{"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 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. 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. ROHS3 compliant, so it passes European and global RoHS requirements without exemption paperwork. 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":["Logic ICs"],"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","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,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74HC109N/alternatives.json"},"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":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}