{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HCT377E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HCT377E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HCT377E","factsUrl":"https://icboms.com/api/mcp/products/CD74HCT377E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series D-type flip-flop, 8-bit, standard function, non-inverted output, positive-edge triggered, 20-DIP (0.300\", 7.62 mm) through-hole package, 50 MHz clock, 38 ns propagation delay at 4.5 V, 50 pF.","salesMarkdown":"The CD74HCT377E is supplied in a 20-pin PDIP (0.300-inch body, 7.62 mm width) through-hole package. The 0.100-inch row spacing and 0.100-inch pin pitch match standard breadboard and prototyping grids, but the 0.300-inch body width requires a DIP-20 socket or plated through-hole pattern with 0.300-inch row centers — not the narrower 0.200-inch footprint used by some 20-pin SOIC or SSOP parts. The 10 pF input capacitance per pin is typical for HCT logic; no special decoupling beyond a 0.1 µF ceramic per supply pin is required for the 50 MHz clock rate. ## Timing and drive for 5 V backplanes With a maximum clock frequency of 50 MHz and a propagation delay of 38 ns at 4.5 V with a 50 pF load, this flip-flop is sized for bus-register and address-latch applications in 5 V TTL systems. The 38 ns delay includes the output rise time into the load; at 50 MHz the period is 20 ns, so the device cannot toggle at full clock rate with the output driving a heavy bus — the delay limits the usable data rate to roughly 26 MHz when driving a 50 pF trace. The 4 mA source and 4 mA sink output drive provides a fan-out of 10 LSTTL loads (each drawing 0.4 mA) with adequate noise margin. For longer backplane traces or higher capacitive loads, a bus driver or buffer should be inserted between the flip-flop output and the bus. The 125°C upper limit is the junction temperature; the PDIP package's thermal resistance (typically 60-80°C/W in still air) means the device can dissipate about 0.5 W before exceeding the 125°C limit at 25°C ambient. ROHS3 compliance means no exemptions for lead in solder or other restricted substances — the part can be used in EU, UK, and global BOMs without exemption tracking.","metaTitle":"Texas Instruments CD74HCT377E D-Type Flip-Flop, 8-Bit","metaDescription":"CD74HCT377E D-type flip-flop, 8-bit, non-inverted output, 50 MHz clock, 38 ns prop delay at 4.5V. Active, ROHS3, -55°C to 125°C. Quoted to order.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"D-Type","Series":"74HCT","Package":"Tube","Function":"Standard","Output Type":"Non-Inverted","Trigger Type":"Positive Edge","Mounting Type":"Through Hole","Package / Case":"20-DIP (0.300\\\", 7.62mm)","Clock Frequency":"50 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Input Capacitance":"10 pF","Number of Elements":"1","Operating Temperature":"-55°C ~ 125°C (TA)","Supplier Device Package":"20-PDIP","Current - Quiescent (Iq)":"8 µA","Current - Output High, Low":"4mA, 4mA","Number of Bits per Element":"8","Max Propagation Delay @ V, Max CL":"38ns @ 4.5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.98","priceTiers":[{"qty":1,"price":"$0.98000","currency":"USD"},{"qty":10,"price":"$0.86100","currency":"USD"},{"qty":25,"price":"$0.80840","currency":"USD"},{"qty":100,"price":"$0.65970","currency":"USD"},{"qty":250,"price":"$0.61280","currency":"USD"},{"qty":500,"price":"$0.52152","currency":"USD"},{"qty":1000,"price":"$0.41722","currency":"USD"},{"qty":2500,"price":"$0.37810","currency":"USD"},{"qty":5000,"price":"$0.36900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/50ad879adb3206b0b86983db9e3bfc6e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD74HCT377E/alternatives.json"},"ai":{"faq":[{"question":"How can I order CD74HCT377E or check current pricing and availability?","answer":"The CD74HCT377E is an active Texas Instruments part. Submit an RFQ through this listing; the order is sourced through authorized and independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HCT377E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HCT377E 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}}