{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ALS645AN","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ALS645AN","canonicalUrl":"https://icboms.com/texas-instruments/SN74ALS645AN","factsUrl":"https://icboms.com/api/mcp/products/SN74ALS645AN","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74ALS series transceiver, non-inverting, 3-state, SN74ALS645AN, 8-bit, 4.5V-5.5V supply, 15mA/24mA output, 20-DIP (0.300\", 7.62mm), through hole, tube.","salesMarkdown":"## 8-bit transceiver in 20-pin DIP — 74ALS family The SN74ALS645AN is an 8-bit non-inverting transceiver with 3-state outputs from Texas Instruments' 74ALS logic family. ## Through-hole DIP — board-fit for legacy and new designs Housed in a 20-pin DIP (0.300\", 7.62 mm) with through-hole mounting, the SN74ALS645AN is suited for breadboard prototyping, legacy board repair, or new designs where a DIP footprint is preferred. The supplier device package is 20-PDIP. The 74ALS series provides a balance of speed and power for 5 V bus interfaces.","metaTitle":"SN74ALS645AN 74ALS Transceiver, Non-Inverting, 3-State","metaDescription":"Texas Instruments SN74ALS645AN 8-bit transceiver, 4.5V-5.5V supply, 15mA/24mA output, 20-DIP. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":"74ALS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74ALS","Package":"Tube","Logic Type":"Transceiver, Non-Inverting","Output Type":"3-State","Mounting Type":"Through Hole","Package / Case":"20-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"1","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"20-PDIP","Current - Output High, Low":"15mA, 24mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.54","priceTiers":[{"qty":1,"price":"$2.54000","currency":"USD"},{"qty":10,"price":"$2.28400","currency":"USD"},{"qty":25,"price":"$2.15440","currency":"USD"},{"qty":100,"price":"$1.83560","currency":"USD"},{"qty":250,"price":"$1.72356","currency":"USD"},{"qty":500,"price":"$1.50812","currency":"USD"},{"qty":1000,"price":"$1.24958","currency":"USD"},{"qty":2500,"price":"$1.21950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9b537f323e43a7901538fbbb1336e851.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74ALS645AN/alternatives.json"},"ai":{"faq":[{"question":"Will the SN74ALS645AN drop into a board specified for the SN74LS645-1N?","answer":"The SN74LS645-1N is a 74LS-series transceiver in the same 20-pin DIP package with the same 8-bit non-inverting 3-state logic. Both parts operate from a 5 V supply and have a 0°C to 70°C temperature range. The 74ALS family offers lower power consumption than 74LS, but the pinout and function are identical — a direct drop-in replacement in most designs. Confirm the output current drive requirements against your load: the SN74ALS645AN delivers 15 mA high / 24 mA low, while the SN74LS645-1N is rated 15 mA high / 24 mA low as well."},{"question":"What compliance documentation does Texas Instruments provide for the SN74ALS645AN?","answer":"Texas Instruments provides ROHS3 compliance for the SN74ALS645AN. No UL, IEC, or other agency certifications are listed in the product record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ALS645AN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ALS645AN 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}}