{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AC574PW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AC574PW","canonicalUrl":"https://icboms.com/texas-instruments/SN74AC574PW","factsUrl":"https://icboms.com/api/mcp/products/SN74AC574PW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AC series, SN74AC574PW, D-Type flip-flop, 8-bit, positive edge trigger, tri-state non-inverted outputs, 153 MHz clock, 2V-6V supply, 20-TSSOP, -40 to 85°C.","salesMarkdown":"## 8-bit D-type flip-flop for high-speed bus and register applications The Texas Instruments SN74AC574PW is an 8-bit D-type flip-flop from the 74AC series. It captures data on the positive edge of the clock and presents it through tri-state, non-inverted outputs. The part operates from a 2V to 6V supply and is rated over -40°C to 85°C. With a maximum clock frequency of 153 MHz and a propagation delay of 9.5 ns at 5V and 50 pF load, this flip-flop suits high-speed data paths where timing margin matters. The 24 mA output drive (both high and low) provides enough fan-out for multiple CMOS or TTL loads without external buffers. ## 153 MHz clock and 9.5 ns delay — what they mean for the bus The 153 MHz clock rating is the maximum toggle frequency. The 9.5 ns propagation delay at 5V is the time from clock edge to output valid. The 4 µA quiescent current keeps static power negligible, important for power-budgeted boards. The 4.5 pF input capacitance per pin is low enough that clock-line loading from eight flip-flop inputs is manageable without a dedicated clock buffer. ## Active production — no obsolescence risk for new designs The SN74AC574PW is listed as Active with a ROHS3 compliance status. That means TI continues to manufacture it, and there is no last-time-buy or end-of-life notice on this part. For a BOM line, this is a safe choice for both prototype and production builds — no supply discontinuity expected. ## 20-TSSOP package — board footprint and assembly Housed in a 20-TSSOP (4.40 mm wide, 0.173\" pitch) surface-mount package, this part fits standard SMT assembly lines. The supplier device package is 20-TSSOP.","metaTitle":"SN74AC574PW 74AC D-Type Flip-Flop, 153 MHz, 20-TSSOP","metaDescription":"SN74AC574PW 8-bit D-type flip-flop from the 74AC family. 153 MHz clock, 9.5 ns prop delay at 5V, 24 mA output drive, industrial temp -40 to 85°C.","metaKeywords":null},"attributes":{"series":"74AC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"D-Type","Series":"74AC","Package":"Tube","Function":"Standard","Output Type":"Tri-State, Non-Inverted","Trigger Type":"Positive Edge","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Clock Frequency":"153 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Input Capacitance":"4.5 pF","Number of Elements":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-TSSOP","Current - Quiescent (Iq)":"4 µA","Current - Output High, Low":"24mA, 24mA","Number of Bits per Element":"8","Max Propagation Delay @ V, Max CL":"9.5ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.14000","currency":"USD"},{"qty":10,"price":"$1.01900","currency":"USD"},{"qty":25,"price":"$0.96760","currency":"USD"},{"qty":100,"price":"$0.79480","currency":"USD"},{"qty":250,"price":"$0.74296","currency":"USD"},{"qty":500,"price":"$0.65656","currency":"USD"},{"qty":1000,"price":"$0.51834","currency":"USD"},{"qty":2500,"price":"$0.48900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/42a92c01edc7b7762b42152400effa1c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum clock frequency of SN74AC574PW?","answer":"The maximum clock frequency is 153 MHz. This is the toggle rate the flip-flop can sustain; for a design running at 100 MHz, there is ample margin."},{"question":"What is the propagation delay of SN74AC574PW?","answer":"The maximum propagation delay is 9.5 ns at 5V supply with a 50 pF load. At 3.3V the delay will be slightly longer, typical for the 74AC family."},{"question":"What is the equivalent of SN74AC574PW?","answer":"A functional equivalent is the 74F374SCX-NS from the 74F series, which also offers 8-bit D-type, positive edge trigger, and tri-state outputs. However, the 74F374 has a lower maximum clock (140 MHz vs 153 MHz), a narrower supply range (4.5V only), and a commercial temperature range (0°C to 70°C) — so the SN74AC574PW is a better fit for industrial or mixed-voltage designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AC574PW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AC574PW 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}}