{"product_id":"74hc245-octal-bus-transceiver-with-3-state-outputs-20-pin-dip-package","title":"74HC245 (Octal Bus Transceiver with 3-State Outputs - 20-Pin DIP Package)","description":"\u003cp data-path-to-node=\"5\"\u003eWhile the 74HC244 is perfect for sending data in a single direction, many complex digital systems require components to both send \u003ci data-path-to-node=\"5\" data-index-in-node=\"130\"\u003eand\u003c\/i\u003e receive data over the exact same wires. If your microcontroller needs to write data to a memory chip and then read data back from that same chip a millisecond later, you need a two-way traffic controller. The \u003cb data-path-to-node=\"5\" data-index-in-node=\"343\"\u003e74HC245\u003c\/b\u003e is the industry-standard octal bus transceiver. It features eight parallel channels that can transmit data in either direction, completely eliminating the need to clutter your circuit board with separate input and output buffering chips.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eThe direction of the data flow is controlled by a single Direction (DIR) pin. Pulling it High sends data from Bus A to Bus B; pulling it Low reverses the flow from Bus B to Bus A. Like its one-way cousin, the 74HC245 features an active-low Output Enable (OE) pin. When this pin is pulled High, the chip entirely disconnects its outputs, entering a \"High-Impedance\" (Tri-State) mode. This safely isolates different segments of a shared data bus, preventing fatal short circuits when multiple chips attempt to communicate on the same lines simultaneously.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eKey Features \u0026amp; Functional Advantages:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eBi-Directional Data Flow:\u003c\/b\u003e Features a dedicated DIR pin that instantly toggles the chip between transmitting and receiving data across all eight channels simultaneously.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eTri-State Outputs:\u003c\/b\u003e Safely isolates your components by providing a High-Impedance state, allowing multiple devices to share a main data bus without interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003e8-Bit Wide Data Path:\u003c\/b\u003e Perfectly sized to handle a complete byte of data, making it the ideal companion for 8-bit microprocessors and parallel memory architectures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eHigh-Speed CMOS (HC) Architecture:\u003c\/b\u003e Operates flawlessly across a 2.0V to 6.0V range, combining the rapid switching speeds of TTL logic with the extreme power efficiency of modern CMOS.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eBreadboard Native (20-DIP):\u003c\/b\u003e Sized to fit perfectly across the center trench of a standard solderless breadboard, allowing for rapid integration into classic 8-bit logic projects.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003ePerfect For:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eShared Data Buses:\u003c\/b\u003e The standard hardware for isolating a delicate CPU from the heavy electrical loads of a shared system data bus in DIY 8-bit computer builds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003eBi-Directional Logic Buffering:\u003c\/b\u003e Easily revitalizes weak digital signals traveling in both directions down long ribbon cables or noisy PCB traces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eMemory Interfacing:\u003c\/b\u003e Mandatory for safely connecting RAM or EEPROM chips to a microprocessor where read and write operations happen on the exact same pins.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"0\"\u003eLogic Isolation:\u003c\/b\u003e A highly reliable way to physically isolate a programmer from the rest of the circuit while flashing a microcontroller.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"12\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,0,0\"\u003e\u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"0\"\u003eLogic Family:\u003c\/b\u003e 74HC (High-Speed CMOS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,1,0\"\u003e\u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"0\"\u003eLogic Function:\u003c\/b\u003e Octal Bus Transceiver\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,2,0\"\u003e\u003cb data-path-to-node=\"12,2,0\" data-index-in-node=\"0\"\u003eNumber of Channels:\u003c\/b\u003e 8 (Octal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,3,0\"\u003e\u003cb data-path-to-node=\"12,3,0\" data-index-in-node=\"0\"\u003eData Direction:\u003c\/b\u003e Bi-Directional (Controlled by DIR pin)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,4,0\"\u003e\u003cb data-path-to-node=\"12,4,0\" data-index-in-node=\"0\"\u003eOutput Type:\u003c\/b\u003e 3-State (Tri-State \/ High-Impedance capable)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,5,0\"\u003e\u003cb data-path-to-node=\"12,5,0\" data-index-in-node=\"0\"\u003eOutput Enable Logic:\u003c\/b\u003e Active-LOW\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,6,0\"\u003e\u003cb data-path-to-node=\"12,6,0\" data-index-in-node=\"0\"\u003eOperating Supply Voltage (Vcc):\u003c\/b\u003e 2.0V to 6.0V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,7,0\"\u003e\u003cb data-path-to-node=\"12,7,0\" data-index-in-node=\"0\"\u003eMaximum Output Current:\u003c\/b\u003e ~35 mA per pin\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,8,0\"\u003e\u003cb data-path-to-node=\"12,8,0\" data-index-in-node=\"0\"\u003ePackage \/ Case:\u003c\/b\u003e 20-DIP (0.300\", 7.62mm width)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,9,0\"\u003e\u003cb data-path-to-node=\"12,9,0\" data-index-in-node=\"0\"\u003eMounting Type:\u003c\/b\u003e Through-Hole (PTH)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K-TECHNICS","offers":[{"title":"Default Title","offer_id":42866158403655,"sku":null,"price":50.0,"currency_code":"KES","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/7637\/2039\/files\/s-l1600_4.webp?v=1781091931","url":"https:\/\/www.ktechnics.com\/products\/74hc245-octal-bus-transceiver-with-3-state-outputs-20-pin-dip-package","provider":"K-TECHNICS","version":"1.0","type":"link"}