{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AS74AD","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AS74AD","canonicalUrl":"https://icboms.com/texas-instruments/SN74AS74AD","factsUrl":"https://icboms.com/api/mcp/products/SN74AS74AD","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AS series SN74AS74AD D-type flip-flop, dual 1-bit, positive edge triggered, complementary outputs, 105 MHz clock, 14-SOIC surface mount, tube package.","salesMarkdown":"The SN74AS74AD is a dual positive-edge-triggered D-type flip-flop from Texas Instruments' 74AS series, with set and reset presets on each element. Each of the two flip-flops stores one bit, presenting complementary outputs (Q and Q̅) to the downstream logic. ## Speed and propagation delay — timing margin for bus design Maximum clock frequency is 105 MHz, which sets the upper limit for the data toggle rate. The max propagation delay is 9 ns at 5 V supply with a 50 pF load — this delay from clock edge to valid output is the timing budget the receiving device must accommodate. For a 105 MHz clock (period ~9.5 ns), the 9 ns propagation delay consumes nearly the entire cycle, so the part is best suited for moderate-speed bus applications where the clock-to-output delay is not the critical path. ## Power budget and output drive capability Output drive capability is asymmetric: 2 mA source (output high) and 20 mA sink (output low). The 20 mA sink current is sufficient to drive a standard TTL load or a low-power LED indicator, but the 2 mA source limit means the high-level output cannot drive heavy loads directly — a buffer or pull-up resistor may be needed for fan-out beyond a few gates. ## Supply and temperature operating envelope The 5 V supply is typical for legacy TTL and 74AS logic families.","metaTitle":"SN74AS74AD Texas Instruments D-Type Flip-Flop, 105 MHz","metaDescription":"Active-production SN74AS74AD dual D-type flip-flop from TI. 105 MHz clock, 9 ns propagation delay at 5V, complementary outputs, 14-SOIC. ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74AS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"D-Type","Series":"74AS","Package":"Tube","Function":"Set(Preset) and Reset","Output Type":"Complementary","Trigger Type":"Positive Edge","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","Clock Frequency":"105 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"2","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"14-SOIC","Current - Quiescent (Iq)":"16 mA","Current - Output High, Low":"2mA, 20mA","Number of Bits per Element":"1","Max Propagation Delay @ V, Max CL":"9ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.74","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.74000","currency":"USD"},{"qty":10,"price":"$1.55700","currency":"USD"},{"qty":25,"price":"$1.47800","currency":"USD"},{"qty":100,"price":"$1.21410","currency":"USD"},{"qty":250,"price":"$1.13496","currency":"USD"},{"qty":500,"price":"$1.00298","currency":"USD"},{"qty":1000,"price":"$0.79182","currency":"USD"},{"qty":2500,"price":"$0.74700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/140a881ffa0c00c2db3bb6ebb87e7724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for SN74AS74AD?","answer":"The SN74HCS74QBQARQ1 is a functional peer from the same D-type flip-flop class, but it is an automotive-grade (AEC-Q100) part from the 74HC series with a 2.0 V minimum supply and a wider temperature range (-40°C to 125°C). Its propagation delay is 15 ns at 6 V, 50 pF — slower than the 9 ns of the SN74AS74AD at 5 V. The packages differ (the peer is in a different tape-and-reel format), so a direct drop-in without board layout review is not guaranteed."},{"question":"What compliance documentation does Texas Instruments provide for SN74AS74AD?","answer":"Texas Instruments provides ROHS3 compliance for the SN74AS74AD."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AS74AD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AS74AD 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}}