SN74HC138DRG4

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The SN74HC138DRG4 is a 3 to 8 line high-speed decoder/demultiplexer which utilizes silicon gate CMOS technology and enforces high speed operation and low power dissipation. It comprises a low power Schottky TTL (LSTTL) compatible interface, buffered 3 line and 8 line outputs, active low outputs, and a high impedance active high enable. This high-frequency multiplexer is used to select one among several data sources by decoding the given binary information. It is an enhanced version of the standard 74HC138/SN74HC138, executing higher speed and features low power, wider noise margins, and low quiescent current.

The SN74HC138DRG4 is used for a multitude of industrial applications, such as digital systems, medical devices, computers, robotics, robotics systems, automation systems, data routing systems, and electronic circuits. Particularly, it is a great choice for high speed data multiplexers, automatic voltage controllers, and low cost switching systems. Due to its low cost and high power efficiency, it is preferred over other component-level applications.

The SN74HC138DRG4 has a few different application fields, but primarily carries out data demultiplexing. The operating voltage is between 2.0 to 6.0 volts, which allows the component to be used effectively in low power systems while maintaining high speed. The logic levels of this integrated circuit are compatible with both TTL (SPDT) and CMOS logic level output requirements.

The working principle of the SN74HC138DRG4 is simple and efficient. It contains a 3-line binary (A, B, and C) input and 8 active low outputs (O0 to O7). It takes the three binary inputs for a given input value, and uses demultiplexing to determine which data source to route the response to. When enabled, the chip acts as a demultiplexer, placing the output on one of eight active low outputs (depending on the situation) corresponding to a specific binary input (see timing diagram). When disabled, all Outputs will be in the high logic level. This type of logic lever switch is used to direct the output from one of multiple possible sources, depending on the given input value.

The SN74HC138DRG4 is a high voltage, low current multiplexer ideal for a wide range of applications. It offers low power consumption, high speed operation, and buffered 3 line and 8 line outputs. With its low cost, superior performance, and wide compatibility with both TTL and CMOS logic, this integrated circuit is ideal for a variety of applications, such as automation systems, medical devices, data routers, and electronic circuits.

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