SN74F157AN

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The SN74F157AN is a type of multiplexer, which is a digital device used to access a data line or several data lines when the value of a control signal is received. This multiplexer is manufactured by Texas Instruments Inc and it is a quadruple 2-input data selector/multiplexer. It is made of TTL (Transistor-Transistor Logic) that has low power consumption, high speed and low fan-out. The SN74F157AN has four data selector multiplexer circuits that can determine the selection of one of two data sources depending on the state of a selection signal.

The function of a multiplexer can be better understood in terms of its three inputs: Data Inputs 0 and 1, Select Signal and the Outputs. Data Inputs 0 and 1 are two binary signals that the multiplexer will interpret according to the logic of the Select Signal. Depending on this logic, it will select one of the two binary data inputs, which will then be passed as the Output. The Select Signal uses two states – a high state and low state – to determine which data input will be sent as the output.

The SN74F157AN multiplexer is packaged in an SO14 (small outline 14 pin) plastic package that has dual in-line pins allowing easier connection and routing. Its logic characteristics have very low power dissipation and the multiplexer has an operating temperature range of 0 to 70°C. The device also has an output enable which is functional only when it is HIGH and a disable when it is LOW.

The SN74F157AN has connection pins labeled when viewed from the solder side. Pin 8 is the select signal and pins 2 and 3 are data inputs 0 and 1, respectively. Pins 10, 12, 6 and 4 are the outputs of the multiplexer. When the high signal of the select signal is present at pin 8, it selects data input 0 to the output at pins 10, 12, 6 and 4 respectively. Conversely, when the low signal of the select is at pin 8, it selects data input 1, which will be outputted at those four pins.

The SN74F157AN is used in multiple applications like data handling, data transmission and memory usage. It is useful in implementing logic functions like an address decoder, data multiplexer, data selector, encoder and arithmetic logic circuits. This multiplexer is able to store one bit of data and can be used in hardware designs to create circuits and devices that can process digital inputs and outputs effectively.

In summary, the SN74F157AN is a quadruple 2-input data selector/multiplexer manufactured by Texas Instruments and available in an SO14 (small outline 14 pin) plastic package with dual in-line pins for easier connection and routing. It is a logic device that has two data inputs, one select signal and four output pins which allow the selection of one of two data sources depending on the state of the select signal. The SN74F157AN is suitable for use in multiple applications and is commonly used to implement logic functions.

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