{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCT74PW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCT74PW","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCT74PW","factsUrl":"https://icboms.com/api/mcp/products/SN74HCT74PW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series SN74HCT74PW D-type flip-flop, dual 1-bit, positive edge triggered, complementary outputs, 14-TSSOP package, 46 MHz clock frequency, 4.5-5.5V supply.","salesMarkdown":"## 46 MHz clock ceiling, 25 ns propagation delay — the timing budget anchor The SN74HCT74PW is a dual D-type flip-flop from TI's 74HCT logic family, with set and reset inputs and complementary outputs. Its 46 MHz maximum clock frequency sets the upper data-rate limit for the flip-flop stage — above that the internal setup/hold window closes and the output becomes metastable. Propagation delay is 25 ns max at 5.5 V supply with a 50 pF load. That 25 ns is the time from clock edge to valid Q output; it adds directly to the combinational logic delay in the path, so the total timing budget for the downstream register must accommodate it. ## Supply rails and temperature — 4.5-5.5 V, -40 to 85 °C The supply voltage range is 4.5 V to 5.5 V — a tight 5 V ±10 % window. This is a 5 V-only part; it does not run at 3.3 V. The 74HCT family is TTL-compatible on the input thresholds, so it interfaces directly with 5 V TTL logic without external level translation. Operating temperature spans -40 °C to 85 °C (TA), the standard industrial range. The 14-TSSOP package (4.40 mm width, 0.173\" body) is a fine-pitch surface-mount footprint — the 0.65 mm lead pitch demands careful solder-paste stencil design for reliable reflow. ## Output drive and quiescent draw — 4 mA per pin, 4 µA idle Each output sources or sinks 4 mA (I_OH / I_OL). That is enough to drive a single standard TTL load or a low-power LED, but not a high-fan-out bus. For heavier loads, buffer the output with a line driver or use a higher-drive logic family like 74LVC. Quiescent current is 4 µA typical — negligible in a battery-powered design that spends most of its time in static logic states. The input capacitance is 3 pF per pin, so the dynamic power scales with the switching frequency and the number of toggling inputs.","metaTitle":"SN74HCT74PW Texas Instruments D-Type Flip-Flop, 46 MHz","metaDescription":"SN74HCT74PW dual D-type flip-flop from TI 74HCT series. Positive-edge triggered, 4.5-5.5V supply, 25ns propagation delay at 5.5V.","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":"Set(Preset) and Reset","Output Type":"Complementary","Trigger Type":"Positive Edge","Mounting Type":"Surface Mount","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","Clock Frequency":"46 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Input Capacitance":"3 pF","Number of Elements":"2","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"14-TSSOP","Current - Quiescent (Iq)":"4 µA","Current - Output High, Low":"4mA, 4mA","Number of Bits per Element":"1","Max Propagation Delay @ V, Max CL":"25ns @ 5.5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.16","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.16000","currency":"USD"},{"qty":10,"price":"$1.03500","currency":"USD"},{"qty":25,"price":"$0.98240","currency":"USD"},{"qty":100,"price":"$0.80700","currency":"USD"},{"qty":250,"price":"$0.75436","currency":"USD"},{"qty":500,"price":"$0.66664","currency":"USD"},{"qty":1000,"price":"$0.52629","currency":"USD"},{"qty":2500,"price":"$0.49650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d66abac651157e70bd7eba2c6418a768.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between 74HCT and 74HC logic families?","answer":"The 74HCT family has TTL-compatible input thresholds (0.8 V low, 2.0 V high at 5 V), while 74HC uses CMOS thresholds (30 % and 70 % of VCC). This means 74HCT can be driven directly by 5 V TTL outputs without a pull-up resistor. 74HC requires CMOS-level inputs. Both families operate from 2 V to 6 V, but 74HCT is typically specified at 5 V ±10 %."},{"question":"Can SN74HCT74PW be used in a 5V system?","answer":"Yes. The SN74HCT74PW is designed for 4.5 V to 5.5 V supply, making it a natural fit for 5 V systems. The TTL-compatible inputs mean it accepts standard 5 V TTL logic levels directly. The propagation delay of 25 ns at 5.5 V is the timing reference for the 5 V rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCT74PW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCT74PW when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}