74LVQ244SC

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Logic - Buffers, Drivers, Receivers, Transceivers

The 74LVQ244SC is a low voltage, quad buffer/line driver with a 4.5 to 5.5 voltage range from Texas Instruments. It is designed for applications that need simultaneous outputs. The 74LVQ244SC is available in either soldered dual in-line packages or side-brazed small outline or plastic packages, making it a very versatile device.

Application Field

The 74LVQ244SC is used in a wide variety of applications that need simultaneous outputs, such as personal computers and laptops, sound cards, monitors, peripheral controllers, and more. It is also commonly used in applications that require high-speed signal transmissions, such as Ethernet and USB, as well as in communication systems, instrumentation, and medical imaging systems.

Working Principle

The 74LVQ244SC consists of four independent buffer circuits, each with two control inputs and two outputs. It is a memory element that stores a data bit, which is represented by the logic levels at the inputs and outputs. When logic lows are applied to both inputs, the data bit in the buffer will remain unchanged, regardless of the logic level applied to the output.

The control inputs of the buffer are connected to the grounds, which keep the input signals low. The outputs are connected to the voltage supplies, which act as power sources for the circuit, transferring electrical charge to the output pins. Depending on the logic level of the input signals, the logic level at the output can be either low or high. Thus, the data bit stored in the buffer can be changed, allowing different outputs to be produced depending on the input data.

The 74LVQ244SC is also capable of drives various loads, including capacitive, inductive, resistive, and active loads, as it is designed for low voltage operation. This makes it suitable for a wide range of applications, such as high speed buffering, bus driving, and interfacing between devices operating at different voltage levels.

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