{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1124CI5-156.2422","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1124CI5-156.2422","canonicalUrl":"https://icboms.com/microchip/DSC1124CI5-156.2422","factsUrl":"https://icboms.com/api/mcp/products/DSC1124CI5-156.2422","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1124 series XO (Standard), MEMS resonator, 156.2422 MHz, HCSL output, ±10 ppm stability, 2.25V~3.6V supply, -40°C~85°C, 6-SMD No Lead.","salesMarkdown":"## 156.2422 MHz HCSL clock for high-speed serial links The DSC1124CI5-156.2422: The HCSL swing (typically 700-900 mV peak-to-peak into 50 Ω to ground) is a differential pair that keeps common-mode noise off the reference trace, which matters when the clock fans out to multiple PLLs on a dense board. The ±10 ppm frequency stability holds the long-term drift tight enough for most Ethernet and PCIe Gen1/2/3 applications without a separate VCXO or PLL cleanup loop. ## MEMS resonator vs quartz — the reliability trade-off The base resonator is MEMS, not a quartz crystal. MEMS oscillators survive higher mechanical shock (typically 50,000 g vs 1,000-2,000 g for quartz) and have no start-up reliability issues from crystal aging or drive-level sensitivity. For a board that sees vibration — a fan-cooled chassis, a telecom outdoor enclosure, or a portable instrument dropped during handling — the MEMS construction eliminates the crystal's failure mode of cracked blank or activity dips over temperature. On a board with eight such clocks, that saves 160 mA during sleep states without a separate clock buffer with OE.","metaTitle":"Microchip DSC1124CI5-156.2422 XO, 156.2422 MHz, HCSL","metaDescription":"Microchip DSC1124CI5-156.2422 MEMS XO, 156.2422 MHz HCSL output, ±10 ppm stability, 2.25V-3.6V, -40°C to 85°C. Active production, sourced 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":"156.2422 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":"±10ppm","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":"$4.1700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/11b93dcf3fe2344432ea2f214a7ea724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output type of DSC1124CI5-156.2422?","answer":"The output is HCSL (High-Speed Current Steering Logic), the differential clock standard used for PCI Express and 10GbE reference clocks. The swing is typically 700-900 mV peak-to-peak into a 50 Ω load to ground."},{"question":"What is the frequency stability of DSC1124CI5-156.2422?","answer":"This is sufficient for PCIe Gen1/2/3 and most Ethernet PHY reference clock requirements."},{"question":"Is DSC1124CI5-156.2422 RoHS compliant?","answer":"The part is from Microchip's DSC1124 series which is manufactured RoHS-compliant and lead-free per the standard 6-SMD, No Lead package construction. No separate RoHS certificate is needed for BOM compliance in EU or California markets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1124CI5-156.2422","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1124CI5-156.2422 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}}