{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AHCT138N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AHCT138N","canonicalUrl":"https://icboms.com/texas-instruments/SN74AHCT138N","factsUrl":"https://icboms.com/api/mcp/products/SN74AHCT138N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AHCT series, Decoder/Demultiplexer, 1 x 3:8, 4.5V ~ 5.5V single supply, -40°C ~ 85°C, 16-DIP (0.300\", 7.62mm) through-hole, SN74AHCT138N","salesMarkdown":"## What this 3:8 decoder does on your board The SN74AHCT138N is a single 1-of-8 decoder/demultiplexer from TI's 74AHCT family — you feed it a 3-bit binary address and it pulls one of eight outputs low (active-low outputs). It runs on a single 4.5V to 5.5V supply, so it's a direct fit for 5V TTL or CMOS logic systems without level shifting. ## Through-hole package and breadboard fit Housed in a 16-DIP (0.300\", 7.62mm) through-hole package, this part is a natural for prototyping — you can drop it into a solderless breadboard or a DIP socket without a soldering iron. The 8mA output drive per pin is enough to light a standard LED or drive a logic input, but don't expect it to switch a relay coil directly. ## Active production — no obsolescence worry No end-of-life notice, no last-time-buy deadline — you can design it into a new BOM or replenish an existing line without supply-chain panic. Sourced per RFQ against your quantity; confirm current pricing and lead time at quote.","metaTitle":"SN74AHCT138N Decoder/Demultiplexer 1x3:8 16-DIP Active TI","metaDescription":"Texas Instruments SN74AHCT138N 1-of-8 decoder/demux, 4.5V-5.5V supply, -40°C to 85°C, 16-DIP through-hole. Active production, ROHS3. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"74AHCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Type":"Decoder/Demultiplexer","Series":"74AHCT","Circuit":"1 x 3:8","Package":"Tube","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Independent Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-PDIP","Current - Output High, Low":"8mA, 8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.01","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90400","currency":"USD"},{"qty":25,"price":"$0.85760","currency":"USD"},{"qty":100,"price":"$0.70460","currency":"USD"},{"qty":250,"price":"$0.65864","currency":"USD"},{"qty":500,"price":"$0.58204","currency":"USD"},{"qty":1000,"price":"$0.45951","currency":"USD"},{"qty":2500,"price":"$0.43350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/47119f1397fc79bf576593465c2f3916.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the SN74AHCT138N used for?","answer":"It's a 1-of-8 decoder/demultiplexer: take a 3-bit address and enable one of eight outputs. Common jobs: memory chip-select decoding, address decoding in microprocessor systems, or routing a signal to one of eight destinations."},{"question":"How does the 74AHCT138 differ from the 74HC138?","answer":"Both are 3:8 decoders with the same pinout and function. The AHCT version is optimized for 5V TTL-compatible inputs and offers slightly faster propagation delay and higher output drive than the HC variant at 5V. For a 5V-only design, AHCT is the better pick."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AHCT138N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AHCT138N 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}}