{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74F245N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74F245N","canonicalUrl":"https://icboms.com/texas-instruments/SN74F245N","factsUrl":"https://icboms.com/api/mcp/products/SN74F245N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74F series SN74F245N, 8-bit non-inverting transceiver with 3-state outputs, 20-DIP through-hole package, 4.5V to 5.5V supply, commercial temperature range.","salesMarkdown":"## 20-pin DIP — board-fit and assembly reality The SN74F245N comes in a 20-DIP (0.300\", 7.62mm) through-hole package, supplier device package 20-PDIP. This is a standard 0.100-inch pitch DIP — the footprint is universal across socketed and soldered boards, and the 0.300-inch row spacing fits a single-width socket. No MSL rating to worry about; the through-hole body handles reflow or wave solder without moisture sensitivity concerns. The through-hole form factor means the part sits above the board — plan for a 0.150-inch seated height clearance under the next board or cover. The lead pitch and hole diameter match the standard DIP-20 land pattern; no fine-pitch alignment issues on the pick-and-place if you're using a through-hole feeder. ## Output drive — what the current numbers mean for bus loading The SN74F245N specifies two sets of output current ratings: 3mA source / 24mA sink (standard 74F family drive) and a second set at 15mA source / 64mA sink. The higher 64mA sink capability means this transceiver can drive heavily loaded buses or multiple TTL inputs without external buffers — useful in a backplane or memory-address bus where the fan-out exceeds 10 standard LS loads. The 3mA source current is the limiting factor for driving CMOS inputs with high input capacitance — if the bus has more than a few CMOS loads, the rise time will stretch. For mixed TTL/CMOS buses, the 15mA source rating gives better margin. The 64mA sink is the headline figure for bus contention scenarios; it clears a low-impedance bus quickly. ## 5V supply and temperature — where this part fits The SN74F245N operates from a 4.5V to 5.5V supply — a standard 5V rail with ±10% tolerance. This is the classic TTL supply range, so the part is a drop-in for legacy 5V logic systems, ISA-style buses, and microcontroller interfaces that still run on 5V. The 74F family is faster than 74LS but slower than 74ACT — typical propagation delay is around 4-5 ns per gate, which puts it in the 50-100 MHz bus range. For a 5V-only design that needs bidirectional bus control without level translation, this is a straightforward choice. ## Active lifecycle and compliance — no obsolescence worry No need to stockpile or worry about a sudden EOL. The 20-DIP package is a common through-hole form factor that multiple distributors carry.","metaTitle":"SN74F245N Texas Instruments 74F Transceiver, 20-DIP","metaDescription":"SN74F245N 8-bit non-inverting transceiver, 3-state outputs, 4.5V-5.5V supply. Active production, RoHS3. Through-hole 20-DIP. Quoted to order.","metaKeywords":null},"attributes":{"series":"74F","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74F","Package":"Tube","Logic Type":"Transceiver, Non-Inverting","Output Type":"3-State","Mounting Type":"Through Hole","Package / Case":"20-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"1","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"20-PDIP","Current - Output High, Low":"3mA, 24mA; 15mA, 64mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.07","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.07000","currency":"USD"},{"qty":10,"price":"$0.95400","currency":"USD"},{"qty":25,"price":"$0.90520","currency":"USD"},{"qty":100,"price":"$0.74360","currency":"USD"},{"qty":250,"price":"$0.69508","currency":"USD"},{"qty":500,"price":"$0.61428","currency":"USD"},{"qty":1000,"price":"$0.48495","currency":"USD"},{"qty":2500,"price":"$0.45750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3579e669006a39d52043815a713cf2ec.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does the SN74F245N compare to the SN74LS645-1N?","answer":"Both are 8-bit non-inverting transceivers with 3-state outputs in a 20-DIP package, but the 74F family is faster. The SN74F245N offers higher output drive (64mA sink vs 15mA for the LS645) and operates from a wider 4.5V-5.5V supply vs 4.75V-5.25V. The pinout is the same — the F245N is a direct speed-and-drive upgrade for an LS645 socket without board changes."},{"question":"How can I order the SN74F245N or check current pricing?","answer":"The SN74F245N is an active, standard-production part. Submit an RFQ through this listing for current pricing and availability confirmed against your BOM quantity. Sourced through independent distribution with full traceability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74F245N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74F245N 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}}