SN7406DR

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Logic gates and inverters are used to process digital information and are a fundamental part of integrated circuit technology. The SN7406DR is an integrated circuit (IC) containing a set of six 74LS-family TTL inverters, each with two individual inputs and one common output for a total of 12 inputs and six outputs. The SN7406DR is designed for usage in low-power circuits and operates on supplies of single polarity from 5 volts up to 15 volts.

Application Field Features

The SN7406DR is a versatile, low-power device used for implementation of complex logic functions in many settings. It can be used for a variety of logic purposes and applications, including combinatorial logic, logic gates, latches, multiplexers, and logic arrays. Additionally, the SN7406DR is used in digital circuits in myriad devices and systems, ranging from desktop computers to mobile phones and internet of things (IoT) netwo rks. The SN7406DR also requires a reduced current flow compared to earlier versions, enabling system designs to have a low power usage.

Working Principle

The SN7406DR follows the same working principle as other TTL inverters: each of its six inverters, or one-bit processing devices, includes two logic inputs, “A” and “B” and one output, labeled “Y”. Its "wide range minimum output swing" characteristics make it an ideal choice for applications with large voltage swings. The logic level at output Y is (A) for A=B and 0 for A‐B. In other words, the output is 1 when the input is 0 and vice versa. Each of the input signals is compared to the other and then the desired output state is adjusted accordingly.

The 9-bit output from the SN7406DR will provide direction control to all other channels, which will then interpret the input data in the memory of the application. The output is then fed to an appropriate logic block, depending on the application type. In some cases, the logic block may include a latch, or flip-flop, an S-R latch, or a flip-flop with enable/disable paths. The sense and enable inputs of a latch are connected to the SN7406DR and then the outputs are separated and decoded. In other cases, multiplexers or a digital bus may be used instead.

Conclusion

The SN7406DR is an ideal choice for low-power logic applications and can be used for a variety of purposes. It features a wide range of minimum output swing characteristics and can operate on supplies of single polarity from 5 volts up to 15 volts. Additionally, its 9-bit output provides direction control for further interpretation of input data in the memory of the application. Thus, owing to its low power consumption and versatility, the SN7406DR is widely used in digital circuits ranging from desktop computers to mobile phones and internet of things (IoT) networks.

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