SN74AHC138PWR

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SN74AHC138PWR is a digital 3-to-8 line decoder/demultiplexer that is widely used in a variety of applications. It belongs to the Logic - Signal Switches, Multiplexers, Decoders category, and it is widely used in PCB designs due to its small size and low power consumption. The SN74AHC138PWR is a 3-pin digital decoder/demultiplexer that can decode up to 8 lines of digital inputs. It has 3 x 64-bit active-low (output enable) inputs and 8 x active-low (active-high) outputs. The outputs are controlled by two parallel active-low enable inputs, one of which is used to choose the 3-bit address. By connecting these 3-bit active-low address inputs A0-A2 to high voltage or low voltage, the corresponding output can be enabled or disabled. The SN74AHC138PWR is typically used to decode 4-bit binary inputs, but it can also be used to convert 4-bit binary inputs into a one-hot binary (1-hot) code. This means that when one output is high and the other seven outputs are low.

The SN74AHC138PWR device can be used in a variety of applications, such as multiplexers, decoders, logic switches, and data converters. In multiplexers, the SN74AHC138PWR can be used to select from a group of digital inputs, depending on the address that is applied to the device. In logic switches, the device can be used to selectively enable or disable devices, depending on the address that is applied. In data converters, the SN74AHC138PWR can be used to convert a three-bit wide binary number into a one-hot binary code.

The working principle of SN74AHC138PWR is based on three-state logic. Each output of SN74AHC138PWR is either in “low”, “high” or disabled state when its respective enable inputs are used simultaneously. The output is enabled when the two enable inputs are used simultaneously. However, the interaction between two enable inputs and the corresponding output depends on which input takes the highest priority. If the enable inputs are “low”, then the output will be “low” and vice versa.

In addition, the SN74AHC138PWR has an internal protection circuit that keeps the outputs from turning on if the enable inputs are both “high”. This feature makes sure that the device does not short any of the output pins. The SN74AHC138PWR also has an internal oscillator that helps reduce power consumption.

Overall, the SN74AHC138PWR is a versatile chip that can be used in many applications due to its low power consumption and small size. It can be used in multiplexers, decoders, logic switches, and data converters. In addition, it has a number of advanced features such as internal protection circuits, oscillators and three-state logic that make it very useful in a wide range of applications.

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