{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC109N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC109N","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC109N","factsUrl":"https://icboms.com/api/mcp/products/SN74HC109N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series SN74HC109N, JK Type flip-flop, dual 1-bit, positive-edge triggered, complementary output, Set(Preset) and Reset, 60 MHz, 2V-6V, -40°C to 85°C, 16-DIP (0.300\", 7.62mm), through hole, 16-PDIP, tube.","salesMarkdown":"## Dual JK flip-flop with preset and clear — 16-pin DIP The Texas Instruments SN74HC109N is a dual JK flip-flop from the 74HC family, each element storing one bit. It triggers on the positive edge of the clock and provides complementary Q and Q̅ outputs. Both flip-flops have independent Set (Preset) and Reset inputs, letting you force the output state asynchronously — useful for initialisation or one-shot override in counter and register chains. Clock frequency is rated at 60 MHz, which gives comfortable margin for 8-bit and 16-bit microcontroller bus interfaces running at typical 8–48 MHz clock rates. Propagation delay is 30 ns max at 6 V supply with a 50 pF load, so timing closure in a 33 MHz synchronous bus is straightforward. Supply voltage spans 2 V to 6 V, covering 3.3 V and 5 V logic rails without a level translator. Quiescent current is just 4 µA, making it suitable for battery-backed or always-on logic where the flip-flop holds state while the rest of the board sleeps. ## Package and mounting — through-hole 16-DIP The SN74HC109N comes in a 16-pin plastic DIP (0.300\" body width, 7.62 mm pitch), through-hole mount. The supplier device package is 16-PDIP. It ships in a tube, which is the standard format for DIP parts — no reel or tray concerns for manual assembly or low-volume builds. Operating temperature range is -40°C to 85°C, rated for industrial environments — factory automation, motor drives, outdoor telecom cabinets, and HVAC controllers. The 74HC family is CMOS, so input capacitance is 3 pF per pin, and output drive is 5.2 mA sink and source at the rated supply. ## Lifecycle and sourcing The SN74HC109N is listed as Active in production. ROHS3 compliant, so it passes European and global RoHS requirements without exemption paperwork. For BOM planning, this part is a standard 74HC logic device — widely second-sourced across the industry. If you need a dual JK flip-flop in a 16-pin DIP, several manufacturers offer functionally equivalent parts. The 74HC family has long lifecycle visibility; stocking a five-year supply for a mature design is reasonable.","metaTitle":"SN74HC109N JK Flip-Flop, 60 MHz, 2V-6V, 16-PDIP","metaDescription":"TI SN74HC109N dual JK flip-flop, positive-edge triggered, complementary outputs, 60 MHz clock, 2V-6V supply, -40°C to 85°C, 16-PDIP.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"JK Type","Series":"74HC","Package":"Tube","Function":"Set(Preset) and Reset","Output Type":"Complementary","Trigger Type":"Positive Edge","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","Clock Frequency":"60 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Input Capacitance":"3 pF","Number of Elements":"2","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"16-PDIP","Current - Quiescent (Iq)":"4 µA","Current - Output High, Low":"5.2mA, 5.2mA","Number of Bits per Element":"1","Max Propagation Delay @ V, Max CL":"30ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.60000","currency":"USD"},{"qty":10,"price":"$0.52800","currency":"USD"},{"qty":25,"price":"$0.49600","currency":"USD"},{"qty":100,"price":"$0.40500","currency":"USD"},{"qty":250,"price":"$0.37616","currency":"USD"},{"qty":500,"price":"$0.32012","currency":"USD"},{"qty":1000,"price":"$0.25610","currency":"USD"},{"qty":2500,"price":"$0.23209","currency":"USD"},{"qty":5000,"price":"$0.22650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6bfb7d0d5ff9a93ca1a16391a777396a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SN74HC109N a direct replacement for 74LS109?","answer":"The SN74HC109N is a CMOS 74HC part, while the 74LS109 is a bipolar LS part. Both are dual JK flip-flops in 16-pin DIP with positive-edge triggering and complementary outputs. The HC version operates over a wider supply range (2 V to 6 V vs 4.75 V to 5.25 V for LS) and draws far less quiescent current (4 µA vs several mA). However, the HC output drive is lower (5.2 mA vs 8 mA for LS). In most 5 V logic systems the HC part will function as a drop-in replacement, but check the fan-out and noise margin against your specific load."},{"question":"Can I use SN74HC109N at 3.3V?","answer":"Yes. The SN74HC109N is specified for a supply range of 2 V to 6 V, so 3.3 V is well within the operating window. At 3.3 V the propagation delay will be slightly longer than the 30 ns figure quoted at 6 V, but the part will function correctly. Ensure the input signals are within the supply rails."},{"question":"Does SN74HC109N come in tube packaging?","answer":"Yes, the SN74HC109N ships in a tube. The package type field lists 'Tube' as the standard shipping medium for this DIP part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC109N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC109N 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}}