MC74VHC139DR2G

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MC74VHC139DR2G is a device in the Logic - Signal Switches, Multiplexers, Decoders family. It is a dual 2-to-4-line decoder/demultiplexer that provides the ability to select and decode address values encoded in the upper or lower four address lines. The device allows for more code address lines than input lines for better address resolution of data. It is fabricated in advanced CMOS process making it ideal for low power applications.

The MC74VHC139DR2G is a two-inputs/four-outputs decoder/demultiplexer device. Each device has two active-low enable (EN1 or EN2) input that is used to enable data flow to any of the four independently selectable output buffers. It has two enable (EN1 and EN2) inputs and four active-high output enable (OE) pins that are used to enable or disable data flow. It also has two active-low data input (A and B) pins that control the data to the four output buffers identified as Q0, Q1, Q2, and Q3.

The device is designed for low power operation and is designed to minimize dynamic power consumption with stand-by CW-off mode. The device’s active-low enable (EN1 or EN2) inputs allow for disabling of the entire device for active power-down. It also has an active-high output enable (OE) pin to further reduce the static power consumption of the outputs.

The MC74VHC139DR2G is capable of decoding two address lines.Two address lines can be used to select which of four output buffers will be enabled or disabled. The address decoding is done with the two active-low enable (EN1 or EN2) inputs and two active-low data (A and B) inputs. The combination of A and B when considered along with the two active-low enable (EN1 or EN2) controls the active-high output enable (OE) and four output buffers.

The MC74VHC139DR2G is widely used in many applications, including data bus multiplexing, address decoding, and computer memory address decoding. It is designed to be used as a three-state buffer to demultiplex four different values from two address lines. It can also be used for low power switching applications as well as for buffering and generating four outputs from two address inputs.

In summary, the MC74VHC139DR2G is a versatile logic device capable of performing multiple functions and is used in many applications. It is an ideal device for low power applications as it is designed to minimize power consumption in stand-by mode. It is capable of decoding two address lines and can be used as a three-state buffer for data bus multiplexing, address decoding, computer memory address decoding, and for low power switching and buffering applications.

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