SN74AHC139PWR

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Logic- Signal Switches, Multiplexers, Decoders form an integral part in digital circuit and are used for various functions. SN74AHC139PWR is one such device and it is used in wide applications. The device is a dual 2-4-decode shown in figure.

The working of the SN74AHC139PWR is very simple and is as follows, Two active-low inputs A and B determine which of the four outputs are active. Output Y0 is active when A and B are both low. Output Y3 is active when both A and B are high. Outputs Y1 and Y2 are active when A and B are different.

The device has the following features:

• Wide operating voltage range: 2.7V to 6.5V
• Output drive capability: 24 mA
• Low current consumption
• High noise immunity
• High speed operation
• Low input capacitance

One of the important applications of SN74AHC139PWR is in remote controllers for TVs and other audio-visual equipment. It is used in this application to detect the buttons pressed. The remote controller consists of a transmitter and a receiver. The transmitter contains keys, buttons, switches and a microcontroller. The receiver is a receiver IC which contains a demodulator and a decoder, and the SN74AHC139PWR is used as the decoder.

On pressing the buttons on the transmitter, the microcontroller will send a signal to the receiver. The receiver IC receives this signal and passes it to the demodulator, which decodes the signal and passes it to the decoder which is the SN74AHC139PWR. The SN74AHC139PWR will then process the signal and its outputs will be active corresponding to the buttons pressed.

The SN74AHC139PWR can also be used in other applications such as security systems, traffic control systems, safety systems, etc. As it has features such as wide operating voltage range, low current consumption, and high noise immunity, it is suitable for such applications.

The SN74AHC139PWR is an important component in various digital circuits and has a wide range of applications. Its working is very simple, and its features make it suitable for various applications.

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