{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ABT126RGYR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ABT126RGYR","canonicalUrl":"https://icboms.com/texas-instruments/SN74ABT126RGYR","factsUrl":"https://icboms.com/api/mcp/products/SN74ABT126RGYR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74ABT series buffer, non-inverting, 3-state, 4 elements, 1 bit per element, 32mA high / 64mA low output, 4.5V to 5.5V supply, -40°C to 85°C, 14-VFQFN exposed pad (3.5x3.5mm), surface mount.","salesMarkdown":"## 5V bus buffer with asymmetric drive — what the 32 mA / 64 mA split means The Texas Instruments SN74ABT126RGYR is a 74ABT-series quad buffer with non-inverting logic and 3-state outputs, each element handling one bit. The 3-state control lets you float the outputs for shared bus architectures where multiple drivers talk to the same line. With four independent buffers in a single 14-VFQFN package (3.5x3.5 mm), it saves board area compared to four discrete SOIC-8 buffers. The 5 V ± 0.5 V supply range is a direct fit for legacy 5 V TTL backplanes and 5 V-only microcontroller buses; it does not tolerate 3.3 V or 1.8 V rails without a level translator. ## Package and footprint — the exposed pad matters Without the via stitch, junction temperature rises faster under continuous 64 mA sink per channel — the pad is the primary thermal path. The small footprint is a win for dense PCB layouts, but the pad's solder paste coverage needs to be controlled to avoid voiding or tombstoning during reflow.","metaTitle":"SN74ABT126RGYR Buffer, Non-Inverting, 3-State, 14-VQFN","metaDescription":"Texas Instruments SN74ABT126RGYR 74ABT series buffer, non-inverting, 3-state output, 4.5V-5.5V supply, 32mA/64mA output, -40°C to 85°C, 14-VFQFN.","metaKeywords":null},"attributes":{"series":"74ABT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74ABT","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"Buffer, Non-Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"14-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"4","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"14-VQFN (3.5x3.5)","Current - Output High, Low":"32mA, 64mA","Number of Bits per Element":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.89","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.89000","currency":"USD"},{"qty":10,"price":"$0.79900","currency":"USD"},{"qty":25,"price":"$0.75880","currency":"USD"},{"qty":100,"price":"$0.62330","currency":"USD"},{"qty":250,"price":"$0.58264","currency":"USD"},{"qty":3000,"price":"$0.38700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cd2619326bd0a221bc4e0fac8c842fed.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional equivalent or replacement for SN74ABT126RGYR?","answer":"No pin-compatible direct replacement is listed. The SN74ABT2245DW is an 8-bit transceiver in a wider SOIC package. None are drop-in swaps; verify the bus architecture and voltage compatibility before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ABT126RGYR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ABT126RGYR 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}}