{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCT645DWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCT645DWR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCT645DWR","factsUrl":"https://icboms.com/api/mcp/products/SN74HCT645DWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series SN74HCT645DWR, Transceiver, Non-Inverting, 1 Element, 8 bits per element, 3-State Output, 4.5V to 5.5V Supply, 6mA/6mA Output Current, –40°C to 85°C, 20-SOIC Package.","salesMarkdown":"## 8-bit bus transceiver in the 74HCT family The SN74HCT645DWR: The wide-body 20-SOIC package (7.50mm width) matches the standard footprint for 20-pin SOIC bus transceivers. ## Supply voltage: 5V only — not for 3.3V rails The supply range is 4.5V to 5.5V, so this part is strictly for 5V logic systems. It cannot be used on a 3.3V bus without a level translator. If your design runs on 3.3V, look at the 74LVTH family (e.g., SN74LVTH16245A) which operates down to 2.7V. ## Temperature grade: industrial range Not qualified for full military range, but the industrial grade covers most commercial and light-industrial applications.","metaTitle":"SN74HCT645DWR 74HCT Transceiver, 5.5V 20-SOIC","metaDescription":"Texas Instruments SN74HCT645DWR 8-bit non-inverting transceiver with 3-state outputs. 4.5V–5.5V supply, 6mA drive, –40°C to 85°C.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74HCT","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"Transceiver, Non-Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"20-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-SOIC","Current - Output High, Low":"6mA, 6mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.79","priceTiers":[{"qty":1,"price":"$1.79000","currency":"USD"},{"qty":10,"price":"$1.61200","currency":"USD"},{"qty":25,"price":"$1.52120","currency":"USD"},{"qty":100,"price":"$1.29600","currency":"USD"},{"qty":250,"price":"$1.21688","currency":"USD"},{"qty":500,"price":"$1.06476","currency":"USD"},{"qty":1000,"price":"$0.88224","currency":"USD"},{"qty":2000,"price":"$0.86100","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/522650456fe4da48353ccbb2c155a252.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74HCT645DWR/alternatives.json"},"ai":{"faq":[{"question":"Can SN74HCT645DWR work with 3.3V logic?","answer":"No. The supply voltage range is 4.5V to 5.5V, so it is designed for 5V systems only. For 3.3V operation, consider the 74LVTH family such as SN74LVTH16245ADGVR."},{"question":"What are the equivalents for SN74HCT645DWR?","answer":"Functional equivalents in the same 8-bit transceiver class include the SN74ABT2245DW (32mA drive, 5V supply) and the SN74LVTH16245ADGVR (32mA drive, 2.7V to 3.6V supply)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCT645DWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCT645DWR 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}}