{"product_id":"74hc245-octal-bus-transceiver-sop20-3state-5pack","title":"74HC245 Octal Bus Transceiver — SOP-20 Wide Body, 3-State, 2–6V (5-Pack)","description":"\u003ch2\u003e74HC245 — Octal Bus Transceiver, SOP-20 Wide Body, 3-State Outputs\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e74HC245\u003c\/strong\u003e (also marked \u003cstrong\u003eICN74HC245\u003c\/strong\u003e or \u003cstrong\u003eSM74HC245D\u003c\/strong\u003e) is a high-speed \u003cstrong\u003eCMOS octal (8-bit) bidirectional bus transceiver\u003c\/strong\u003e with \u003cstrong\u003e3-state outputs\u003c\/strong\u003e in a \u003cstrong\u003eSOP-20 wide-body (7.2mm) SMD package\u003c\/strong\u003e. It provides \u003cstrong\u003enon-inverting data transfer\u003c\/strong\u003e in either direction (A→B or B→A) controlled by the direction pin (DIR), and can be disabled to high-impedance state via the output enable pin (\/OE). Operating from \u003cstrong\u003e2V to 6V\u003c\/strong\u003e, it is compatible with both 3.3V and 5V logic systems. Each pack contains \u003cstrong\u003e5 pieces\u003c\/strong\u003e.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e74HC245 (ICN74HC245 \/ SM74HC245D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-20 Wide Body (7.2mm, 1.27mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eOctal Bidirectional Bus Transceiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Width\u003c\/td\u003e\n\u003ctd\u003e8-bit (octal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003e3-State (High-Z when \/OE = HIGH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDirection Control\u003c\/td\u003e\n\u003ctd\u003eDIR pin (HIGH = A→B, LOW = B→A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (V\u003csub\u003eCC\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e2V – 6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (I\u003csub\u003eOH\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e-7.8mA (source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (I\u003csub\u003eOL\u003c\/sub\u003e)\u003c\/td\u003e\n\u003ctd\u003e7.8mA (sink)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePropagation Delay\u003c\/td\u003e\n\u003ctd\u003e~7ns @ 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Family\u003c\/td\u003e\n\u003ctd\u003eHC CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose 74HC245?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8-bit bidirectional\u003c\/strong\u003e — transfer full byte in either direction with single DIR pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-state outputs\u003c\/strong\u003e — multiple transceivers can share the same bus without conflict\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7.8mA output drive\u003c\/strong\u003e — directly drive LEDs, logic inputs, and bus lines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2–6V supply\u003c\/strong\u003e — compatible with 3.3V and 5V systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~7ns propagation delay\u003c\/strong\u003e — suitable for high-speed data bus applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — enough for multi-byte bus or multiple projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eData bus buffering\u003c\/strong\u003e — isolate and buffer microcontroller data buses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic level shifting\u003c\/strong\u003e — interface 3.3V microcontrollers with 5V peripherals (with appropriate V\u003csub\u003eCC\u003c\/sub\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED matrix driving\u003c\/strong\u003e — sink current for 8-LED rows in matrix displays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory interface\u003c\/strong\u003e — buffer address and data buses for SRAM and Flash memory\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFPGA I\/O expansion\u003c\/strong\u003e — extend FPGA I\/O with buffered 3-state outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus isolation\u003c\/strong\u003e — isolate subsystems on shared data bus with \/OE control\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003ePin Description\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eName\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e\/OE\u003c\/td\u003e\n\u003ctd\u003eOutput Enable (active LOW — HIGH = high-Z)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eDIR\u003c\/td\u003e\n\u003ctd\u003eDirection (HIGH = A→B, LOW = B→A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3–10\u003c\/td\u003e\n\u003ctd\u003eA1–A8\u003c\/td\u003e\n\u003ctd\u003eA-side data bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11–18\u003c\/td\u003e\n\u003ctd\u003eB1–B8\u003c\/td\u003e\n\u003ctd\u003eB-side data bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003eV\u003csub\u003eCC\u003c\/sub\u003e\n\u003c\/td\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can 74HC245 be used for 3.3V to 5V level shifting?\u003c\/strong\u003e\u003cbr\u003eA: Partially. Power the 74HC245 at 5V and connect the A-side to 5V logic and B-side to 3.3V logic. The 3.3V inputs will be recognized as HIGH (V\u003csub\u003eIH\u003c\/sub\u003e min = 3.5V at 5V V\u003csub\u003eCC\u003c\/sub\u003e). For reliable bidirectional level shifting, use a dedicated level shifter (e.g., TXB0108).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 74HC245 and 74HCT245?\u003c\/strong\u003e\u003cbr\u003eA: 74HC245 has CMOS-level inputs (V\u003csub\u003eIH\u003c\/sub\u003e = 0.7×V\u003csub\u003eCC\u003c\/sub\u003e). 74HCT245 has TTL-compatible inputs (V\u003csub\u003eIH\u003c\/sub\u003e = 2.0V fixed), making it better for interfacing with 5V TTL outputs when powered at 5V.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is ICN74HC245 the same as 74HC245?\u003c\/strong\u003e\u003cbr\u003eA: Yes. ICN74HC245 and SM74HC245D are manufacturer-specific markings for the standard 74HC245 function. They are pin-compatible and electrically equivalent.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× 74HC245 Octal Bus Transceiver SOP-20 (new, original)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991476621547,"sku":"\u003cnone\u003e","price":5.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/icn74hc245-sm74hc245d-74hc245-sop20-wide-body-bus-transceiver.webp?v=1761630077","url":"https:\/\/keszoox.com\/products\/74hc245-octal-bus-transceiver-sop20-3state-5pack","provider":"Keszoox","version":"1.0","type":"link"}