{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC8124CI5","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC8124CI5","canonicalUrl":"https://icboms.com/microchip/DSC8124CI5","factsUrl":"https://icboms.com/api/mcp/products/DSC8124CI5","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC8124 series, MEMS XO (Standard), HCSL output, 10 MHz ~ 460 MHz, ±10 ppm stability, 6-SMD No Lead, Tube.","salesMarkdown":"## MEMS-based HCSL clock source for high-speed serial interfaces The DSC8124CI5: The HCSL signaling standard is the typical reference clock for PCIe Gen1/2/3, Ethernet SERDES, and FPGA transceiver banks — the 0.7 V swing and common-mode voltage are set by the output stage, so the receiver termination (50 Ω to ground per line) must match the HCSL specification, not LVDS or LVPECL. This is a blank (user-programmable) device — it ships without a factory-set frequency and requires programming via Microchip's TimeFlash or a compatible programmer before placement. The available frequency range covers common PCIe reference clocks (100 MHz, 125 MHz) and Ethernet SERDES rates, making it a flexible BOM line for multi-rate designs. ## ±10 ppm stability and industrial temperature grade This tighter-than-typical stability (±25 ppm or ±50 ppm is common for general-purpose oscillators) matters for precision timing in networking equipment, test instrumentation, and motor-drive control loops where accumulated jitter or frequency drift can push the link margin below the receiver's lock threshold. Maximum supply current is 42 mA — typical for a MEMS HCSL oscillator running at higher output frequencies — so budget this into the 3.3 V rail's total current draw during power-tree design. ## 6-SMD No Lead footprint and enable/disable function The footprint is compatible with standard 3.2 mm x 2.5 mm oscillator land patterns — no board spin needed if migrating from a quartz XO of the same package.","metaTitle":"DSC8124CI5 MEMS XO, HCSL, 10-460 MHz, ±10 ppm, Active","metaDescription":"Microchip DSC8124CI5 MEMS XO, HCSL output, 10 MHz to 460 MHz, ±10 ppm stability, -40 to +85°C. Active production. Sourced per RFQ.","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":"Tube","Ratings":"-","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":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","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":"$4.7300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b114477e2ae1e9c8bbb9420182bdf8b9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the DSC8124CI5 output type and what does HCSL mean for my design?","answer":"The DSC8124CI5 outputs HCSL (High-Speed Current Steering Logic), a differential signaling standard with a 0.7 V swing and a common-mode voltage of roughly 0.35 V. It is the reference clock standard for PCIe Gen1/2/3 and is also common in Ethernet PHY and FPGA transceiver applications. Termination must be 50 Ω to ground on each line — not the 100 Ω differential termination used for LVDS — so the board layout and AC-coupling caps (if used) should follow the HCSL routing guidelines, not LVDS or LVPECL."},{"question":"What frequency range does the DSC8124CI5 support and is it pre-programmed?","answer":"The DSC8124CI5 supports a 10 MHz to 460 MHz frequency range. It ships as a blank (user-programmable) device — the frequency is not factory-set. You must program it using Microchip's TimeFlash programmer or a compatible programming fixture before placing it on the board. This allows a single BOM line to serve multiple frequency variants by programming the same blank part at the time of assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC8124CI5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC8124CI5 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}}