SN74AHCT157DG4

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The SN74AHCT157DG4 is a quad 2-input multiplexer designed for tolerating extremely low input power levels that are disabled when the logic level is equal to or less than 0.5 V. It features low power static CMOS logic with multiplexers, decoders, and memory expansion functions. The SN74AHCT157DG4 is a versatile device used in a wide variety of industrial, consumer, and commercial applications, such as multiplexer selection, address decoding, and for providing an isolated low power control level.

This device has two active-low enable (or chip select) inputs that allow the outputs to be put in a high-impedance state. The SN74AHCT157DG4 will multiplex four data inputs to one output, so that the data on one of the inputs is selected and presented to the output. This device has the ability to tolerate input signals as low as 0.5 V and the output signals do not exceed -0.25 V and 1.25 V.

The SN74AHCT157DG4 works by using a simple circuit composed of transistor-transistor logic (TTL) and CMOS logic, which allows the logic output to be selected from multiple logic inputs. To achieve this, the chip comprises four data input pins, two enable pins, and one output pin. The enable pins are used to select which of the four data inputs will be presented to the output pin. When a low signal is applied to either of the enable pins, it will activate the multiplexer and cause the output pin to be equal to the data input that is connected to it. When both of the enable pins are in a high state, the output pin will remain in a high-impedance state. This allows the output pins to be in a “floating” state, as it is not connected to any of the data inputs.

The SN74AHCT157DG4 is an ideal choice for applications that require multiplexers, decoders, and memory expansion functions. This device is suitable for use in a variety of commercial, industrial, and consumer applications, such as address decoding, signal switching, and providing an isolated low power control level. This device is also suitable for applications where a low power static CMOS logic is required.

In conclusion, the SN74AHCT157DG4 is a versatile device with multiplexer, decoder, and memory expansion functions. This device can tolerate extremely low input power levels and can be used for a variety of commercial, industrial, and consumer applications. The chip’s two active-low enable pins can be used to select which of the four data inputs will be presented to the output pin. This device is an ideal choice for applications that require multiplexers, decoders, and memory expansion functions.

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