DM74LS258BN

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 and Decoders are integral parts of many digital systems. One of the most commonly used devices is the DM74LS258BN, a Bipolar 8-Stage 2-4 Line Multiplexer/Demultiplexer. This application note provides an overview of the device, its application field and its working principle, and offers some design tips.

The DM74LS258BN is an 8-channel, 2-4 line multiplexer/demultiplexer device that offers several advantages over other devices. It has a low power operation and superior switching speed, providing a low noise, low-cost solution for digital systems. It has eight independent analog multiplexers/demultiplexers with two input and four output lines each. It provides a data selection of up to 256 combinations. The device also provides a wide temperature specification and a guaranteed switching speed.

The DM74LS258BN can be used in applications needing to select data and/or logic signals. Its multiplexer/demultiplexer architecture makes it ideal for data multiplexing/demultiplexing applications such as broadcast video, audio, and data. It can also be used in bus interfacing applications, where the device ensures accurate switching of data and/or logic signals. For example, the DM74LS258BN can be used to interface between a processor bus and a memory bus for data selection/retrieval or for memory address decoding.

The working principle behind the DM74LS258BN is relatively straightforward. It uses a combination of logic circuitry and control lines to perform data multiplexing/demultiplexing. First, a control signal is applied to the DM74LS258BN to select the data signals (A, B, C, and D) that the device will be switching. Then, the control signal is used to select which of the eight multiplexers/demultiplexers will be active. Finally, the multiplexer/demultiplexer is used to route the data signals to the selected outputs.

To make best use of the DM74LS258BN, it is important to understand the device\'s capabilities. For example, the device can operate in both multiplexer and demultiplexer configurations, and can use either a 4-line or a 2-line data signal. Depending on the application, the device must be configured to ensure the signal integrity. In addition, it is important to ensure that the power supply is sufficient to provide the proper voltage levels to the inputs/outputs. Finally, a careful layout is also essential, since closely spaced traces can increase noise levels.

In conclusion, the DM74LS258BN can provide efficient signal switching for data multiplexing/demultiplexing applications. With its low power operation, superior switching speed, and wide temperature specification, it can provide a low-cost, high-performance solution. But, careful design and layout are essential to ensure proper performance. By following the above-mentioned design guidelines, designers can make the most of this versatile device.

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