{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"74HCT240DB,112","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"74HCT240DB112","canonicalUrl":"https://icboms.com/nxp/74HCT240DB112","factsUrl":"https://icboms.com/api/mcp/products/74HCT240DB%2C112","rawCanonicalId":null},"summary":{"shortDescription":"Nexperia 74HCT, 74HCT240DB,112, Buffer/Inverting 3-State, 4.5V~5.5V supply, -40°C~125°C, 20-SSOP.","salesMarkdown":"## Dual inverting 3-state buffer for 5 V bus isolation The Nexperia 74HCT240DB,112 is a dual inverting buffer with 3-state outputs, organized as two elements of four bits each. It is designed for 5 V logic systems where bus isolation, signal inversion, or line driving is needed — common in industrial control, motor drives, and telecom backplanes that still run on a 5 V rail. The HCT family is pin-compatible with 74LS and 74HC logic, but its TTL-compatible input thresholds let it interface directly with legacy ASIC or microprocessor outputs that swing to only 2.4 V high. ## Supply and temperature range — industrial and automotive environments The 6 mA source and 6 mA sink drive per output is modest — enough for one or two standard TTL loads or a short PCB trace — so if you are driving a long backplane or a high-capacitance bus, plan on a fan-out buffer stage or a higher-drive part like the 74HCT245. ## Package and mounting — 20-SSOP footprint Supplied in a 20-SSOP package (0.209\" body width, 5.30 mm), surface-mount only. The SSOP footprint is common for 20-pin bus-interface parts; the 0.65 mm pin pitch demands careful solder-paste stencil design to avoid bridges. ## Lifecycle and sourcing posture Nexperia continues to manufacture the 74HCT family, so this part is available through standard distribution. There is no official second-source listed in the record, but the 74HCT240 is a standard logic function offered by multiple vendors (TI, ON Semiconductor) — a cross-reference search against those manufacturers' 74HCT240 in 20-SSOP is straightforward if dual-sourcing is required.","metaTitle":"Nexperia 74HCT240DB,112 Buffer/Line Driver, 20-SSOP, Active","metaDescription":"Nexperia 74HCT240DB,112 dual inverting 3-state buffer, 4.5V-5.5V supply, -40°C to 125°C range. 20-SSOP package.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74HCT","Package":"Bulk","Logic Type":"Buffer, Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"20-SSOP (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"2","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"20-SSOP","Current - Output High, Low":"6mA, 6mA","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3","stockQuantity":0,"priceTiers":[{"qty":1013,"price":"$0.30000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d39351eb418fafa6180edf37671d5ea5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can I use 74HC240 instead of 74HCT240DB?","answer":"The 74HC240 has CMOS input thresholds (0.3 × VCC / 0.7 × VCC), while the 74HCT240 has TTL-compatible thresholds (0.8 V / 2.0 V). If your driving logic swings rail-to-rail (e.g., another HC output or a 5 V CMOS microcontroller), the 74HC240 works and draws lower quiescent current. If your input signal is from a 5 V TTL ASIC or a legacy bus that only reaches 2.4 V high, the 74HCT240 is the correct choice — the 74HC240 may not reliably register the high level. Both are pin-compatible in the same 20-SSOP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/74HCT240DB112","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/74HCT240DB112 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}