{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ACT564N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ACT564N","canonicalUrl":"https://icboms.com/texas-instruments/SN74ACT564N","factsUrl":"https://icboms.com/api/mcp/products/SN74ACT564N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74ACT series D-Type flip-flop, SN74ACT564N, 8-bit, positive edge triggered, tri-state inverted outputs, 90 MHz clock, 10.5 ns propagation delay, 4.5-5.5 V supply, -40°C to 85°C, 20-DIP through-hole package, tube.","salesMarkdown":"## Through-hole 8-bit register with inverted bus drive The SN74ACT564N is an 8-bit D-type flip-flop from the 74ACT family, clocked on the positive edge and delivering inverted, tri-state outputs. It is a standard-function register — no set or reset pins — intended for bus-oriented storage where the output polarity is inverted relative to the data input. Housed in a 20-pin DIP (0.300\" body width, 7.62 mm row spacing), it is a through-hole part for boards where wave solder or hand assembly is preferred over reflow. The 20-PDIP footprint is a legacy standard — still common in industrial control, test equipment, and retrofit designs that avoid surface-mount rework. ## Clock speed and propagation delay — the timing budget Rated for a 90 MHz maximum clock frequency, this flip-flop can capture data at a 90 MHz toggle rate — fast enough for most parallel bus interfaces in 5 V systems. The propagation delay is 10.5 ns max at 5 V into a 50 pF load, which sets the data-to-output settling time after the clock edge. That 10.5 ns window must fit within the bus cycle timing; if the downstream latch setup time plus trace delay exceeds the clock period minus 10.5 ns, the data will not be valid on time. The 24 mA output drive (both source and sink) gives enough current to drive a heavily loaded bus or a bank of LEDs directly, but the 4 µA quiescent current is negligible for power budgeting. ## Temperature grade and compliance Texas Instruments lists this part as Active in production and ROHS3 Compliant.","metaTitle":"TI SN74ACT564N 74ACT D-Type Flip-Flop, 90 MHz, 20-DIP","metaDescription":"Texas Instruments SN74ACT564N D-type flip-flop, 8-bit, 90 MHz clock, 10.5 ns delay, tri-state inverted outputs, 4.5-5.5 V, -40°C to 85°C, 20-DIP.","metaKeywords":null},"attributes":{"series":"74ACT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"D-Type","Series":"74ACT","Package":"Tube","Function":"Standard","Output Type":"Tri-State, Inverted","Trigger Type":"Positive Edge","Mounting Type":"Through Hole","Package / Case":"20-DIP (0.300\\\", 7.62mm)","Clock Frequency":"90 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Input Capacitance":"4.5 pF","Number of Elements":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-PDIP","Current - Quiescent (Iq)":"4 µA","Current - Output High, Low":"24mA, 24mA","Number of Bits per Element":"8","Max Propagation Delay @ V, Max CL":"10.5ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.99","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.99000","currency":"USD"},{"qty":10,"price":"$0.88500","currency":"USD"},{"qty":25,"price":"$0.84000","currency":"USD"},{"qty":100,"price":"$0.69000","currency":"USD"},{"qty":250,"price":"$0.64496","currency":"USD"},{"qty":500,"price":"$0.56996","currency":"USD"},{"qty":1000,"price":"$0.44997","currency":"USD"},{"qty":2500,"price":"$0.42450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4761b5efa0a03e1641ed26d2bb35b88b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for the SN74ACT564N?","answer":"The SN74LVC574APWT is a surface-mount (TSSOP) 8-bit D-type flip-flop with tri-state outputs, but it is non-inverting and operates at 1.65-3.6 V, not 5 V. The SN74ACT564N's inverted outputs and 5 V supply are unique; the LVC574 will not drop in without a board spin and voltage rail change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ACT564N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ACT564N 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}}