{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS14DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS14DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS14DR","factsUrl":"https://icboms.com/api/mcp/products/SN74LS14DR","rawCanonicalId":null},"summary":{"shortDescription":"TI 74LS series, SN74LS14DR, hex Schmitt-trigger inverter, 6 circuits, 1 input per circuit, 4.75V-5.25V supply, 22ns propagation delay @ 5V/15pF, 0°C to 70°C, 14-SOIC package.","salesMarkdown":"## What this hex Schmitt-trigger inverter does on the board The Texas Instruments SN74LS14DR is a hex inverter with Schmitt-trigger inputs from the 74LS bipolar low-power Schottky family. It packs six independent inverters into a 14-SOIC package, each with a single input and a Schmitt-trigger hysteresis that cleans up slow or noisy edges — useful for debouncing switches, squaring up oscillator waveforms, or interfacing with sensors that produce ragged transitions. ## Key ratings and what they mean for the BOM Supply range of 4.75V to 5.25V ties it to classic 5V TTL rails — not a 3.3V or 1.8V logic part, so confirm your rail before fitting it into a mixed-voltage design. Propagation delay of 22ns at 5V with a 15pF load sets the timing budget for the signal path. In a 10 MHz clock chain you lose about a quarter-cycle per gate; cascading multiple stages needs a timing analysis. Output drive is rated 400µA sourcing and 8mA sinking — enough to drive a standard TTL load or a low-power LED indicator, but not a high-current relay or bus without a buffer. Input logic thresholds are 0.5V low and 1.9V high, with the Schmitt hysteresis providing noise immunity of about 1.4V typical. That margin handles a slowly rising RC waveform or a long PCB trace with crosstalk. ## Temperature grade and environment Rated 0°C to 70°C commercial temperature range, so it fits indoor equipment, office appliances, and benchtop instrumentation — not an engine bay or outdoor telecom cabinet without additional thermal management. ## Lifecycle and sourcing posture The SN74LS14DR carries an Active lifecycle status from TI, with ROHS3 compliance.","metaTitle":"SN74LS14DR 74LS Schmitt Trigger Inverter, 6-ch SOIC-14, 22ns","metaDescription":"TI SN74LS14DR 74LS hex Schmitt-trigger inverter, 6 circuits, 4.75V-5.25V supply, 22ns delay at 5V/15pF, 0-70°C, SOIC-14. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74LS","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Schmitt Trigger","Logic Type":"Inverter","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Number of Inputs":"1","Voltage - Supply":"4.75V ~ 5.25V","Number of Circuits":"6","Operating Temperature":"0°C ~ 70°C","Input Logic Level - Low":"0.5V","Supplier Device Package":"14-SOIC","Input Logic Level - High":"1.9V","Current - Output High, Low":"400µA, 8mA","Max Propagation Delay @ V, Max CL":"22ns @ 5V, 15pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.74","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.74000","currency":"USD"},{"qty":10,"price":"$0.65100","currency":"USD"},{"qty":25,"price":"$0.61120","currency":"USD"},{"qty":100,"price":"$0.49880","currency":"USD"},{"qty":250,"price":"$0.46332","currency":"USD"},{"qty":500,"price":"$0.39432","currency":"USD"},{"qty":1000,"price":"$0.31546","currency":"USD"},{"qty":2500,"price":"$0.28588","currency":"USD"},{"qty":5000,"price":"$0.27900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ce6eaf85598b522c720e7cc12f7c7f90.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can SN74LS14DR be used as a replacement for 74LS14N?","answer":"The SN74LS14DR is the surface-mount SOIC-14 version of the same 74LS14 hex Schmitt-trigger inverter. The 74LS14N is the DIP-14 through-hole variant. Functionally identical, but the package and footprint differ — the DR suffix indicates a SOIC package, not a DIP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS14DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS14DR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}