74HCT139DB,112

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Logic - Signal Switches, Multiplexers, Decoders

74HCT139DB,112 is a type of integrated circuit that belongs to a larger family of logic-signal switches, multiplexers, and decoders. It is widely used in many electronic circuits and is often used as a circuit element for interfacing between logic levels and for multiplexing and demultiplexing signals.

The 74HCT139DB,112 is a dual-channel 4-to-16 line decoder/demultiplexer with active-low outputs and a common active-low enable line. It is a high speed TTL compatible device, with a typical propagation delay of 10 ns and a power dissipation of 35 mW. The device has 16 active-low outputs that are enabled by an active low enable (usually E) line, and provides a 4-to-16 line decode capability with active-low outputs.

This chip has a very wide range of applications. The primary application is for multiplexing and demultiplexing signals. It can be used for inter-level logic interfacing, for example, for interfacing between 5V TTL levels and the 3.3V levels often used in modern integrated circuits such as microcontrollers. It can also be used for data acquisition, for example, for multiplexing input signals from different sensors. It is often used as an interface for keypads, for scanning a key board. Finally, it can be used for memory address decoders, for example, for decoding a binary address encoded into an address bus.

One of the advantages of the 74HCT139DB,112 is its simple and straightforward design. The chip consists of two 4-to-16 line decoders and an active-low enable pin. The two decoders are controlled by the E (enable) pin, which is active-low. When the E pin is low, the outputs of both decoders are active, and when the E pin is high, both decoders are inactive. The inputs of the decoders are active-low. Each decoder accepts four inputs and results in 16 active-low outputs. This means that a high input on an input line will result in an active-low output on the corresponding output line.

The 74HCT139DB,112 is a very versatile chip and can be used for a wide range of applications. It is widely available, low cost and has a very simple and easy to understand design. This makes it an ideal choice for applications such as data acquisition, multiplexing and demultiplexing, and memory address decoding.

The specific data is subject to PDF, and the above content is for reference