{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74BCT125AD","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74BCT125AD","canonicalUrl":"https://icboms.com/texas-instruments/SN74BCT125AD","factsUrl":"https://icboms.com/api/mcp/products/SN74BCT125AD","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74BCT series, Buffer Non-Inverting, 4-element, 1-bit per element, 3-State output, 14-SOIC (0.154\", 3.90mm Width), Surface Mount, Tube.","salesMarkdown":"## What the 15 mA / 64 mA drive means on a real board The SN74BCT125AD: This is a quad non-inverting buffer with 3-state outputs — four independent single-bit channels, each able to source 15 mA and sink 64 mA at 5 V. The asymmetric drive (weak source, strong sink) is characteristic of TTL-compatible logic: the output can pull a bus line low through a 50 Ω termination but needs a pull-up resistor to drive a high-impedance load high. On a 5 V backplane with 4.7 kΩ pull-ups, the 15 mA source margin is comfortable; driving a 50 Ω transmission line directly is outside its capability. ## Supply rail and temperature — 5 V only, indoor use No industrial or automotive temperature rating is available in this variant. ## Package and footprint — narrow SOIC, easy rework Housed in a 14-SOIC narrow body (3.90 mm width, 0.154\" pitch), the SN74BCT125AD uses a standard JEDEC footprint shared with hundreds of other 14-pin SOIC logic parts. The 1.27 mm lead pitch is hand-solderable and rework-friendly under a hot-air station. No exposed pad or thermal slug — power dissipation is handled through the leads and the FR-4 board copper.","metaTitle":"SN74BCT125AD Texas Instruments 74BCT Quad Buffer, 15mA/64mA","metaDescription":"Texas Instruments SN74BCT125AD quad non-inverting buffer with 3-state outputs. Active production, ROHS3 compliant. 4.5V-5.5V supply, 14-SOIC.","metaKeywords":null},"attributes":{"series":"74BCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74BCT","Package":"Tube","Logic Type":"Buffer, Non-Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"4","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"14-SOIC","Current - Output High, Low":"15mA, 64mA","Number of Bits per Element":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.22","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.22000","currency":"USD"},{"qty":10,"price":"$3.79400","currency":"USD"},{"qty":25,"price":"$3.58720","currency":"USD"},{"qty":100,"price":"$3.10880","currency":"USD"},{"qty":250,"price":"$2.94936","currency":"USD"},{"qty":500,"price":"$2.64644","currency":"USD"},{"qty":1000,"price":"$2.25600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/de6cab4381a6b5f6cb8012c108222b79.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can SN74BCT125AD replace SN74LS645-1N without rewiring?","answer":"No. The SN74LS645-1N is a through-hole DIP-20 transceiver with 8-bit bidirectional data flow, while the SN74BCT125AD is a surface-mount SOIC-14 quad buffer with unidirectional 3-state outputs. The pinout, package, and function are completely different — a board redesign is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74BCT125AD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74BCT125AD 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}}