{"product_id":"74act646spc","title":"74ACT646SPC","description":"\u003cp\u003eThe 74ACT646SPC from Fairchild Semiconductor is a non-inverting transceiver in the 74ACT logic family. It operates from 4.5V to 5.5V, making it suitable for traditional 5V systems. This single-channel transceiver features 3-State outputs, enabling bidirectional data flow on shared buses. With a balanced output current of 24mA source and sink, it can drive standard TTL loads effectively. The device is housed in a 24-DIP package, which is convenient for through-hole PCB designs and prototyping. It operates over an industrial temperature range of -40°C to 85°C. Typical applications include data bus interfacing, peripheral control, and industrial automation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBidirectional Data Flow: Allows data transfer in both directions, reducing component count.\u003c\/li\u003e\n\u003cli\u003eTTL-Compatible Inputs: Directly interfaces with 5V TTL logic without extra circuitry.\u003c\/li\u003e\n\u003cli\u003e3-State Outputs: Facilitates bus sharing and reduces power when idle.\u003c\/li\u003e\n\u003cli\u003eThrough-Hole DIP Package: Easy to solder and prototype, ideal for legacy designs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e5V Bidirectional Bus Transceiver\u003c\/h3\u003e\u003cp\u003eUse the 74ACT646SPC to interface two 5V data buses in microprocessor systems. The 3-State outputs prevent bus contention when multiple devices are active.\u003c\/p\u003e\u003ch3\u003eData Acquisition Systems\u003c\/h3\u003e\u003cp\u003eIn DAQ systems, this transceiver buffers data between an ADC and a microcontroller. The 24mA drive ensures reliable data transfer over short distances.\u003c\/p\u003e\u003ch3\u003eLegacy 5V Logic Interfacing\u003c\/h3\u003e\u003cp\u003eWhen connecting older 5V TTL logic to newer CMOS devices, this transceiver provides the necessary voltage and current compatibility.\u003c\/p\u003e\u003ch3\u003ePeripheral Device Control\u003c\/h3\u003e\u003cp\u003eDrive control signals to printers or external peripherals. The bidirectional nature allows for both command and status data flow.\u003c\/p\u003e\u003ch3\u003eIndustrial Automation I\/O\u003c\/h3\u003e\u003cp\u003eIn PLC I\/O modules, this transceiver buffers signals between the backplane and field devices, providing robust 5V logic levels.\u003c\/p\u003e\u003ch3\u003ePrototyping and Education\u003c\/h3\u003e\u003cp\u003eThe DIP package makes it easy to use on breadboards for educational projects involving bus architecture and bidirectional communication.\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\u003eFairchild Semiconductor\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProduct Series\u003c\/td\u003e \t\u003ctd\u003e74ACT\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\u003e24mA, 24mA\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-40°C ~ 85°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-PDIP\u003c\/td\u003e \u003c\/tr\u003e  \u003c\/tbody\u003e\n\u003c\/table\u003e\u003cdl\u003e\n\u003cdt\u003eQ: What logic family is the 74ACT646SPC?\u003c\/dt\u003e\n\u003cdd\u003eA: It belongs to the 74ACT family, which is advanced CMOS with TTL-compatible inputs.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the function of this device?\u003c\/dt\u003e\n\u003cdd\u003eA: It is a non-inverting transceiver with 1 channel, allowing bidirectional data flow.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the output type?\u003c\/dt\u003e\n\u003cdd\u003eA: It has 3-State outputs for bus-oriented applications.\u003c\/dd\u003e\n\u003cdt\u003eQ: What voltage does it operate at?\u003c\/dt\u003e\n\u003cdd\u003eA: It operates from 4.5V to 5.5V, standard for 5V systems.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the output current?\u003c\/dt\u003e\n\u003cdd\u003eA: It can source and sink 24mA, suitable for driving TTL loads.\u003c\/dd\u003e\n\u003cdt\u003eQ: What package is it available in?\u003c\/dt\u003e\n\u003cdd\u003eA: It comes in a 24-DIP (0.300\", 7.62mm) package, ideal for through-hole prototyping.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Fairchild Semiconductor","offers":[{"title":"Default Title","offer_id":53666108506401,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/hqickey.com\/products\/74act646spc","provider":"HQICKEY","version":"1.0","type":"link"}