{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1124CI5-156.2500T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1124CI5-156.2500T","canonicalUrl":"https://icboms.com/microchip/DSC1124CI5-156.2500T","factsUrl":"https://icboms.com/api/mcp/products/DSC1124CI5-156.2500T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1124 series MEMS-based XO (Standard), 156.2500 MHz, HCSL output, ±10 ppm stability, 2.25 V to 3.6 V supply, -40°C to 85°C, 6-SMD No Lead package, Tape & Reel.","salesMarkdown":"The DSC1124CI5-156.2500T is a MEMS-based oscillator (XO) delivering a 156.25 MHz reference clock with HCSL output, the standard differential signaling for PCIe Gen1/2/3 reference clocks and 10GbE SerDes. Microchip lists the DSC1124CI5-156.2500T as Active. The part ships in Tape & Reel — the 6-SMD No Lead package (3.20 mm × 2.50 mm footprint, 0.90 mm seated height) is a standard MEMS-oscillator land pattern, compatible with existing XO footprints from SiTime, Epson, or IDT. ## Current draw and output drive — what the 42 mA supply current means Maximum supply current is 42 mA at full load. For a 156.25 MHz HCSL output driving a 50-Ω terminated differential pair, this draw is typical — the HCSL swing is 0.7 Vpp into 50 Ω to ground, so the output stage burns about 14 mA per leg. Budget the 42 mA into the 3.3 V rail; it leaves headroom for a second fan-out buffer if needed.","metaTitle":"DSC1124CI5-156.2500T MEMS XO 156.25 MHz HCSL Active","metaDescription":"Microchip DSC1124CI5-156.2500T MEMS XO, 156.25 MHz HCSL output, ±10 ppm stability, -40°C to 85°C, 6-SMD.","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":"±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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/11b93dcf3fe2344432ea2f214a7ea724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy DSC1124CI5-156.2500T and what is the lead time?","answer":"This part is sourced to order through independent distribution. Availability and current lead time are confirmed at RFQ — submit a request against your BOM quantity and target ship date."},{"question":"Is there a pin-compatible alternative to DSC1124CI5-156.2500T?","answer":"No direct second-source or pin-compatible alternative is listed in the Microchip DSC1124 family. The DSC1124 series uses a standard 6-SMD No Lead footprint (3.2×2.5 mm) that matches many MEMS XO footprints from SiTime (SiT912x) or Epson (SG-210STF), but the HCSL output and enable function must be verified against the target device's pinout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1124CI5-156.2500T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1124CI5-156.2500T 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}}