{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC138DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC138DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC138DR","factsUrl":"https://icboms.com/api/mcp/products/SN74HC138DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series, SN74HC138DR, 1 x 3:8 Decoder/Demultiplexer, 2V ~ 6V supply, -40°C ~ 85°C, 16-SOIC surface-mount package.","salesMarkdown":"## Active production – no obsolescence watch needed For BOM planning, this part does not trigger a lifecycle risk flag — it is a standard 74HC logic device with stable supply. ROHS3 compliant, so it meets current European and global restriction requirements without an exemption expiry concern. ## What the 3:8 decoder does on your board The SN74HC138DR is a single 3-to-8 line decoder/demultiplexer. It takes a 3-bit binary address on its select inputs and asserts one of eight active-low outputs. Typical uses include memory-chip select decoding, address demultiplexing in microcontroller systems, or routing a data signal to one of eight destinations. The 2V to 6V supply range lets it bridge 3.3V and 5V logic domains without a level translator — a practical advantage when mixing a 3.3V MCU with 5V peripherals. Output current capability is 5.2 mA sink and 5.2 mA source, enough to drive standard CMOS logic inputs or low-power LEDs directly. For heavier loads, buffer the outputs. ## Temperature grade and package – fit for industrial environments The commercial-grade 0°C to 70°C parts would not survive these environments. Housed in a 16-SOIC package with 0.154-inch body width and 1.27 mm pin pitch. The footprint matches standard SOIC-16 land patterns; no special fan-out or via-in-pad is required. The surface-mount form factor suits automated pick-and-place assembly. ## Sourcing and supply – multi-source reach The SN74HC138DR is a standard TI 74HC logic part with broad distributor coverage. For BOM quantities, we source per RFQ — confirm current lead time and pricing at quote time. No single-source risk: the 74HC138 function is second-sourced by multiple manufacturers, so qualifying an alternate is straightforward if supply tightens.","metaTitle":"SN74HC138DR 3-to-8 Decoder/Demux – TI 74HC Active, 16-SOIC","metaDescription":"Texas Instruments SN74HC138DR 1x3:8 decoder/demultiplexer, 2V–6V supply, -40°C to 85°C, 16-SOIC. Active lifecycle, ROHS3 compliant. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"Type":"Decoder/Demultiplexer","Series":"74HC","Circuit":"1 x 3:8","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Independent Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-SOIC","Current - Output High, Low":"5.2mA, 5.2mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.46","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.46000","currency":"USD"},{"qty":10,"price":"$0.39100","currency":"USD"},{"qty":25,"price":"$0.36480","currency":"USD"},{"qty":100,"price":"$0.29190","currency":"USD"},{"qty":250,"price":"$0.27104","currency":"USD"},{"qty":500,"price":"$0.22936","currency":"USD"},{"qty":1000,"price":"$0.17723","currency":"USD"},{"qty":2500,"price":"$0.15608","currency":"USD"},{"qty":5000,"price":"$0.14602","currency":"USD"},{"qty":12500,"price":"$0.14250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9d9a465d5736e5bba69d52db28153a25.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SN74HC138DR pin-compatible with the 74HC138 in a DIP-16 package?","answer":"The SN74HC138DR is a surface-mount 16-SOIC package, not DIP-16. Functionally identical to the standard 74HC138, but the footprint is different. For a through-hole replacement, look at the SN74HC138N (PDIP-16). The logic function and pinout are the same; only the package changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC138DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC138DR 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}}