{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCT14DT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCT14DT","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCT14DT","factsUrl":"https://icboms.com/api/mcp/products/SN74HCT14DT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series hex inverter with Schmitt-trigger inputs, 6 circuits, 1 input per channel, 14-SOIC package, 4.5V to 5.5V supply, -40°C to 85°C operating range, 30ns max propagation delay at 5.5V and 50pF.","salesMarkdown":"## Six Schmitt-trigger inverters in a 14-SOIC — what the SN74HCT14DT brings to the board The Texas Instruments SN74HCT14DT packs six independent inverter gates, each with a Schmitt-trigger input, into a 14-SOIC package. It runs from a 4.5V to 5.5V supply — the classic HCT logic family that is TTL-compatible on the input side while using a CMOS output structure. The Schmitt-trigger hysteresis gives clean switching on slowly changing or noisy input signals, with defined low-level thresholds at 0.5V to 0.6V and high-level thresholds at 1.9V to 2.1V. Propagation delay maxes out at 30ns into a 50pF load at 5.5V, and each output can source or sink 4mA. The operating temperature range is -40°C to 85°C, covering industrial and most commercial environments. ## Schmitt-trigger inputs — why the hysteresis matters Unlike a plain unbuffered inverter, the SN74HCT14DT's Schmitt-trigger inputs reject input noise and slow edges. The low-to-high and high-to-low thresholds are separated by about 1.3V of hysteresis, so a noisy or slowly rising signal from a switch, sensor, or RC oscillator won't cause multiple transitions or oscillation at the output. This is the part you reach for when cleaning up a bouncy pushbutton or squaring up a slow ramp from an external capacitor. ## Active production, ROHS3 compliant — no LTB clock ticking The SN74HCT14DT carries an Active product status and is ROHS3 compliant. There is no last-time-buy notice or obsolescence watch on this part, so it remains a safe choice for both new designs and ongoing production. ## 14-SOIC footprint — layout and assembly notes The 14-SOIC package (3.90mm body width, 0.154\" pitch) is a common, widely supported footprint. Surface-mount assembly is straightforward with standard reflow profiles. The device is MSL 1 per the 74HCT family typical rating — no bake-out required before reflow unless the moisture-barrier bag has been compromised. For rework, standard hot-air profiles for SOIC-14 work fine; the package is robust enough for hand-soldering with a fine-tip iron.","metaTitle":"SN74HCT14DT 74HCT Hex Inverter with Schmitt-Trigger Inputs","metaDescription":"TI SN74HCT14DT hex Schmitt-trigger inverter in 14-SOIC. 4.5V–5.5V supply, 30ns propagation delay at 50pF, -40°C to 85°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Series":"74HCT","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":"4.5V ~ 5.5V","Number of Circuits":"6","Operating Temperature":"-40°C ~ 85°C","Input Logic Level - Low":"0.5V ~ 0.6V","Supplier Device Package":"14-SOIC","Input Logic Level - High":"1.9V ~ 2.1V","Current - Quiescent (Max)":"2 µA","Current - Output High, Low":"4mA, 4mA","Max Propagation Delay @ V, Max CL":"30ns @ 5.5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.16","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.16000","currency":"USD"},{"qty":10,"price":"$1.03500","currency":"USD"},{"qty":25,"price":"$0.98240","currency":"USD"},{"qty":100,"price":"$0.80700","currency":"USD"},{"qty":250,"price":"$0.75436","currency":"USD"},{"qty":500,"price":"$0.66664","currency":"USD"},{"qty":1250,"price":"$0.52629","currency":"USD"},{"qty":2500,"price":"$0.49650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8d88de39ec2300c0eb42ce5fd82c9286.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between SN74HCT14D and SN74HCT14DT?","answer":"The 'T' suffix on the SN74HCT14DT indicates tape-and-reel packaging, while the SN74HCT14D (without the 'T') typically ships in tubes or other packaging formats. The silicon and electrical specifications are identical. Choose the 'DT' variant for automated pick-and-place assembly lines that require tape-and-reel input."},{"question":"Can I replace SN74HCT14DT with SN74HC14D?","answer":"The SN74HC14D is a functionally equivalent hex Schmitt-trigger inverter, but it operates on standard CMOS logic levels rather than TTL-compatible HCT levels. The HC variant has different input threshold voltages (typically 1.5V to 3.5V at 5V supply) compared to the HCT's TTL-compatible thresholds (0.5V to 2.1V). If your driving logic is TTL-level (e.g., from a 5V bipolar TTL output), the HCT version is the correct choice. For CMOS-only drive, the HC variant may work, but verify the input thresholds against your source logic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCT14DT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCT14DT 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}}