{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC664NT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC664NT","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC664NT","factsUrl":"https://icboms.com/api/mcp/products/SN74HC664NT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74HC664NT, 74HC series, 8-bit bus driver/transceiver, non-inverting, 3-state outputs, Bulk package, active lifecycle.","salesMarkdown":"## 8-bit bus transceiver from the 74HC family The SN74HC664NT: Its non-inverting, 3-state outputs let multiple devices share the bus without contention, making it a standard choice for memory-mapped I/O, peripheral interfaces, and backplane buffers in industrial control and telecom equipment. The 74HC family operates from 2 V to 6 V, so this part integrates directly into 5 V and 3.3 V mixed-voltage systems without level-shifting on the control side. ## Active lifecycle — no end-of-life pressure This removes the last-time-buy urgency that haunts older 74LS and 74ALS siblings. For RoHS-required builds, a lead-free equivalent in the 74HC family would need a different suffix — verify the package and finish before substituting. ## What the 74HC family means for your bus The 74HC series uses CMOS inputs with typical thresholds at 0.3 × VCC and 0.7 × VCC, giving wider noise margins than the bipolar 74LS family at the same supply voltage. Propagation delay and output drive are comparable to LS at 5 V, but HC draws significantly lower quiescent current — important for battery-backed or power-constrained boards. The 3-state outputs on this transceiver let you disconnect the bus when the device is not selected, avoiding bus contention in multi-drop configurations.","metaTitle":"SN74HC664NT 8-bit bus transceiver, 74HC series, active","metaDescription":"SN74HC664NT 8-bit bus driver/transceiver from the 74HC family. Active lifecycle, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74HC","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.52","stockQuantity":0,"priceTiers":[{"qty":577,"price":"$0.52000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/42712ec09c242471d802b1f295205176.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SN74HC664NT compatible with 5V logic?","answer":"Yes. The 74HC family is specified at 5 V and its CMOS inputs accept standard 5 V logic levels. Outputs swing rail-to-rail, so they drive 5 V CMOS loads directly. For 5 V TTL inputs, the HC thresholds have margin at 5 V supply."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC664NT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC664NT 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}}