{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS125AN","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS125AN","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS125AN","factsUrl":"https://icboms.com/api/mcp/products/SN74LS125AN","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LS series quad buffer, non-inverting, 3-state outputs, 14-DIP (0.300\", 7.62mm) through-hole package, 4.75V-5.25V supply, 0°C to 70°C operation.","salesMarkdown":"## 14-pin DIP buffer for bus isolation and signal buffering The SN74LS125AN packs four independent non-inverting buffers with 3-state outputs in a 14-pin through-hole DIP package (0.300\" body width, 7.62 mm pitch). Each buffer drives a single bit, giving you four isolated channels per IC for bus isolation, memory address buffering, or general-purpose signal fan-out on legacy 5 V TTL boards. ## Output drive and fan-out for TTL loads Each output sources 2.6 mA and sinks 24 mA at the rated supply range of 4.75 V to 5.25 V. That sink current drives up to 10 standard TTL loads per output — enough for a buffered address or data bus on a 5 V backplane without external line drivers. The 3-state control lets you float the outputs when the bus is owned by another device.","metaTitle":"SN74LS125AN 74LS Quad Buffer, 3-State, 14-DIP, Active","metaDescription":"Texas Instruments SN74LS125AN quad non-inverting buffer with 3-state outputs. 4.75V-5.25V supply, 2.6mA/24mA drive, 14-pin DIP.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Series":"74LS","Package":"Tube","Logic Type":"Buffer, Non-Inverting","Output Type":"3-State","Mounting Type":"Through Hole","Package / Case":"14-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Number of Elements":"4","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"14-PDIP","Current - Output High, Low":"2.6mA, 24mA","Number of Bits per Element":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9","priceTiers":[{"qty":1,"price":"$0.90000","currency":"USD"},{"qty":10,"price":"$0.80700","currency":"USD"},{"qty":25,"price":"$0.76600","currency":"USD"},{"qty":100,"price":"$0.62910","currency":"USD"},{"qty":250,"price":"$0.58804","currency":"USD"},{"qty":500,"price":"$0.51968","currency":"USD"},{"qty":1000,"price":"$0.41027","currency":"USD"},{"qty":2500,"price":"$0.38704","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6403b1d098d080a8dc324c36f013c665.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74LS125AN/alternatives.json"},"ai":{"faq":[{"question":"What is the SN74LS125AN used for?","answer":"It is a quad non-inverting buffer with 3-state outputs, used to isolate or drive digital signals on a 5 V bus. Typical applications include memory address buffering, data bus isolation, and general-purpose TTL signal fan-out in through-hole designs."},{"question":"Can the SN74LS125AN replace the SN74LS645-1N in a circuit?","answer":"No — the SN74LS645-1N is an 8-bit transceiver with bidirectional data flow and a different pinout. The SN74LS125AN is a quad buffer with unidirectional, non-inverting outputs. They are not drop-in replacements; a board redesign would be required to swap between them."},{"question":"What temperature range does the SN74LS125AN support?","answer":"It is rated for 0°C to 70°C ambient (commercial grade). This limits deployment to indoor, temperature-controlled environments — not suitable for automotive or industrial extended-temperature enclosures without active cooling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS125AN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS125AN 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}}