{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HC73E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HC73E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HC73E","factsUrl":"https://icboms.com/api/mcp/products/CD74HC73E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series CD74HC73E dual JK flip-flop, through-hole 14-DIP, negative-edge trigger, complementary outputs, 2-6 V supply, 60 MHz clock, 28 ns propagation delay.","salesMarkdown":"## Package and integration story The CD74HC73E comes in a 14-pin DIP (0.300-inch body) with a through-hole PDIP footprint — the same 0.100-inch pitch layout that has been a breadboard and perfboard staple for decades. The 7.62 mm row spacing means it drops into standard socket strips or wave-solder holes without a layout change. Two independent JK flip-flops in one package, each with its own clock, reset, and complementary outputs. The negative-edge trigger means the outputs change state on the falling edge of the clock — a detail that matters when you are interfacing to a bus that samples on the rising edge. ## Timing closure and supply rail margin Maximum propagation delay is 28 ns at 6 V supply with a 50 pF load. That is the timing number you budget for — the actual delay at 5 V will be slightly higher, and at 2 V it climbs further. For a 60 MHz clock (the rated maximum), the period is 16.7 ns, so the propagation delay eats most of the cycle; this part is not a candidate for pipelined high-speed logic at the clock ceiling. Supply range is 2 V to 6 V, which covers legacy 5 V TTL rails and 3.3 V mixed-voltage designs. The 4 µA quiescent current means it adds negligible standby draw in battery-backed or always-on logic sections. Output drive is 5.2 mA source and sink at the rated voltage — standard HC fan-out. Driving a high-capacitance bus or a long trace will stretch the rise time beyond the 28 ns propagation delay figure; keep the load at or below 50 pF to stay within the datasheet timing. ## Temperature grade and environment Rated for -55 °C to 125 °C ambient — the full military temperature range. That means it qualifies for avionics bay, engine compartment, or outdoor telecom enclosures where the commercial-grade 0-70 °C parts would drift out of spec. Input capacitance is 10 pF typical — a standard load for the driving gate. The reset function is asynchronous and active-low; unused reset pins should be tied to VCC to prevent noise triggers.","metaTitle":"TI CD74HC73E Dual JK Flip-Flop, 60 MHz, 14-DIP","metaDescription":"CD74HC73E dual JK flip-flop from TI, 60 MHz clock, 28 ns prop delay at 6 V, -55 to 125 °C. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"JK Type","Series":"74HC","Package":"Tube","Function":"Reset","Output Type":"Complementary","Trigger Type":"Negative Edge","Mounting Type":"Through Hole","Package / Case":"14-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":"14-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":"28ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.61","priceTiers":[{"qty":1,"price":"$0.61000","currency":"USD"},{"qty":10,"price":"$0.53800","currency":"USD"},{"qty":25,"price":"$0.50560","currency":"USD"},{"qty":100,"price":"$0.41280","currency":"USD"},{"qty":250,"price":"$0.38340","currency":"USD"},{"qty":500,"price":"$0.32628","currency":"USD"},{"qty":1000,"price":"$0.26103","currency":"USD"},{"qty":2500,"price":"$0.23656","currency":"USD"},{"qty":5000,"price":"$0.23086","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7bc36b41b002df932358a1387e7f6d6c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD74HC73E/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Texas Instruments provide for CD74HC73E?","answer":"The part is ROHS3 compliant per the lifecycle record. Texas Instruments provides a datasheet, RoHS certificate, and REACH declaration through their documentation portal — no UL or IEC certification is listed for this logic IC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HC73E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HC73E 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}}