SN74ABT657ANSRG4

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SN74ABT657ANSRG4 is an essential part of modern day logic devices and is among the most popular integrated circuits in the world. It is classified as a Logic – Buffers, Drivers, Receivers, Transceivers and has applications across a wide range of industries. This article explains the application field and working principle of the SN74ABT657ANSRG4.

The SN74ABT657ANSRG4 is a low-power CMOS multiplexer/demultiplexer, meaning a single Die contains two independent logic functions – a 1-to-4 line multiplexer and a 4-to-1 line demultiplexer. The SN74ABT657ANSRG4 is featured in the popular line of Texas Instruments\' (TI) low power I/O devices, and each of these devices contains a different combination of additional Buffers, Receivers, Transceivers, and Drivers.

The primary application field of the SN74ABT657ANSRG4 lies in its wide range of data acquisition and signal switching applications. In a typical data acquisition system, Continuous time signal sources such as the analog output of a temperature sensor, or the output of a frequency meter require multiple inputs. But, considering the various constraints, such as size and weight, it is not always possible to add multiple channels. This where the multiplexing capabilities of the SN74ABT657ANSRG4 and other low power I/O devices come in handy.

Apart from its wide range of applications, the SN74ABT657ANSRG4 is also small and hence, cost effective. The SN74ABT657ANSRG4 is also designed to provide optimum performance in low-voltage and low-power applications, where the power supply voltage can go as low as 1.5V. This makes the SN74ABT657ANSRG4 well-suited for portable devices, such as cell phones and PDAs.

Now let’s have a look into the working principle of the SN74ABT657ANSRG4 logic function. The SN74ABT657ANSRG4 consists of a 32-pin dual in line package and offers a maximum low-power dissipation of 2.2mW. The inputs of the device are “select” (S1 and S0, pins 6 and 7 respectively) and “data” (D0 to D3). The select and data inputs then connect to the output (Y0 to Y3).

The SN74ABT657ANSRG4 multiplexer works on a simple concept of selection. When S1 and S0 are low, the output is connected to the first Data input (D0). When S1 is low, and S0 is high, the output is connected to the second Data input (D1). When S1 and S0 are both high, the output is connected to the fourth Data input (D3). In the same way, the demultiplexer works as a channel selector, selecting one of four inputs and sending it to the output.

The SN74ABT657ANSRG4 also features buffering circuitry on the inputs and outputs. This is to enable the device to operate over a wider range of temperatures and power supply voltages. However, the output buffer is disabled when the device is powered down to reduce power consumption.

The SN74ABT657ANSRG4 is a versatile, low-power CMOS multiplexer/demultiplexer that is suitable for a wide range of data acquisition and signal switching applications. It is a great choice for systems where size and power consumption are important considerations. Its multiplexing and buffering capabilities make it a great choice for portable devices, where low power and low power dissipation are a must.

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