{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HC109E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HC109E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HC109E","factsUrl":"https://icboms.com/api/mcp/products/CD74HC109E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series, JK Type flip-flop, CD74HC109E, dual 1-bit, positive edge triggered, complementary outputs, 60 MHz, 2V-6V supply, -55°C to 125°C, 16-DIP, through hole, tube.","salesMarkdown":"## Dual JK flip-flop in a 16-pin DIP — what it does and where it fits The Texas Instruments CD74HC109E is a dual JK flip-flop from the 74HC high-speed CMOS logic family. Each of the two elements stores one bit, triggered on the positive edge of the clock, with complementary Q and Q-not outputs. A set (preset) and reset input per flip-flop lets you force the output state independent of the clock. The part is built for through-hole assembly in a 16-pin DIP package (0.300\" body, 7.62 mm pitch), making it a drop-in fit for breadboards, prototype boards, and legacy PCB layouts that still use DIP footprints. Operating temperature range is -55°C to 125°C. Supply voltage spans 2V to 6V. Quiescent current is 4 µA. ## 60 MHz clock — timing margin for fast logic Maximum clock frequency is 60 MHz. Propagation delay is 31 ns at 6V with 50 pF load. ## Output drive and fan-out Each output can source or sink 5.2 mA, enough to drive one or two standard HC loads directly. For driving LEDs, relays, or long PCB traces, add a buffer or transistor stage. Input capacitance is 10 pF per input — light enough that a single HC gate can drive several flip-flops without signal degradation. ## Lifecycle and sourcing — still in active production The CD74HC109E is listed as Active with ROHS3 compliance.","metaTitle":"CD74HC109E JK Flip-Flop, 60 MHz, 2V-6V, 16-DIP","metaDescription":"CD74HC109E dual JK flip-flop, positive-edge triggered, complementary outputs. 60 MHz clock, 2V-6V supply, -55°C to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"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":"10 pF","Number of Elements":"2","Operating Temperature":"-55°C ~ 125°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":"31ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.83","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.83000","currency":"USD"},{"qty":10,"price":"$0.73300","currency":"USD"},{"qty":25,"price":"$0.68880","currency":"USD"},{"qty":100,"price":"$0.56220","currency":"USD"},{"qty":250,"price":"$0.52216","currency":"USD"},{"qty":500,"price":"$0.44440","currency":"USD"},{"qty":1000,"price":"$0.35552","currency":"USD"},{"qty":2500,"price":"$0.32219","currency":"USD"},{"qty":5000,"price":"$0.29997","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6206d46ce8d62152b14b228319c272bb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between CD74HC109E and SN74HC109N?","answer":"Both are dual JK flip-flops from the 74HC family with the same function and pinout. The CD74HC109E carries the 'E' suffix (Texas Instruments' through-hole DIP package code), while the SN74HC109N uses the 'N' suffix. Electrically they are identical; the difference is the manufacturer's package marking and ordering code. Either can be used as a drop-in replacement on the same PCB footprint."},{"question":"Can I use CD74HC109E as a replacement for SN74HC109N?","answer":"Yes, the CD74HC109E is functionally and pin-compatible with the SN74HC109N. Both are dual positive-edge-triggered JK flip-flops with set and reset, in a 16-pin DIP package. The only difference is the ordering suffix (E vs N), which reflects Texas Instruments' internal package code. Verify the temperature grade and supply range match your design — both cover -55°C to 125°C and 2V to 6V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HC109E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HC109E when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-13T22:22:54.682Z","lastPublished":"2026-07-13T22:22:54.682Z","indexable":true}}