{"product_id":"cd74hct646e","title":"CD74HCT646E","description":"\u003cp\u003eThe CD74HCT646 is an octal bus transceiver from Harris Corporation, designed for bidirectional asynchronous communication in 5V systems. It operates from 4.5V to 5.5V and features TTL-compatible inputs, making it easy to interface with legacy TTL logic. The non-inverting 3-State outputs allow for flexible bus control. Each of its 8 channels can sink or source 6mA. Housed in a 24-DIP package, it is ideal for through-hole PCB designs and harsh environments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTTL-Compatible Inputs: Simplifies interfacing with legacy 5V TTL logic, reducing design complexity.\u003c\/li\u003e\n\u003cli\u003eWide Operating Temperature (-55°C to 125°C): Suitable for military and aerospace applications.\u003c\/li\u003e\n\u003cli\u003eBidirectional Octal Bus: Handles 8-bit data flow in both directions, reducing component count.\u003c\/li\u003e\n\u003cli\u003e3-State Outputs: Enables bus sharing and isolation, critical in multiplexed architectures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e5V Microprocessor Bus Interfacing\u003c\/h3\u003e\u003cp\u003eWith a 4.5V-5.5V supply and TTL-compatible inputs, it is ideal for interfacing with 5V microprocessors and legacy digital systems.\u003c\/p\u003e\u003ch3\u003eBidirectional Data Bus\u003c\/h3\u003e\u003cp\u003eThe octal transceiver function allows bidirectional data flow between two buses, controlled by direction and output enable pins.\u003c\/p\u003e\u003ch3\u003eMemory Expansion\u003c\/h3\u003e\u003cp\u003eIt can buffer address and data lines in 5V memory systems, improving signal integrity and allowing for more memory modules.\u003c\/p\u003e\u003ch3\u003eIndustrial Control Systems\u003c\/h3\u003e\u003cp\u003eWith an operating temperature range of -55°C to 125°C, it is suitable for extreme environments like aerospace and industrial control.\u003c\/p\u003e\u003ch3\u003eLegacy System Upgrades\u003c\/h3\u003e\u003cp\u003eIts TTL-compatible inputs make it easy to interface with older TTL logic, simplifying upgrades of existing systems.\u003c\/p\u003e\u003ch3\u003eTest Equipment\u003c\/h3\u003e\u003cp\u003eIts robust drive and 3-State outputs make it useful for routing signals in automated test equipment.\u003c\/p\u003e\u003ctable\u003e\n\u003ccolgroup\u003e\u003ccol\u003e\u003c\/colgroup\u003e \u003ctbody\u003e \u003ctr\u003e \t\u003ctd\u003eProduct attributes\u003c\/td\u003e \t\u003ctd\u003eProperty Value\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eManufacturer\u003c\/td\u003e \t\u003ctd\u003eHarris Corporation\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProduct Series\u003c\/td\u003e \t\u003ctd\u003e74HCT\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackaging\u003c\/td\u003e \t\u003ctd\u003eBulk | \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePart Status\u003c\/td\u003e \t\u003ctd\u003eActive\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eLogic Type\u003c\/td\u003e \t\u003ctd\u003eTransceiver, Non-Inverting\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eNumber of Elements\u003c\/td\u003e \t\u003ctd\u003e1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eNumber of Bits per Element\u003c\/td\u003e \t\u003ctd\u003e8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eInput Type\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOutput Type\u003c\/td\u003e \t\u003ctd\u003e3-State\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eCurrent - Output High, Low\u003c\/td\u003e \t\u003ctd\u003e6mA, 6mA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Supply\u003c\/td\u003e \t\u003ctd\u003e4.5V ~ 5.5V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOperating Temperature\u003c\/td\u003e \t\u003ctd\u003e-55°C ~ 125°C (TA)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eGrade\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eQualification\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eMounting Type\u003c\/td\u003e \t\u003ctd\u003eThrough Hole\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackage \/ Case\u003c\/td\u003e \t\u003ctd\u003e24-DIP (0.300\", 7.62mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSupplier Device Package\u003c\/td\u003e \t\u003ctd\u003e24-DIP\u003c\/td\u003e \u003c\/tr\u003e  \u003c\/tbody\u003e\n\u003c\/table\u003e\u003cdl\u003e\n\u003cdt\u003eQ: What is the logic family of the CD74HCT646E?\u003c\/dt\u003e\n\u003cdd\u003eA: It belongs to the 74HCT high-speed CMOS family with TTL-compatible inputs.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the function of this IC?\u003c\/dt\u003e\n\u003cdd\u003eA: It is an octal bus transceiver with non-inverting 3-State outputs.\u003c\/dd\u003e\n\u003cdt\u003eQ: How many channels does it have?\u003c\/dt\u003e\n\u003cdd\u003eA: It has 1 channel with 8 bits (octal).\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the output type?\u003c\/dt\u003e\n\u003cdd\u003eA: The outputs are 3-State, enabling bidirectional bus communication.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the operating voltage range?\u003c\/dt\u003e\n\u003cdd\u003eA: It operates from 4.5V to 5.5V, ideal for 5V systems.\u003c\/dd\u003e\n\u003cdt\u003eQ: What package is available?\u003c\/dt\u003e\n\u003cdd\u003eA: It comes in a 24-DIP package.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Harris Corporation","offers":[{"title":"Default Title","offer_id":53665875886369,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/hqickey.com\/products\/cd74hct646e","provider":"HQICKEY","version":"1.0","type":"link"}