{"product_id":"dm74ls240sj","title":"DM74LS240SJ","description":"\u003cp\u003eThe DM74LS240SJ from Fairchild Semiconductor is a dual inverting buffer designed for 5V TTL systems. Operating within a 4.75V to 5.25V supply range, it provides two channels with 3-State outputs, enabling efficient bus multiplexing and signal isolation. With a high output current of 15mA (sink) and 24mA (source), it can drive heavy loads while maintaining signal integrity. Its 20-SOIC package is suitable for standard PCB layouts. This buffer is commonly used in bus line driving, memory address buffering, and industrial control applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh Output Drive: 24mA source current ensures reliable driving of capacitive loads and long bus lines.\u003c\/li\u003e\n\u003cli\u003eDual Channel Design: Provides two independent inverting buffers in one package, saving board space.\u003c\/li\u003e\n\u003cli\u003e3-State Outputs: Enables bus sharing and isolation, critical for multiplexed systems.\u003c\/li\u003e\n\u003cli\u003eLow-Power Schottky Technology: Offers a balance of speed and power consumption for 5V systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e5V Bus Line Driving\u003c\/h3\u003e\u003cp\u003eThe DM74LS240SJ is ideal for driving long bus lines in 5V TTL systems. Its 3-State outputs allow multiple devices to share the bus, with the output enable controlling which device is active.\u003c\/p\u003e\u003ch3\u003eMemory Address Buffering\u003c\/h3\u003e\u003cp\u003eIn microprocessor systems, this dual buffer can invert and buffer address lines to memory chips. The high sink current (24mA) ensures strong signal drive for capacitive loads.\u003c\/p\u003e\u003ch3\u003ePeripheral Interface Isolation\u003c\/h3\u003e\u003cp\u003eUse it to isolate the system bus from peripheral devices. The 3-State outputs can be disabled to disconnect peripherals during power-up or testing.\u003c\/p\u003e\u003ch3\u003eIndustrial Control Logic\u003c\/h3\u003e\u003cp\u003eIn industrial controllers, this IC can invert and buffer control signals from PLCs to actuators. Its 0°C to 70°C temperature range suits most indoor industrial environments.\u003c\/p\u003e\u003ch3\u003eTest and Measurement Equipment\u003c\/h3\u003e\u003cp\u003eFor bench test setups, it can buffer and invert signals from a DUT to a logic analyzer. The 3-State feature allows multiple test points to be multiplexed.\u003c\/p\u003e\u003ch3\u003eData Communication Interfaces\u003c\/h3\u003e\u003cp\u003eIn legacy data communication systems, this buffer can drive and invert parallel data lines, ensuring proper signal levels for receivers.\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\u003e74LS\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\u003eBuffer, Inverting\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eNumber of Elements\u003c\/td\u003e \t\u003ctd\u003e2\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eNumber of Bits per Element\u003c\/td\u003e \t\u003ctd\u003e4\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\u003e15mA, 24mA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Supply\u003c\/td\u003e \t\u003ctd\u003e4.75V ~ 5.25V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOperating Temperature\u003c\/td\u003e \t\u003ctd\u003e0°C ~ 70°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\u003eSurface Mount\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackage \/ Case\u003c\/td\u003e \t\u003ctd\u003e20-SOIC (0.209\", 5.30mm Width)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSupplier Device Package\u003c\/td\u003e \t\u003ctd\u003e20-SOP\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 DM74LS240SJ?\u003c\/dt\u003e\n\u003cdd\u003eA: It is from the 74LS (Low-Power Schottky) family, operating at a nominal 5V supply.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the function of this IC?\u003c\/dt\u003e\n\u003cdd\u003eA: It is a dual inverting buffer with 3-State outputs, designed for bus line driving and signal inversion.\u003c\/dd\u003e\n\u003cdt\u003eQ: How many channels does it have?\u003c\/dt\u003e\n\u003cdd\u003eA: It has 2 channels, each providing an inverting buffer path.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the output type?\u003c\/dt\u003e\n\u003cdd\u003eA: The outputs are 3-State, allowing high, low, or high-impedance states for bus isolation.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the operating voltage range?\u003c\/dt\u003e\n\u003cdd\u003eA: The supply voltage range is 4.75V to 5.25V, typical for 5V TTL logic.\u003c\/dd\u003e\n\u003cdt\u003eQ: What package is available?\u003c\/dt\u003e\n\u003cdd\u003eA: It is available in a 20-SOIC (0.209\", 5.30mm Width) package.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Fairchild Semiconductor","offers":[{"title":"Default Title","offer_id":53665867170081,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/hqickey.com\/fr\/products\/dm74ls240sj","provider":"HQICKEY","version":"1.0","type":"link"}