74AC251SJ

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Logic signal switches, multiplexers, and decoders are important components used to control signal routing and data manipulation in modern digital systems. One of the most commonly used and versatile of these components is the 74AC251SJ.

The 74AC251SJ belongs to Texas Instruments’ advanced logic family and is designed to provide high speed signal switching and routing. It is a 4-input multiplexer/demultiplexer that has several features that make it a valuable tool in digital systems.

The 74AC251SJ has four independent non-inverting channels, each with a common data input, a select input, and a common output. This allows the device to act as both a multiplexer, where multiple data inputs are combined on one channel to a common output, and demultiplexer, where one input is routed out to multiple outputs. The select input allows for an arbitrary assignment of the data inputs to the data outputs.

In addition, the 74AC251SJ has a tri-state output host control. This control provides the ability to turn off devices connected to the common output, so that it may be used in a variety of applications. The tri-state output uses an enable input, which supplies a logic low signal to activate the data output.

One of the key advantages of the 74AC251SJ is its speed. The device is designed to provide propagation delays of 5.5 nanoseconds (ns) typical at 5V operation, allowing for fast and reliable signal switching. This makes the device suitable for a wide range of high-speed applications.

The 74AC251SJ can be used in a wide range of applications, including high-speed data and address routing, analog signal switching, interconnection between microprocessors, and demultiplexing operations. The device’s high speed makes it suitable for many high speed operations and for systems that require maximum switching speed.

The device’s small size and high speed also make it well-suited for space- and power-limited systems. The device is available in both plastic and ceramic packages, making it suitable for a variety of applications.

The 74AC251SJ is a versatile and reliable signal switching solution for modern digital systems, offering fast switching and signal routing for high-speed applications. Its small size, high speed, and tri-state output host control make it suitable for a variety of applications, including data and address routing, analog signal switching, and interconnection between microprocessors.

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