{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AC573N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AC573N","canonicalUrl":"https://icboms.com/texas-instruments/SN74AC573N","factsUrl":"https://icboms.com/api/mcp/products/SN74AC573N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74AC573N, 74AC series, D-Type Transparent Latch, Octal (8:8), Tri-State outputs, Through Hole 20-DIP (0.300\", 7.62mm), 2V ~ 6V supply, 2.5ns propagation delay, 24mA output drive, -40°C ~ 85°C.","salesMarkdown":"## Octal transparent latch for high-speed bus isolation The Texas Instruments SN74AC573N is an octal D-type transparent latch with tri-state outputs in a 20-pin DIP package. When the latch-enable (LE) input is high, data at the D inputs flows through to the Q outputs; when LE goes low, the last data state is latched. The output-enable (OE) bar puts all eight outputs into high-impedance state for bus isolation, letting multiple devices share a data bus without contention. ## 2.5ns propagation delay — what it buys on the bus The 74FCT573APC is a functional peer with the same pinout and octal latch function, but its 8.5ns propagation delay is more than three times slower. For a drop-in upgrade that keeps the same 20-DIP footprint and tri-state bus architecture, the 74AC family is the faster, wider-temperature choice. ## Active lifecycle — no near-term obsolescence ROHS3 compliance is confirmed, so the part meets current EU and global restrictions on hazardous substances. No special handling or exemption paperwork is needed for European-market equipment. ## Through-hole 20-DIP — board fit and handling For prototyping or rework, the DIP package is socket-friendly — no hot-air or reflow station needed. In production, wave-solder or selective-solder processes handle the through-hole leads.","metaTitle":"SN74AC573N Octal D Latch, 2.5ns, 24mA, 20-DIP","metaDescription":"TI SN74AC573N octal D-type transparent latch with tri-state outputs. 2.5ns propagation delay, 24mA drive, 2-6V supply, -40 to 85°C. Active production.","metaKeywords":null},"attributes":{"series":"74AC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74AC","Circuit":"8:8","Package":"Tube","Logic Type":"D-Type Transparent Latch","Output Type":"Tri-State","Mounting Type":"Through Hole","Package / Case":"20-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Independent Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-PDIP","Delay Time - Propagation":"2.5ns","Current - Output High, Low":"24mA, 24mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.98","priceTiers":[{"qty":1,"price":"$0.98000","currency":"USD"},{"qty":10,"price":"$0.87200","currency":"USD"},{"qty":25,"price":"$0.82800","currency":"USD"},{"qty":100,"price":"$0.68020","currency":"USD"},{"qty":250,"price":"$0.63584","currency":"USD"},{"qty":500,"price":"$0.56190","currency":"USD"},{"qty":1000,"price":"$0.44361","currency":"USD"},{"qty":2500,"price":"$0.41850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/194100d5b29b4b11113d2a461f025df7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74AC573N/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SN74AC573N and SN74HC573N?","answer":"The key difference is speed: the SN74AC573N has a 2.5ns propagation delay, while a typical 74HC573 runs 10-15ns. The 74AC family also offers higher output drive (24mA vs ~4mA for HC at 5V) and operates across the same 2V-6V supply range. Both are pin-compatible octal latches in 20-DIP, but the AC version is significantly faster and can drive more load."},{"question":"What is the equivalent replacement for SN74AC573N?","answer":"The 74FCT573APC is a functional equivalent with the same octal latch function and 20-DIP footprint, but it has a slower 8.5ns propagation delay and a commercial 0°C to 70°C temperature range only. For industrial-temperature designs (-40°C to 85°C), the SN74AC573N is the correct choice — the 74FCT573APC cannot substitute in that environment."},{"question":"What logic family is SN74AC573N compatible with?","answer":"The 74AC logic family is compatible with both 5V TTL and 3.3V CMOS logic levels. Input thresholds are TTL-compatible (VIL max 0.8V, VIH min 2V at 5V supply), so it can interface directly with 74LS, 74HCT, and 74FCT outputs. Outputs swing rail-to-rail, making it suitable for driving CMOS inputs on microcontrollers, FPGAs, or other 74AC/74ACT devices."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AC573N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AC573N 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}}