{"product_id":"cd54hct646f3a","title":"CD54HCT646F3A","description":"\u003cp\u003eThe CD54HCT646F3A is a high-speed silicon-gate CMOS octal bus transceiver from Harris Corporation. Operating from 4.5V to 5.5V, this non-inverting transceiver features 3-State outputs and a single 8-bit channel. It is designed for bidirectional asynchronous communication between data buses, with a typical propagation delay of only 13ns. Housed in a robust 24-pin ceramic DIP, it operates over the full military temperature range of -55°C to 125°C, making it suitable for demanding aerospace and industrial applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMilitary Temperature Range (-55°C to 125°C): Ensures reliable operation in extreme environments, ideal for defense and aerospace.\u003c\/li\u003e\n\u003cli\u003eTTL-Compatible Inputs: Simplifies mixing with legacy 5V TTL logic without additional level shifters.\u003c\/li\u003e\n\u003cli\u003e3-State Outputs: Allows multiple devices to share a common bus safely, preventing data corruption.\u003c\/li\u003e\n\u003cli\u003eCeramic DIP Package: Provides superior thermal conductivity and hermetic sealing for long-term reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBidirectional Bus Interfacing\u003c\/h3\u003e\u003cp\u003eUse the CD54HCT646F3A to connect two 8-bit data buses in microprocessor systems. Its 3-State outputs prevent bus contention and allow multiple devices to share the same lines.\u003c\/p\u003e\u003ch3\u003eHigh-Reliability Aerospace Systems\u003c\/h3\u003e\u003cp\u003eWith a -55°C to 125°C temperature range and ceramic package, this transceiver is ideal for avionics and satellite control units where extreme temperatures are common.\u003c\/p\u003e\u003ch3\u003eTTL-to-CMOS Level Translation\u003c\/h3\u003e\u003cp\u003eThe 54HCT family accepts TTL voltage levels while providing CMOS output swings, enabling seamless interfacing between legacy TTL logic and modern CMOS peripherals.\u003c\/p\u003e\u003ch3\u003eMemory Address\/Data Buffering\u003c\/h3\u003e\u003cp\u003eBuffer address or data lines between a CPU and SRAM\/EPROM. The non-inverting function preserves signal integrity, and 3-State outputs allow memory sharing.\u003c\/p\u003e\u003ch3\u003eIndustrial Process Controllers\u003c\/h3\u003e\u003cp\u003eIn factory automation, this transceiver can drive control signals over long backplanes. The wide temperature range ensures reliable operation in unheated plant floors.\u003c\/p\u003e\u003ch3\u003eRedundant System Switching\u003c\/h3\u003e\u003cp\u003eUse the 3-State feature to switch between redundant controller boards. Only the active board drives the bus, while the standby board remains high-impedance.\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\u003e54HCT\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\u003e-\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-CDIP (0.600\", 15.24mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSupplier Device Package\u003c\/td\u003e \t\u003ctd\u003e24-CDIP\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 CD54HCT646F3A?\u003c\/dt\u003e\n\u003cdd\u003eA: It belongs to the 54HCT logic family, offering high-speed CMOS performance 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 a non-inverting transceiver with 3-State outputs, ideal for bidirectional bus communication.\u003c\/dd\u003e\n\u003cdt\u003eQ: How many channels does it have?\u003c\/dt\u003e\n\u003cdd\u003eA: It features 1 channel (8-bit) for data transmission.\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, making it suitable for standard 5V systems.\u003c\/dd\u003e\n\u003cdt\u003eQ: What package is available?\u003c\/dt\u003e\n\u003cdd\u003eA: It comes in a 24-CDIP (0.600\", 15.24mm) ceramic dual-inline package.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the temperature range?\u003c\/dt\u003e\n\u003cdd\u003eA: It is rated for military temperature range from -55°C to 125°C.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Harris Corporation","offers":[{"title":"Default Title","offer_id":53666173845793,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/hqickey.com\/de\/products\/cd54hct646f3a","provider":"HQICKEY","version":"1.0","type":"link"}