{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AC574PWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AC574PWR","canonicalUrl":"https://icboms.com/texas-instruments/SN74AC574PWR","factsUrl":"https://icboms.com/api/mcp/products/SN74AC574PWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AC series octal D-type flip-flop, SN74AC574PWR, 153 MHz clock frequency, 2-6 V supply, tri-state non-inverted outputs, 20-TSSOP package.","salesMarkdown":"The SN74AC574PWR comes in a 20-TSSOP package (4.40 mm width, 0.65 mm pitch) — a hand-solderable footprint if you have a fine tip and steady hands, though a hot-air station makes it easier. The 0.65 mm pitch is forgiving enough for a two-layer prototype board with careful trace routing. Surface-mount only — no through-hole variant in this series. The 20-TSSOP supplier device package is the same as the package/case, so the footprint is consistent across the TI 74AC octal D-type line. ## Clock speed and timing margin Rated for 153 MHz clock frequency — that is the maximum toggle rate for the flip-flop itself. The real throughput in a bus application depends on the propagation delay and the output loading. Max propagation delay is 9.5 ns at 5 V supply with a 50 pF load. That means the data at the output is valid 9.5 ns after the clock edge — budget this into your setup/hold timing analysis, especially if the downstream device has tight hold requirements. The 24 mA output drive (both high and low) gives you enough current to drive a 50 pF bus trace or a short ribbon cable without external buffers. For longer runs or higher fan-out, the rise time will degrade — keep the trace length under 6 inches at 153 MHz. ## Supply voltage and temperature envelope Operates from 2 V to 6 V — this is the full 74AC supply range. At 3.3 V it runs fine; at 5 V it hits the rated 153 MHz. The 4 µA quiescent current is negligible for battery-powered designs that spend most of their time in standby. This covers most factory-floor and outdoor telecom enclosures. RoHS3 compliant (2011/65/EU + 2015/863). No REACH or UL documentation is on the record, but TI typically provides REACH declarations on request.","metaTitle":"SN74AC574PWR 74AC D-Type Flip-Flop, 153 MHz, 20-TSSOP","metaDescription":"Texas Instruments SN74AC574PWR octal D-type flip-flop, 153 MHz clock, 2-6 V supply, 9.5 ns propagation delay at 5V, 50pF. Active production, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":"74AC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"D-Type","Series":"74AC","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$0.88","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.88000","currency":"USD"},{"qty":10,"price":"$0.78500","currency":"USD"},{"qty":25,"price":"$0.74480","currency":"USD"},{"qty":100,"price":"$0.61190","currency":"USD"},{"qty":250,"price":"$0.57204","currency":"USD"},{"qty":500,"price":"$0.50552","currency":"USD"},{"qty":1000,"price":"$0.39909","currency":"USD"},{"qty":2000,"price":"$0.37650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/42a92c01edc7b7762b42152400effa1c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to SN74AC574PWR?","answer":"The SN74LVC574APWT is the closest pin-compatible peer — same D-type octal flip-flop with tri-state outputs, same positive-edge trigger, same 20-TSSOP footprint. The LVC also has a faster propagation delay (6.8 ns at 3.3 V vs 9.5 ns at 5 V) but lower output drive (24 mA on both). If your board is 3.3 V only, the LVC is a drop-in replacement; if you need 5 V operation, stick with the AC."},{"question":"Will SN74AC574PWR drop into a board designed for SN74LVC574APWT without rewiring?","answer":"Yes — same 20-TSSOP package, same pinout for the octal D-type with tri-state outputs. The LVC part is limited to 3.6 V max. If your board runs at 3.3 V, the AC part is a direct swap; if it runs at 5 V, the LVC part will not work."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AC574PWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AC574PWR 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}}