{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCT14D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCT14D","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCT14D","factsUrl":"https://icboms.com/api/mcp/products/SN74HCT14D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series, Logic type Inverter, Schmitt Trigger, 6 Circuits, 1 Input, 4mA output, 4.5V to 5.5V supply, -40°C to 85°C, Surface Mount 14-SOIC.","salesMarkdown":"## Six Schmitt-trigger inverters in a 14-SOIC — what it does and where it fits The Texas Instruments SN74HCT14D packs six independent inverter gates with Schmitt-trigger inputs into a 14-SOIC surface-mount package. Each channel takes one input and delivers a clean inverted output, with the Schmitt action providing hysteresis that cleans up slow edges, noisy signals, or switch-contact bounce. It runs from a 4.5 V to 5.5 V supply and draws just 2 µA quiescent, making it a natural fit for 5 V industrial control, PLC I/O modules, sensor conditioning, and any board where a noisy backplane needs signal cleanup before it hits the MCU. The -40°C to 85°C range covers factory-floor and outdoor telecom cabinets without qualification surprises. ## 30 ns propagation delay — timing budget for a 5 V bus The 30 ns max propagation delay at 5.5 V and 50 pF load sets the timing margin for control and data signals running across a backplane or between logic families. At 5 V nominal the delay is typically shorter, but the 30 ns ceiling is the number to use in worst-case timing analysis. For a 10 MHz clock path that leaves about 70 ns of the period for setup and hold — plenty for most 5 V logic, but worth checking if the signal passes through multiple gates in series. The 4 mA output drive at both high and low levels is enough to drive a handful of CMOS loads or a short ribbon cable, but not a long bus without a buffer. ## Schmitt trigger — what it cleans up The Schmitt-trigger inputs define two distinct thresholds: a low-going input below 0.5 V to 0.6 V reads as a logic 0, and a high-going input above 1.9 V to 2.1 V reads as a logic 1. The gap between them — roughly 1.3 V of hysteresis — rejects noise and prevents multiple transitions on a slowly rising signal from a capacitor, a sensor, or a mechanical switch. That hysteresis is what makes this part the go-to for debouncing pushbuttons, squaring up a 50/60 Hz line-frequency signal, or cleaning the output of an optocoupler that has a slow turn-on edge. ## SOIC-14 — rework and footprint notes The 14-SOIC body measures 3.90 mm wide with 0.154\" pitch — a standard footprint that reflows cleanly with a typical leaded profile. The 2 µA quiescent current means no thermal concern even in still air, so no thermal pad or via stitching is needed. ## Lifecycle and supply posture The SN74HCT14D carries an Active lifecycle status with ROHS3 compliance. For dual-sourcing or a lower-power alternative, the SN74HCS04PWR (2 V to 6 V, 16 ns at 6 V, 125°C rated) is a functional peer in the same 6-channel inverter family — but the HCT14D runs from 5 V only and uses the original HCT thresholds, so verify the logic levels before swapping.","metaTitle":"SN74HCT14D 74HCT Hex Inverter with Schmitt Trigger, 30 ns","metaDescription":"Texas Instruments SN74HCT14D hex Schmitt-trigger inverter in SOIC-14. 4.5–5.5 V supply, 2 µA quiescent, 30 ns @ 5.5 V, 50 pF. Industrial temp -40 to 85°C.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Series":"74HCT","Package":"Tube","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":1000,"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 SN74HC14D?","answer":"The SN74HCT14D is the HCT (High-Speed CMOS, TTL-compatible) version, with input thresholds set to 0.8 V and 2.0 V typical to interface directly with TTL logic. The HC version uses CMOS thresholds at 0.3 V and 1.7 V typical. For a 5 V system with mixed TTL and CMOS, the HCT variant avoids level-shifting. Both are hex Schmitt-trigger inverters in the same pinout and package."},{"question":"Is the SN74HCT14D a Schmitt trigger device?","answer":"Yes, each of the six inverter channels has a Schmitt-trigger input with hysteresis for noise rejection and slow-edge cleanup."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCT14D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCT14D 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}}