{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK61A2-312M50SIAR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK61A2-312M50SIAR","canonicalUrl":"https://icboms.com/texas-instruments/LMK61A2-312M50SIAR","factsUrl":"https://icboms.com/api/mcp/products/LMK61A2-312M50SIAR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMK61XX series XO (Standard), LMK61A2-312M50SIAR, 312.5 MHz, LVDS output, 3.3 V supply, ±50 ppm stability, -40 to +85°C, 6-SMD module.","salesMarkdown":"## Active production — a clean BOM line for a 312.5 MHz reference clock The LMK61A2-312M50SIAR is an active-production XO (Standard) from Texas Instruments' LMK61XX series, delivering a fixed 312.5 MHz LVDS output from a silicon resonator — no quartz crystal, no mechanical aging drift, and a faster startup than a crystal oscillator. ## LVDS output and the 100-ohm termination rule The LVDS output delivers a differential pair that expects a 100-ohm termination resistor at the receiver — without it the common-mode range shifts and the signal integrity degrades. The 196 mA max supply current includes the output driver bias; when the Enable/Disable pin pulls the output to high-Z, the supply drops to 136 mA max. The 3.3 V supply rail is the only power input — no separate core or I/O voltage. The silicon resonator base means the part starts up in microseconds rather than milliseconds, which matters for applications where the clock must be stable before the downstream PLL locks. ## Footprint and board integration — standard 5x7 mm oscillator package Surface-mount mounting with tape-and-reel packaging suits automated pick-and-place assembly. No external load capacitors or crystal matching network are needed — the silicon resonator and output driver are self-contained in the module.","metaTitle":"Texas Instruments LMK61A2-312M50SIAR XO, 312.5 MHz, LVDS","metaDescription":"Texas Instruments LMK61A2-312M50SIAR XO (Standard) with LVDS output, 312.5 MHz, ±50 ppm stability, -40 to +85°C. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Mfr":"Texas Instruments","Type":"XO (Standard)","Output":"LVDS","Series":"LMK61XX","Ratings":"-","Function":"Enable/Disable","Frequency":"312.5 MHz","Packaging":"Tape & Reel (TR)","Part Status":"Active","Mounting Type":"Surface Mount","Base Resonator":"Silicon","Package / Case":"6-SMD Module","lifecycle_stage":"eol_hot","Size / Dimension":"0.276\\\" L x 0.197\\\" W (7.00mm x 5.00mm)","Voltage - Supply":"3.3V","Base Product Number":"LMK61A2","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.045\\\" (1.15mm)","Operating Temperature":"-40°C ~ 85°C","Current - Supply (Max)":"196mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"136mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.8575","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4f79d073177f07fede4fe798bc432227.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LMK61A2-312M50SIAR/alternatives.json"},"ai":{"faq":[{"question":"What is the output type of the LMK61A2-312M50SIAR?","answer":"The output is LVDS (Low-Voltage Differential Signaling), a differential pair that requires a 100-ohm termination resistor at the receiver for proper signal integrity. The common-mode voltage is set by the LVDS standard, typically around 1.2 V."},{"question":"What supply voltage does the LMK61A2-312M50SIAR need?","answer":"There is no separate core or I/O voltage — just one clean 3.3 V rail with adequate decoupling at the module pins."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK61A2-312M50SIAR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMK61A2-312M50SIAR 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}}