{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCT14DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCT14DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCT14DR","factsUrl":"https://icboms.com/api/mcp/products/SN74HCT14DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series, Inverter Schmitt Trigger, 6 Circuits, 1 Input, 4mA output, 4.5V to 5.5V supply, -40°C to 85°C, 14-SOIC package.","salesMarkdown":"The Texas Instruments SN74HCT14DR is a hex Schmitt-trigger inverter in the 74HCT logic family. It contains six independent inverters, each with a Schmitt-trigger input that provides hysteresis for clean switching on slowly changing or noisy signals. Typical applications include signal conditioning, debouncing switch inputs, squaring up oscillator waveforms, and general-purpose logic inversion in industrial control, telecom, and consumer equipment where noise immunity matters. ## Supply voltage and logic-level compatibility Input logic levels are specified at 0.5 V to 0.6 V for low and 1.9 V to 2.1 V for high, which are compatible with standard TTL thresholds. This means the SN74HCT14DR can directly interface with legacy 5 V TTL outputs and with 3.3 V CMOS outputs that swing above 2.1 V, provided the 3.3 V device's VOH meets the high-level requirement. The Schmitt-trigger hysteresis (typically 0.4 V to 0.6 V) rejects noise on long traces or from inductive coupling in motor-drive environments. ## Timing and output drive Maximum propagation delay is 30 ns at 5.5 V with a 50 pF load. This is adequate for most 5 V logic paths running at clock rates up to about 10 MHz; for faster edges the 74HCS series (e.g., SN74HCS04PWR) offers 16 ns at 6 V. For heavier loads like relay coils or long backplane lines, buffer with a discrete transistor or a higher-drive logic family. The 14-SOIC package (3.90 mm width,) is a standard surface-mount footprint that reflows well on standard FR-4 with a 0.65 mm pitch. No special moisture sensitivity level is stated, but as a plastic SOIC it is typically MSL 1 or 2 — verify the reel label for bake requirements if the sealed bag has been opened. For dual-sourcing resilience, the SN74HCS04PWR (74HCS series) offers a pin-compatible Schmitt-trigger inverter with lower propagation delay and a wider 2 V to 6 V supply range, though it is not a direct electrical replacement due to different input thresholds.","metaTitle":"SN74HCT14DR Texas Instruments Inverter, Schmitt Trigger","metaDescription":"Texas Instruments SN74HCT14DR hex Schmitt-trigger inverter. 4.5V–5.5V supply, 30ns prop delay, -40°C to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"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":"$0.43","priceTiers":[{"qty":1,"price":"$0.43000","currency":"USD"},{"qty":10,"price":"$0.34900","currency":"USD"},{"qty":25,"price":"$0.31920","currency":"USD"},{"qty":100,"price":"$0.23740","currency":"USD"},{"qty":250,"price":"$0.21516","currency":"USD"},{"qty":500,"price":"$0.17806","currency":"USD"},{"qty":1000,"price":"$0.13354","currency":"USD"},{"qty":2500,"price":"$0.12241","currency":"USD"},{"qty":5000,"price":"$0.11499","currency":"USD"},{"qty":12500,"price":"$0.10757","currency":"USD"},{"qty":25000,"price":"$0.10498","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8d88de39ec2300c0eb42ce5fd82c9286.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74HCT14DR/alternatives.json"},"ai":{"faq":[{"question":"Can SN74HCT14DR replace 74HC14?","answer":"The SN74HCT14DR is functionally equivalent to the 74HC14 — both are hex Schmitt-trigger inverters in the same pinout. The HCT variant has TTL-compatible input thresholds (low: 0.5 V–0.6 V, high: 1.9 V–2.1 V), while the HC variant uses CMOS thresholds (typically 0.3 Vdd and 0.7 Vdd). In a 5 V system, the HCT version will work as a drop-in replacement for HC14 if the driving logic meets the TTL high-level requirement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCT14DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCT14DR 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}}