{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AS74ADR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AS74ADR","canonicalUrl":"https://icboms.com/texas-instruments/SN74AS74ADR","factsUrl":"https://icboms.com/api/mcp/products/SN74AS74ADR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AS series D-type flip-flop, SN74AS74ADR, dual 1-bit, positive edge triggered, complementary outputs, set/reset, 105 MHz, 14-SOIC.","salesMarkdown":"## Dual D-type in the 74AS family — 105 MHz clock edge The SN74AS74ADR is a dual positive-edge-triggered D-type flip-flop from Texas Instruments' 74AS series, with independent set (preset) and reset inputs per flip-flop. Each of the two elements stores one bit, and the outputs are complementary — both Q and Q-bar are available on the 14-SOIC package. It clocks at 105 MHz, with a maximum propagation delay of 9 ns into a 50 pF load at 5 V supply. That 9 ns window governs the timing closure for the data-to-output path in a synchronous bus — the next stage must latch the data before the hold time expires, and this part gives the designer a tight but predictable 9 ns window at the nominal supply. ## Supply, temperature, and drive — the operating envelope The supply range is 4.5 V to 5.5 V, which is the standard 5 V ±10 % rail common in legacy TTL and mixed-voltage backplanes. The operating temperature is 0 °C to 70 °C — commercial grade, so this part is suited for indoor equipment, bench instrumentation, and telecom line cards that stay in a conditioned environment, not for an engine bay or outdoor cabinet. Quiescent current is 16 mA typical across both flip-flops, and the output stage can source 2 mA and sink 20 mA. The asymmetric drive — weak high, strong low — is characteristic of standard TTL outputs; the 2 mA source limit means the output rise time into a capacitive load will be slower than the fall time, which matters for bus timing when driving multiple inputs or long traces. ## Active production, ROHS3, and sourcing posture Texas Instruments lists the SN74AS74ADR as Active in its product lifecycle, and it carries ROHS3 compliance. It is supplied in a 14-pin SOIC package (body width 3.90 mm), in Tape & Reel or Cut Tape options. The surface-mount footprint is industry-standard for SOIC-14, so the PCB layout is shared with many other 74-series logic parts in the same package.","metaTitle":"TI SN74AS74ADR D-Type Flip-Flop, 105 MHz, 14-SOIC","metaDescription":"Texas Instruments SN74AS74ADR dual D-type flip-flop with set/reset, 105 MHz clock, 9 ns propagation delay at 5V. Active, ROHS3 compliant. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"74AS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"D-Type","Series":"74AS","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$1.45","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.45000","currency":"USD"},{"qty":10,"price":"$1.29800","currency":"USD"},{"qty":25,"price":"$1.23160","currency":"USD"},{"qty":100,"price":"$1.01180","currency":"USD"},{"qty":250,"price":"$0.94580","currency":"USD"},{"qty":500,"price":"$0.83580","currency":"USD"},{"qty":1000,"price":"$0.65985","currency":"USD"},{"qty":2500,"price":"$0.62250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/140a881ffa0c00c2db3bb6ebb87e7724.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for the SN74AS74ADR?","answer":"The SN74HCS74QBQARQ1 is a similar dual D-type flip-flop with set/reset and positive-edge triggering, but it belongs to the automotive-grade 74HC series (AEC-Q100, -40°C to 125°C) and has a 15 ns propagation delay at 6 V versus 9 ns at 5 V for the AS part. The pinout is the same 14-pin SOIC, so it drops into the same PCB footprint, but the supply range (2 V to 6 V) and temperature grade are different — verify the system's voltage and thermal requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AS74ADR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AS74ADR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}