DM74LS156M

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Signal switching or Multiplexing and decoding are common techniques used in digital electronics for selectively routing or decoding a signal or multiplexing multiple signals in order to reduce the number of available inputs and outputs. The DM74LS156M is a IC device designed to do exactly that, standing for Decoders, Multiplexers and Signal Switches.

The DM74LS156M is a quad 2-input multiplexer which can be used to multiplex two parallel inputs with each channel having its own enable input, allowing it to select the desired input signals. The two selected inputs are not only multiplexed, but they are also decoded, ensuring they are in the correct logic level before they are switched over. The multiplexer also includes an output enable control, allowing the inputs to be enabled/disabled as required. The outputs can be set to one of four different logic states.

The DM74LS156M is designed to be operated in TTL environment and can operate at wide range of power supply voltages from 3.4V to 15V. It is available in sixteen pin packages and is ideal for applications where signal switching or multiplexing and decoding are required, such as communication systems, logic circuits, and data processing systems.

The working principle of the DM74LS156M is quite simple. It is designed to have two inputs, A0 and A1, that are used to select the desired signal. It also has two control inputs, control input 0 and control input 1, allowing it to switch between the two inputs. The two control inputs can be used to enable/disable the multiplexer and to control the logic level of the output. The output is set to a logic level based on the logic level of the inputs.

The DM74LS156M is a versatile IC device that can be used in a wide range of applications such as digital communication systems, logic circuits, and data processing systems. It is designed to switch and multiplex signals, making it ideal for applications where multiple inputs and outputs are required. The device is also designed to operate in a wide variety of power supply voltages, making it an ideal choice for applications where power supply voltages cannot be controlled. The device’s simple working principle makes it a cost-effective choice for applications where signal switching or multiplexing and decoding are required.

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