{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1124CI2-156.2500","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1124CI2-156.2500","canonicalUrl":"https://icboms.com/microchip/DSC1124CI2-156.2500","factsUrl":"https://icboms.com/api/mcp/products/DSC1124CI2-156.2500","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1124 series XO (Standard), 156.2500 MHz, HCSL output, MEMS resonator, 6-SMD no-lead, 3.20mm x 2.50mm, tube.","salesMarkdown":"## 156.25 MHz fixed-frequency XO — the PCIe and 10GbE reference clock The Microchip DSC1124CI2-156.2500 is a fixed-frequency XO (Standard) delivering 156.25 MHz with HCSL output, the differential clock standard for PCIe Gen1/2/3 reference and 10GbE SerDes PLLs. The HCSL swing (0.7V peak-to-peak into 50 ohms to GND) drives the clock tree directly without external translation — no AC-coupling caps needed at the receiver if the DC bias is handled by the termination. ## Supply and output — single-rail HCSL The Enable/Disable pin (pin 1 on the 6-SMD) tri-states the output when pulled low, drawing 22 mA max in disable mode vs 42 mA max when active. That is tight enough for 156.25 MHz in a PCIe Gen3 reference (requires ±300 ppm total) or a 10GbE MAC/PHY clock, but not Stratum 3 — if the design needs holdover or wander specs, a TCXO or OCXO is the next step up. ## Lifecycle and sourcing — active, no EOL pressure In the current allocation environment, 156.25 MHz MEMS oscillators have seen spot premiums on short-dated orders, but this part is not on a constrained fab node.","metaTitle":"Microchip DSC1124CI2-156.2500 XO, 156.25 MHz, HCSL, MEMS","metaDescription":"Active Microchip DSC1124CI2-156.2500 XO, 156.25 MHz HCSL output, ±25 ppm, -40 to 85°C, 6-SMD. MEMS-based, no quartz aging. Quoted to order.","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":"±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":"Does DSC1124CI2-156.2500 support HCSL output?","answer":"Yes — the output is HCSL (High-Speed Current Steering Logic), the differential clock standard for PCIe and 10GbE reference clocks. The 0.7 V swing into 50 Ω to GND drives the receiver directly without external level translation."},{"question":"Is DSC1124CI2-156.2500 RoHS compliant?","answer":"The DSC1124 series is manufactured as RoHS-compliant per Microchip's standard material declaration. The 6-SMD no-lead package contains no restricted substances above the threshold limits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1124CI2-156.2500","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1124CI2-156.2500 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}}