74AVC8T245PW,118

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Logic Translators, Level Shifters are crucial components in any working circuit as they allow signals to be transferred between different voltage domains, and therefore different logic families. The 74AVC8T245PW is one of the most popular level shifters today and is widely used in various application fields where level shifting is required. In this article, we will go into the application fields and the working principle of the 74AVC8T245PW.

Application Field

The 74AVC8T245PW is a popular choice for level shifting as it can conveniently handle 8 bits of data in both directions and can also shift between 1.8V and 3.3V. This makes it a great choice for applications that require voltage levels to be transferred between the two different levels such as when interfacing with a microcontroller or connecting an LCD screen to a device. This level shifter is also widely used in IoT applications, such as connecting to sensors, where the device may not be running the same power supply voltage as the microcontroller or other parts of the system.

The 74AVC8T245PW is also suitable for interfacing with other logic families such as TTL and 5V logic as it can support up to 5V inputs and is also capable of converting signals from low voltage logic and 5V logic. This makes it ideal for applications where multiple logic levels are needed, such as when interfacing with LCD panels.

Working Principle

The 74AVC8T245PW is a bidirectional 8-bit bus level shifter with configurable voltage levels. It is designed to shift between devices with different logic families, such as between supply voltages of 1.8V and 3.3V and between logic families, such as between 5V logic and low voltage logic. By configuring the voltage levels, the device is able to detect the relevant logic level and smoothly switch between them.

To arrive at the correct level conversion, the 74AVC8T245PW has two control lines, A0 and A1. By connecting the correct signals to these pins, the device will be able to determine the initial logic level, switch between the two logic levels, and detect the output logic level. This allows the device to shift between 1.8V and 3.3V, TTL and 5V logic, and other logic families.

The device also contains a source-synchronous output enable (OE) line which can be used to enable the device for shifting and also prevent data corruption during level shifting. This line can be integrated into a system\'s timing and flow control protocols, which gives the device even greater flexibility.

Conclusion

The 74AVC8T245PW is a popular choice for level shifting as it offers wide range of configurable voltage levels, allowing it to interface with multiple logic families such as 5V logic and low voltage logic. It can also handle 8 bits of data in either direction, making it a suitable choice for many applications. Its source-synchronous output enable line further adds to its flexibility, allowing it to fit into an existing system\'s timing and flow control protocols. With its wide range of features, the 74AVC8T245PW is certainly a device worth looking into when considering a level shifter for your application.

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