"Active — Microchip lists it as current production with no EOL notice. It is available for new designs and ongoing builds. Sourced per RFQ."},{"question":"Can I use DSC1124CI1-156.2500 as a drop-in replacement for a standard quartz oscillator?","answer":"The 3.2x2.5 mm 6-SMD footprint matches many quartz oscillators, but the output is HCSL — not LVCMOS or LVDS. Verify that the downstream receiver accepts HCSL levels and common-mode voltage before substituting. The MEMS resonator also has faster startup and better shock tolerance than quartz."},{"question":"What is the output type of DSC1124CI1-156.2500?","answer":"HCSL (High-Speed Current Steering Logic), the differential standard used for PCIe reference clocks."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1124CI1-156.2500","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1124CI1-156.2500 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}}