{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1222BI1-51M00000","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1222BI1-51M00000","canonicalUrl":"https://icboms.com/microchip/DSC1222BI1-51M00000","factsUrl":"https://icboms.com/api/mcp/products/DSC1222BI1-51M00000","rawCanonicalId":null},"summary":{"shortDescription":"Microchip DSC1222 series XO (Standard), 51 MHz, LVPECL output, 2.5V–3.3V supply, ±50 ppm stability, -40°C to 85°C, 6-VDFN package, Enable/Disable function.","salesMarkdown":"## 51 MHz LVPECL clock – who specifies it and why The DSC1222BI1-51M00000: This MEMS-based XO (Standard) outputs a 51 MHz LVPECL signal, a frequency commonly used to clock 10/100/1000 Ethernet PHYs, Fibre Channel controllers, or DDR memory interfaces where tight jitter is required and a quartz crystal would introduce phase noise. The LVPECL differential output delivers the low-skew, high-slew-rate edge needed for long trace runs on a backplane or across a large FPGA bank. The oscillator accepts a supply from 2.5V to 3.3V, so it can run directly from a 3.3V FPGA I/O bank or a 2.5V SerDes rail without an intermediate LDO. ## Industrial temperature range and stability margin For an outdoor Ethernet switch that sees -30°C overnight and 70°C in direct sun, the stability margin keeps the link up without a clock-recovery PLL retrain. ## Package and footprint – VDFN-6 layout reuse The 6-VDFN package measures 5.00mm x 3.20mm with a seated height of 0.90 mm. This footprint is shared across the DSC1222 family and many other MEMS oscillators, so a single PCB pad pattern can serve multiple frequency variants.","metaTitle":"DSC1222BI1-51M00000 – 51 MHz LVPECL MEMS Oscillator","metaDescription":"DSC1222BI1-51M00000 XO (Standard) 51 MHz LVPECL output, 2.5V–3.3V supply, ±50 ppm stability, -40°C to 85°C, 6-VDFN. Active product – 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":"LVPECL","Series":"DSC1222","Package":"Tube","Ratings":"-","Function":"Enable/Disable","Frequency":"51 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-VDFN","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.197\\\" L x 0.126\\\" W (5.00mm x 3.20mm)","Voltage - Supply":"2.5V ~ 3.3V","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"50mA (Typ)","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"23mA (Typ)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"How can I order DSC1222BI1-51M00000 or request a quote?","answer":"The DSC1222BI1-51M00000 is an active, in-production part. Submit an RFQ with your target quantity and target price; we source through independent distribution and confirm availability and current pricing at quote time. No stock-holding claim is made – each order is quoted individually."},{"question":"What package does DSC1222BI1-51M00000 come in?","answer":"It is supplied in a 6-VDFN package measuring 5.00mm x 3.20mm with a seated height of 0.90 mm. The package is surface-mount."},{"question":"Can DSC1222BI1-51M00000 replace DSC1222BI1-50M00000?","answer":"Both are in the same DSC1222 series and share the same package, supply range, and temperature grade. The only difference is the output frequency: 51 MHz vs 50 MHz. A direct replacement depends on whether the downstream PLL or clock tree can accept the 1 MHz frequency shift. Compare the datasheet timing requirements before substituting."},{"question":"Is DSC1222BI1-51M00000 compatible with 3.3V systems?","answer":"Yes. The supply voltage range of 2.5V to 3.3V includes 3.3V. The LVPECL output is a differential pair that swings below the supply rail, so a 3.3V supply produces a nominal 3.3V LVPECL swing compatible with common 3.3V logic families."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1222BI1-51M00000","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1222BI1-51M00000 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}}