{"product_id":"cd54hc646f3a","title":"CD54HC646F3A","description":"\u003cp\u003eThe CD54HC646F3A is a high-speed CMOS octal transceiver from Texas Instruments, featuring non-inverting data paths and 3-State outputs. It operates over a wide 2V to 6V supply range, making it versatile for both 3.3V and 5V applications. The device includes internal registers for data storage, enabling synchronous bus operations. Packaged in a rugged 24-pin ceramic CDIP, it is designed for extended temperature ranges (-55°C to 125°C), making it suitable for military and industrial environments. Its 7.8mA drive current ensures reliable signal transmission in moderate-load applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide 2V to 6V Supply Range:\u003c\/strong\u003e Seamlessly interfaces between 3.3V and 5V logic, reducing the need for level shifters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Registers:\u003c\/strong\u003e Allows data latching for synchronous transfer, simplifying timing design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Temperature Range (-55°C to 125°C):\u003c\/strong\u003e Suitable for harsh military and industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHermetic Ceramic Package:\u003c\/strong\u003e Provides superior protection against moisture and mechanical stress.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWide-Voltage Bus Transceivers\u003c\/h3\u003e\u003cp\u003eThe CD54HC646F3A is ideal for interfacing between 3.3V and 5V logic systems in mixed-voltage environments. Its 2V to 6V supply range allows direct connection to both voltage domains without external level shifters, simplifying PCB design.\u003c\/p\u003e\u003ch3\u003eRegistered Data Storage and Transfer\u003c\/h3\u003e\u003cp\u003eWith built-in registers, this transceiver can latch data before transmission, making it perfect for synchronous bus applications. Use it in microprocessor systems where data must be held stable during read\/write cycles.\u003c\/p\u003e\u003ch3\u003eMilitary and Aerospace Electronics\u003c\/h3\u003e\u003cp\u003eRated for -55°C to 125°C and packaged in a hermetic ceramic CDIP, this IC is suitable for extreme environments. It can be used in avionics data buses and satellite telemetry systems where reliability is critical.\u003c\/p\u003e\u003ch3\u003eIndustrial Process Controllers\u003c\/h3\u003e\u003cp\u003eIn factory automation, this transceiver buffers signals between a central PLC and remote I\/O modules. The 3-State outputs prevent bus contention when multiple modules communicate over a shared backplane.\u003c\/p\u003e\u003ch3\u003eBidirectional Data Paths in Test Equipment\u003c\/h3\u003e\u003cp\u003eUse the CD54HC646F3A in benchtop instruments to route data bidirectionally between a microcontroller and external memory or peripherals. The non-inverting path preserves data polarity, reducing firmware complexity.\u003c\/p\u003e\u003ch3\u003eLegacy System Integration\u003c\/h3\u003e\u003cp\u003eWhen upgrading old 5V-only systems to newer 3.3V controllers, this transceiver bridges the gap. Its high-impedance 3-State outputs allow safe power sequencing during system startup.\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\u003eTexas Instruments\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProduct Series\u003c\/td\u003e \t\u003ctd\u003e54HC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackaging\u003c\/td\u003e \t\u003ctd\u003e | \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\u003e7.8mA, 7.8mA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Supply\u003c\/td\u003e \t\u003ctd\u003e2V ~ 6V\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  \u003ctr\u003e   \u003ctd\u003eROHS\u003c\/td\u003e   \u003ctd\u003e\u003cimg class=\"ROSHICON\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/ROHSICON.png?v=1757832376\"\u003e\u003c\/td\u003e  \u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cdl\u003e\n\u003cdt\u003eQ: What logic family does the CD54HC646F3A belong to?\u003c\/dt\u003e\n\u003cdd\u003eA: It is part of the 54HC (High-Speed CMOS) logic family, offering a wide operating voltage range.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the function of this IC?\u003c\/dt\u003e\n\u003cdd\u003eA: It is an octal (8-bit) non-inverting transceiver with 3-State outputs, featuring separate registers for storage.\u003c\/dd\u003e\n\u003cdt\u003eQ: How many channels does it have?\u003c\/dt\u003e\n\u003cdd\u003eA: It has 1 channel of 8 bits, providing bidirectional data transfer.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the output type?\u003c\/dt\u003e\n\u003cdd\u003eA: The outputs are 3-State, allowing for bus sharing and multiplexing.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the voltage range?\u003c\/dt\u003e\n\u003cdd\u003eA: It operates from 2V to 6V, making it compatible with both 3.3V and 5V systems.\u003c\/dd\u003e\n\u003cdt\u003eQ: What package is it available in?\u003c\/dt\u003e\n\u003cdd\u003eA: It comes in a 24-pin CDIP (Ceramic Dual In-line Package) with a 0.600-inch width.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Texas Instruments","offers":[{"title":"Default Title","offer_id":53666249539873,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/hqickey.com\/products\/cd54hc646f3a","provider":"HQICKEY","version":"1.0","type":"link"}