{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AHCT139D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AHCT139D","canonicalUrl":"https://icboms.com/texas-instruments/SN74AHCT139D","factsUrl":"https://icboms.com/api/mcp/products/SN74AHCT139D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AHCT series decoder/demultiplexer, SN74AHCT139D, 1 x 2:4 circuit, dual independent decoders, 16-SOIC surface-mount package, 4.5V~5.5V single supply, -40°C~85°C.","salesMarkdown":"## Active dual 2:4 decoder — BOM-fit and supply rails The SN74AHCT139D: Two independent 1-of-4 decoder/demultiplexer circuits in one 16-SOIC package. Each section takes a 2-bit binary address and a strobe input, decoding into four active-low outputs. Use it for memory chip-select generation, display multiplexing, or routing data to one of four destinations per bank. The 8 mA symmetric output drive (source and sink) handles standard CMOS loads, LED indicators with a series resistor, or driving low-power buffer inputs. The supply rail is the same 5 V rail used by many MCUs and DSPs listed in the same catalog category. ## Industrial temperature grade and package constraints This covers factory-floor control cabinets, outdoor telecom shelters, and automotive cabin environments. No derating needed for typical 5 V CMOS loads at the temperature extremes. 16-SOIC narrow body (3.90 mm width, 0.154\" pitch, 1.27 mm lead pitch). The footprint matches legacy 74-series SOIC-16 layout — no board spin if replacing an older 74LS or 74HC dual decoder. Tube packaging means the parts arrive in antistatic tubes; reel/tape available on alternate order codes if needed for automated assembly. ## ROHS3 compliance and procurement posture ROHS3 compliant — no RoHS exemptions claimed. The part carries Texas Instruments' standard lead-free finish (matte tin on leads). Available through authorized and independent distribution channels.","metaTitle":"TI SN74AHCT139D Decoder/Demux, 2x 2:4, 16-SOIC, Active","metaDescription":"Texas Instruments SN74AHCT139D dual 2:4 decoder/demultiplexer. 4.5-5.5V supply, 8mA drive, -40°C to 85°C. 16-SOIC. Active production, ROHS3. Request a quote.","metaKeywords":null},"attributes":{"series":"74AHCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Type":"Decoder/Demultiplexer","Series":"74AHCT","Circuit":"1 x 2:4","Package":"Tube","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Independent Circuits":"2","Operating Temperature":"-40°C ~ 85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-SOIC","Current - Output High, Low":"8mA, 8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.28","priceTiers":[{"qty":1,"price":"$1.28000","currency":"USD"},{"qty":10,"price":"$1.14100","currency":"USD"},{"qty":25,"price":"$1.08320","currency":"USD"},{"qty":100,"price":"$0.88990","currency":"USD"},{"qty":250,"price":"$0.83184","currency":"USD"},{"qty":500,"price":"$0.73512","currency":"USD"},{"qty":1000,"price":"$0.58035","currency":"USD"},{"qty":2500,"price":"$0.54750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/115676b89b87b156fbf7e74b18b3c0b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74AHCT139D/alternatives.json"},"ai":{"faq":[{"question":"What is SN74AHCT139D's type and what does a 1 x 2:4 decoder/demultiplexer do?","answer":"It is a dual 2:4 decoder/demultiplexer. Two independent circuits each take a 2-bit address and a strobe, producing one active-low output out of four. Commonly used for memory chip-select generation or routing a signal to one of four outputs."},{"question":"What compliance documentation does Texas Instruments provide for SN74AHCT139D?","answer":"The part is ROHS3 compliant with lead-free matte tin finish."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AHCT139D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AHCT139D 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}}