74VHC393N

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The 74VHC393N is a high performance, low power, quad 2-input non-inverting Schmitt trigger. This device is a digital logic device that finds application in counters, dividers, and other digital logic applications, providing both temporal and logical isolation for digital systems.

The device provides a wide range of control and performance features including the ability to control input and output pin interface, low-voltage HS (HV)THs, low static power consumption and high speed operation. The74VHC393N also has low operating power and provides protection for the application to enable uninterrupted operation.

The 74VHC393N is a 4-bit CMOS device containing four separate Schmitt triggers. The Schmitt trigger is a common form of digital logic circuit whose output responds to an input signal whose threshold voltage is generated internally, eliminating the need to precisely define the threshold voltage externally. The Schmitt trigger generates an output of either 0 or 1, depending on the state of the input.

This device is ideal for applications such as digital clock dividers, frequency dividers, counter dividers and other logic applications that require high-speed switching and low-voltage operation. Internally, the circuit of 74VHC393N is organized in the form of a 4-bit register consisting of four input flip-flops. Each flip-flop contains two inputs; positive and negative. The positive input serves as the input to the device and the negative input enables the device to be held in reset state.

When used as a counter or divider, the 74VHC393N is used to divide an input frequency into a desired output frequency. This is achieved through the active nodes of the internal flip-flop of the device. The positive and negative inputs of the flip-flop are conditioned and the output of each flip-flop is connected to the input of the next flip-flop. When the input clock pulse is applied, the flip-flop will toggle its output voltage, which in turn sets the output state of the next flip-flop. Therefore, each output will represent a particular state of the signals after a given number of clock cycles.

In addition to its low power dissipation, the 74VHC393N devices have low on-resistance and they offer better thermal stability due to the decreased integration of power transistors in the device. This reduces undesirable circuit effects like ringing and noise which, when present, can adversely affect the functioning of the digital logic system.

Furthermore, the device does not require any additional drivers because of its comparatively high performance. Also, the 74VHC393N devices can be isolated from each other by using separate reset pins, thereby allowing one device to be used in various applications.

In conclusion, the 74VHC393N is a low-power, high performance Schmitt trigger device that provides many advantages for applications like counters, dividers and other digital logic applications. It can be effectively used for both temporal and logical isolation, and it features low static power consumption and low operating power along with protection from environmental disturbances.

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