MC74HC139ADTR2G

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The MC74HC139ADTR2G is a type of logic integrated circuit that belongs to the family of logic signal switches, multiplexers, and decoders. It is an 8-input/2-output logic select device that is used to switch either a single data line between two inputs or two data lines between four inputs. This type of device is a low power CMOS integrated circuit that incorporates advanced circuit and thermal design techniques to minimize the current draw and the dissipation of heat.

This device contains two logic selectors with common select and enable inputs. Each logic selector contains four data inputs (I0 -I3) and two data outputs (Q0 and Q1). The select inputs (S0 and S1) determine which one of the eight input lines is connected to the two outputs. The enable (E) input is used to shut off both the selectors and put the outputs in the high-impedance state.

In order for the device to work, a valid input sequence must be applied to the input lines, which determine which of the four output registers the device will use. When the input signals are applied, the select and enable inputs (E, S0, and S1) are used to control the logic state of the device. The first logic selector will be enabled if E is low and S0 and S1 are both high. The second selector will be enabled if E is low and S0 is high and S1 is low. If E is low and both S0 and S1 are low, then both selectors will be enabled.

Additionally, the output stages of the MC74HC139ADTR2G contain only two transistors and are used to drive the common logic elements of the gate array. When the logic selectors are enabled, the output drivers pull their associated output to the appropriate logic state. When the logic selectors are disabled, the outputs from the drivers are high impedance and no output is switched.

The MC74HC139ADTR2G is used primarily in applications where a great number of signals will occupy the same lines and then need to be switched quickly. This is especially useful for systems that require low power operation and highly integrated solutions. Applications such as communications systems, digital signal processing, wireless data and networking, and consumer electronics are all potential uses for this device.

By using the MC74HC139ADTR2G, companies and individuals can save time, energy, and money in the design, implementation, and operation of their electronic systems. This device offers an efficient and economical way to switch a large number of inputs between multiple outputs while providing an interface that is easy to develop and debug.

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