{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC8124AI5T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC8124AI5T","canonicalUrl":"https://icboms.com/microchip/DSC8124AI5T","factsUrl":"https://icboms.com/api/mcp/products/DSC8124AI5T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC8124 series MEMS XO (Standard), HCSL output, 6-SMD No Lead 7.00mm x 5.00mm, ±10 ppm stability, 2.25V~3.6V supply, AEC-Q100, Tape & Reel.","salesMarkdown":"## MEMS resonator, HCSL output, 7×5 mm footprint The DSC8124AI5T is a MEMS-based standard XO (Standard) with an HCSL output stage, covering a 10 MHz to 460 MHz frequency range. The HCSL (High-Speed Current Steering Logic) output delivers a differential pair with a typical 0.7 V swing, terminated 50 Ω to ground on each leg — the standard reference clock for PCIe Gen1 through Gen4 interfaces. The six pads map to OE (pin 1), GND, output, complementary output, VDD, and NC — a layout shared with many quartz and MEMS oscillators, so a board designed for a 7×5 XO accepts this part without a layout change. ## ±10 ppm total stability, AEC-Q100 qualified For a 100 MHz reference clock, ±10 ppm translates to ±1 kHz absolute frequency error — tight enough for a 10 GbE SerDes PLL that requires a reference within ±100 ppm. Maximum supply current is 42 mA; disabling the output (OE pin low) drops the current to 22 mA max while keeping the MEMS core and PLL running for instant restart. The wide supply range also means the part tolerates a 3.3 V rail that droops to 2.5 V during a transient without losing lock. ## Active production, blank-programmable frequency The device ships as a blank (user must program) unit; the target frequency is written using Microchip's TimeFlash programmer or a compatible production programmer. This is a factory-programmed part in the field, not a field-programmable oscillator in the traditional sense — the programming step sets the PLL divider and output format, and the part then behaves as a fixed-frequency oscillator.","metaTitle":"Microchip DSC8124AI5T MEMS XO, HCSL, ±10 ppm, 7×5 mm","metaDescription":"Microchip DSC8124AI5T MEMS-based XO, HCSL output, ±10 ppm stability, 10–460 MHz, AEC-Q100, 2.25–3.6 V supply. 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":"DSC8124","Package":"Tape & Reel (TR)","Ratings":"AEC-Q100","Function":"Enable/Disable","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.276\\\" L x 0.197\\\" W (7.00mm x 5.00mm)","Voltage - Supply":"2.25V ~ 3.6V","Programmable Type":"Blank (User Must Program)","Base Product Number":"DSC8124","Frequency Stability":"±10ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"42mA","Available Frequency Range":"10 MHz ~ 460 MHz","Spread Spectrum Bandwidth":"-","Frequency Stability (Total)":"-","Current - Supply (Disable) (Max)":"22 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b114477e2ae1e9c8bbb9420182bdf8b9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the DSC8124AI5T's output type and what is it used for?","answer":"The output is HCSL (High-Speed Current Steering Logic), a differential pair with a typical 0.7 V swing terminated 50 Ω to ground on each leg. HCSL is the standard reference clock for PCIe interfaces (Gen1 through Gen4) and is also used in Ethernet PHYs, FPGAs, and SerDes transceivers that require a low-jitter differential clock."},{"question":"What compliance documentation does Microchip provide for the DSC8124AI5T?","answer":"Microchip provides a datasheet with electrical specifications, a product change notification (PCN) history, and a material declaration (RoHS/REACH) for the DSC8124 series. The AEC-Q100 qualification document is available on request through the Microchip quality portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC8124AI5T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC8124AI5T 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}}