{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ALS645A-1N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ALS645A-1N","canonicalUrl":"https://icboms.com/texas-instruments/SN74ALS645A-1N","factsUrl":"https://icboms.com/api/mcp/products/SN74ALS645A-1N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74ALS series SN74ALS645A-1N, Transceiver, Non-Inverting, 3-State, 8-bit, 15mA/24mA output, 4.5V~5.5V, 20-DIP (0.300\", 7.62mm), Through Hole, 0°C to 70°C.","salesMarkdown":"## 8-bit bus transceiver for 5 V backplanes Output drive is rated at 15 mA sourcing and 24 mA sinking per channel. Supply range is 4.5 V to 5.5 V. Operating temperature is limited to 0°C to 70°C, so this part is intended for indoor, temperature-controlled environments — office equipment, benchtop instruments, and telecom racks with active cooling. It is not rated for industrial enclosures or outdoor deployment. ## Output drive and bus loading The 15 mA high-level and 24 mA low-level output current ratings define the drive capability. ## Lifecycle and compliance This is a key advantage for sustaining a BOM line that requires the through-hole DIP footprint — many 74ALS parts have migrated to surface-mount only, but this variant is still being manufactured. ROHS3 compliance is confirmed, covering the ten restricted substances plus the four phthalates. No separate lead-free conversion is needed; the part ships compliant for EU and global markets. ## Sourcing and availability Because the lifecycle is Active, there is no LTB risk and no need to stockpile against an obsolescence event — normal procurement cycles apply.","metaTitle":"SN74ALS645A-1N 74ALS 8-bit Transceiver, Non-Inverting","metaDescription":"SN74ALS645A-1N 8-bit non-inverting transceiver with 3-state outputs. 15mA/24mA drive, 4.5V-5.5V supply, 20-DIP, ROHS3 compliant. Active lifecycle.","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","stockQuantity":0,"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},"ai":{"faq":[{"question":"Is SN74ALS645A-1N RoHS compliant?","answer":"Yes, SN74ALS645A-1N is ROHS3 Compliant, covering all ten restricted substances plus the four phthalates."},{"question":"Can I substitute SN74ALS645A-1N with SN74ALS645A?","answer":"The base part SN74ALS645A shares the same logic function and 20-DIP footprint, but the -1N suffix indicates a specific speed grade and package variant. Verify the timing and output drive specs in the respective datasheets before substituting in a production BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ALS645A-1N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ALS645A-1N 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}}