{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC2044FE2-H0006T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC2044FE2-H0006T","canonicalUrl":"https://icboms.com/microchip/DSC2044FE2-H0006T","factsUrl":"https://icboms.com/api/mcp/products/DSC2044FE2-H0006T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC2044 series MEMS XO (Standard), dual 156.25 MHz HCSL outputs, ±25 ppm stability, 2.25V–3.6V supply, -20°C–70°C, 14-VFQFN exposed pad, tape & reel.","salesMarkdown":"## Dual 156.25 MHz HCSL clock source The DSC2044FE2-H0006T is a MEMS-based XO (Standard) from Microchip's DSC2044 series, delivering two identical 156.25 MHz outputs in HCSL logic levels — the frequency and signal type used as the reference clock for PCI Express Gen 1/2/3 and many 10GbE PHYs. HCSL (High-Speed Current Steering Logic) swings 700–800 mV peak-to-peak into a 50-Ω termination to ground, which means the same output can drive a PCIe slot or a SerDes reference directly without external level translation. The 2.25V–3.6V supply range lets the oscillator run from a 2.5V or 3.3V rail without a dedicated regulator — useful when the board already carries one of those voltages for the FPGA or switch ASIC. Maximum supply current is 60 mA typical with both outputs active; disabling the outputs via the Enable/Disable pin drops the draw to 23 mA max, which helps meet standby power targets in line-card or access-point designs. ## MEMS reliability and temperature range ## Package and board layout note The 14-VFQFN exposed-pad package (3.20 mm x 2.50 mm, 0.90 mm height) requires a thermal pad on the PCB for heat sinking — the pad also provides a low-inductance ground return for the HCSL outputs, which matters for signal integrity at 156.25 MHz.","metaTitle":"DSC2044FE2-H0006T – Microchip MEMS XO, 156.25 MHz HCSL","metaDescription":"DSC2044FE2-H0006T: Microchip DSC2044 MEMS XO, dual 156.25 MHz HCSL outputs, ±25 ppm stability, 2.25V–3.6V supply, -20°C–70°C, 14-VFQFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Height":"0.035\\\" (0.90mm)","Output":"HCSL","Series":"DSC2044","Package":"Tape & Reel (TR)","Function":"Enable/Disable","Base Resonator":"MEMS","Package / Case":"14-VFQFN Exposed Pad","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":"DSC2044","Frequency Stability":"±25ppm","Frequency - Output 1":"156.25MHz","Frequency - Output 2":"156.25MHz","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-20°C~70°C","Current - Supply (Max)":"60mA (Typ)","Current - Supply (Disable) (Max)":"23 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6681d72ec6fe37cacceaa2f78519d968.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between HCSL and LVDS for this oscillator?","answer":"HCSL is a current-mode logic that swings 700–800 mV into a 50-Ω termination to ground, while LVDS swings 350 mV into a 100-Ω differential termination. HCSL is the standard for PCIe reference clocks; LVDS is more common in backplane and SerDes applications. The DSC2044FE2-H0006T outputs HCSL only — if your BOM calls for LVDS, you need a different DSC2044 variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC2044FE2-H0006T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC2044FE2-H0006T 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}}