74HCT147N,652

Logic - Signal Switches, Multiplexers, Decoders

When switching electronic signals, multiplexers and decoders are helpful for converting digital signals. The 74HCT147N,652 is a logic device which provides an ideal solution for this purpose. It is a Quad 3-to-8 line low-power decoder multiplexer, with 3 address inputs and 8 active low data outputs. It is designed to interface with common logic levels such as 5V TTL, 3.3V and CMOS.

Application Field

The 74HCT147N,652 is targeted to process 3-to-8 line multiplexing applications, enabling a small amount of addressable data to be transmitted to various logic gates. It derives the parallel outputs from the address lines with the help of an enable. A typical application of the 74HCT147N,652 involves selecting an input route between two clocks, a digital signal or an 8-bit data line. Other applications include coding for digital control, for example for direct inputs in process control or interfacing different logic systems.

Working Principle

The address input is responsible for selecting the output from the decoder. It works in the same way as a multiplexer, the 3-bit address input serves to select from 8 channels from 0 to 7. When the enable input is a high level, the output of the active low data is enabled irrespective of the conditions at the address input. A logical 0 at the enable input, disables all the outputs regardless of the conditions at the address input. All the outputs become high-impedance regardless if the input address is determined by the enable. When an address is applied, the corresponding output will be active low.

Conclusion

The 74HCT147N,652 is a useful logic device for connecting different logic systems, process control, as well as other applications. It provides a simple way of coding and offers a powerful, yet extremely flexible solution for select routing and data selecting. Therefore, the 74HCT147N,652 is a great way to connect digital signals, enabling them to interact reliably and quickly.