{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"74HCT109D,652","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"74HCT109D652","canonicalUrl":"https://icboms.com/nxp/74HCT109D652","factsUrl":"https://icboms.com/api/mcp/products/74HCT109D%2C652","rawCanonicalId":null},"summary":{"shortDescription":"Nexperia 74HCT109D,652 dual JK flip-flop, positive-edge triggered, 55 MHz clock frequency, 4.5 V to 5.5 V supply, complementary outputs, set and reset, -40 to 125 °C, 16-SOIC package.","salesMarkdown":"## 55 MHz clock and 35 ns propagation delay The 55 MHz maximum clock frequency sets the upper counting or data-shifting rate for a synchronous design. The 35 ns max propagation delay (measured at 6 V supply and 50 pF load) means this part fits moderate-speed control and interface logic. ## Package and footprint Supplied in a 16-pin SOIC package with 3.90 mm body width (supplier device package 16-SO). Surface-mount assembly compatible with standard reflow profiles. ## Sourcing and lifecycle Nexperia continues to manufacture this part, so there is no last-time-buy pressure. It is available through independent distribution and can be sourced to order against an RFQ.","metaTitle":"Nexperia 74HCT109D,652 Dual JK Flip-Flop, 55 MHz, SOIC-16","metaDescription":"74HCT109D,652 dual JK flip-flop with set and reset. 55 MHz clock, 4.5-5.5 V supply, -40 to 125 °C. Active production.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"JK Type","Series":"74HCT","Package":"Bulk","Function":"Set(Preset) and Reset","Output Type":"Complementary","Trigger Type":"Positive Edge","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Clock Frequency":"55 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Input Capacitance":"3.5 pF","Number of Elements":"2","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"16-SO","Current - Quiescent (Iq)":"4 µA","Current - Output High, Low":"4mA, 4mA","Number of Bits per Element":"1","Max Propagation Delay @ V, Max CL":"35ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2","stockQuantity":0,"priceTiers":[{"qty":1528,"price":"$0.20000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2c1489a1f7e0097320822e79304db573.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does 74HCT109D compare to 74HC109?","answer":"The 74HCT109 uses TTL-compatible input thresholds (VIL max 0.8 V, VIH min 2.0 V), while the 74HC109 uses CMOS thresholds (0.3×VCC and 0.7×VCC). At 5 V supply, the HCT variant can be driven directly by 5 V TTL logic or by 3.3 V logic with adequate margin, whereas the HC variant requires a full CMOS-level drive. Both are pin-compatible and have the same 55 MHz clock speed and 35 ns propagation delay at 6 V. Choose HCT when mixing logic families; choose HC for pure CMOS systems."},{"question":"Is 74HCT109D a TTL or CMOS flip-flop?","answer":"It is a CMOS flip-flop (74HCT family) with TTL-compatible input thresholds. The output drive is CMOS-level (rail-to-rail) but the inputs are designed to recognise TTL logic levels, making it a drop-in for 5 V TTL systems."},{"question":"What is the recommended replacement for 74HCT109D if obsolete?","answer":"No replacement is needed — the part is active. If a second source is required, any 74HCT109 in a 16-SOIC package from another manufacturer (e.g., TI, ON Semiconductor) is pin-compatible and functionally identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/74HCT109D652","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/74HCT109D652 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}}