{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AC563N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AC563N","canonicalUrl":"https://icboms.com/texas-instruments/SN74AC563N","factsUrl":"https://icboms.com/api/mcp/products/SN74AC563N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AC series SN74AC563N, D-Type Transparent Latch, 8:8 circuit, Tri-State output, Through Hole, 20-DIP (0.300\", 7.62mm), 2V ~ 6V supply, 4.6ns propagation delay, 24mA output drive, -40°C ~ 85°C.","salesMarkdown":"## Octal transparent latch with tri-state bus hold The Texas Instruments SN74AC563N is an octal D-type transparent latch in the 74AC logic family. When the latch-enable input is high, the Q outputs follow the D inputs; when low, the outputs latch the last data. The tri-state output control lets you isolate the latch from the bus, which is useful in shared-data-path designs like microprocessor memory interfaces or I/O port expansion. The 20-pin DIP package (0.300\" body width) is a through-hole footprint that suits prototyping, legacy board repairs, or designs where vibration resistance matters more than board density. Industrial temperature range (-40°C to 85°C) covers factory-floor enclosures, outdoor telecom cabinets, and unheated storage. ## Lifecycle and sourcing The SN74AC563N is listed as Active with RoHS3 compliance. No end-of-life notice or last-time-buy schedule is in effect, so it remains a standard catalog item through TI's distribution channel. For BOM planning, this means no near-term requalification risk — you can freeze the line item without watching for a PCN. ## Tri-state output: bus isolation without a separate buffer The tri-state output enable (active-low) lets multiple latches share a common data bus. When the output enable is high, the outputs go high-impedance — the latch still captures data internally, but the bus sees no load. This is the standard architecture for memory address latches, peripheral I/O ports, and bidirectional data buffers where you need to park the outputs during a bus turn-around.","metaTitle":"SN74AC563N D-Type Transparent Latch, 4.6ns, 20-DIP","metaDescription":"TI SN74AC563N octal D-type transparent latch with tri-state outputs. 2V–6V supply, 24mA drive, 4.6ns propagation delay. Active, RoHS3.","metaKeywords":null},"attributes":{"series":"74AC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"74AC","Circuit":"8:8","Package":"Tube","Logic Type":"D-Type Transparent Latch","Output Type":"Tri-State","Mounting Type":"Through Hole","Package / Case":"20-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Independent Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-PDIP","Delay Time - Propagation":"4.6ns","Current - Output High, Low":"24mA, 24mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.88","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.88000","currency":"USD"},{"qty":10,"price":"$1.68500","currency":"USD"},{"qty":25,"price":"$1.59000","currency":"USD"},{"qty":100,"price":"$1.35470","currency":"USD"},{"qty":250,"price":"$1.27200","currency":"USD"},{"qty":500,"price":"$1.11300","currency":"USD"},{"qty":1000,"price":"$0.92220","currency":"USD"},{"qty":2500,"price":"$0.90000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/afbbe7f8d1d1d9ffd3e12a41736c13ad.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between SN74AC563N and SN74AC564N?","answer":"The SN74AC563N is a transparent latch (outputs follow inputs while latch-enable is high). The SN74AC564N is a flip-flop (edge-triggered register) — it captures data only on a clock edge. Both are octal, tri-state, 20-DIP, but the 564N is used where you need synchronous storage rather than transparent pass-through."},{"question":"Is SN74AC563N a tri-state latch?","answer":"Yes, the SN74AC563N has tri-state outputs controlled by an active-low output-enable pin. When the output enable is high, the outputs go high-impedance, allowing multiple devices to share a common bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AC563N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AC563N 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}}