ON Semiconductor DM74S257N: Quad 2-Input Multiplexer with 3-State Outputs

The ON Semiconductor DM74S257N is a high-performance, quad 2-input digital multiplexer that features three-state outputs, designed to meet the demanding needs of high-speed data processing systems and telecommunications. This integrated circuit is part of the advanced Schottky TTL family, which is renowned for its fast switching speeds and low power consumption.

The DM74S257N comes in a 16-pin plastic DIP package, making it suitable for a wide range of applications, including industrial, commercial, and educational environments. Each of the four multiplexers has two input lines (A and B), one output line (Y), and an individual select input (S). By applying the appropriate logic to the select input, the user can choose which of the A or B inputs is routed to the corresponding output.

One of the key features of this device is its three-state outputs, which allow the outputs to assume a high impedance state in addition to the conventional low and high logic levels. This capability is crucial for implementing bus-oriented systems, as it enables multiple outputs to be connected to a common bus without causing conflicts, provided that only one output is active at any given time.

The ON Semiconductor DM74S257N operates over a wide voltage range of 4.75V to 5.25V, which is typical for TTL logic devices. This ensures compatibility with a broad spectrum of TTL logic families. Furthermore, the device boasts a typical power dissipation of 19mW per package, contributing to energy-efficient designs.

With its fast switching speeds, the DM74S257N is capable of handling clock frequencies up to 125MHz, making it an excellent choice for high-speed data multiplexing. Its robust construction and ON Semiconductor's commitment to quality mean that the DM74S257N is a reliable component for any electronic system requiring precise control over data flow.

Overall, the ON Semiconductor DM74S257N multiplexer is a versatile and reliable choice for designers looking to implement efficient data routing in their digital systems, with the added benefit of three-state output flexibility for bus-connected applications.