74AUP2G126GD,125

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Logic buffers, drivers, receivers, transceivers, and other components play an important role in the realm of electronics. 74AUP2G126GD,125 is one of these important parts, and they are used to improve signal levels and provide better noise immunity. In this article, we will look into the application field and working principle of this component.

Application field

74AUP2G126GD and 125 are logic buffers and drivers. These components are designed to increase the drive capability of logic systems and to improve the signal integrity and noise immunity of the output signals. They are normally used to isolate logic systems from each other. Additionally, their low ground bounce and fast propagation delay make them ideal for applications where high speed operation is needed.

These components are also useful for interfacing between digital and analog components. For example, they can be used to help convert digital signals for analog circuits, or to drive higher current and voltage loads. They are also often used in telecommunications and industrial control systems.

Working Principle

Most logic buffers and drivers use CMOS technology, which means they use two transistors (PMOS and NMOS) connected back-to-back, with the gate and drain of each connected to each other. In this configuration, when the input is low, the drain of the PMOS is pulled to VDD, and the drain of the NMOS is pulled to ground, which results in the output being high. When the input is high, the reverse happens, resulting in the output being low.

The 74AUP2G126GD and 125 employ enhancement mode logic cells, meaning they require an extra input signal to turn the output on. This is accomplished by providing an additional input signal to the gate of the PMOS, which turns it on and in turn turns the output on. In this configuration, when the input is high, the PMOS is on, and the NMOS is off, resulting in the output being low. When the input is low, the PMOS is off, and the NMOS is on, resulting in the output being high.

The 74AUP2G126GD and 125 also feature a Schmitt trigger input, which is a type of amplifier circuit with hysteresis that can improve noise immunity, meaning they can differentiate between transitions in a signal that are due to noise, and those that are due to legitimate signals.

These components can also feature open drain outputs, meaning they can be connected to multiple outputs and the outputs will still present the same signal. This is useful in cases where multiple devices need to be driven with the same signal, such as in a bus-oriented system.

Conclusion

In conclusion, the 74AUP2G126GD and 125 are logic buffers and drivers that can be used to increase the drive capability of logic systems and improve signal integrity and noise immunity. They are commonly used to isolate logic systems from each other, and to interface between digital and analog components. Additionally, they feature a Schmitt trigger input which can improve noise immunity, and open drain outputs which can be used to drive multiple devices with the same signal.

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