ON Semiconductor DM74LS157N Quad 2-Line to 1-Line Data Selectors/Multiplexers

The ON Semiconductor DM74LS157N represents a high-performance, quad 2-line to 1-line data selectors/multiplexers, designed to select one of two data sources for each output. It is a versatile component used in a variety of digital applications where data routing is essential. This integrated circuit is part of the 74LS series, which is known for its low power consumption and high-speed operation.

The DM74LS157N features four identical units that can multiplex two separate data lines for each unit. It operates with a dual 4-channel configuration, which means it can handle four sets of two inputs to produce four outputs. This IC is particularly useful for implementing Boolean functions, facilitating efficient data management in complex digital systems.

Each multiplexer has its own select input, which determines which of the two inputs will be passed through to the output. Additionally, there is a common enable input that can be used to turn off all the outputs simultaneously, thus placing the outputs in a high-impedance state. This feature is particularly useful when multiple DM74LS157N chips are connected in parallel to prevent bus contention.

Constructed with bipolar technology, the DM74LS157N offers a robust design that ensures reliable operation even in demanding conditions. It is available in a standard 16-pin DIP (Dual In-line Package), making it easy to integrate into a wide range of electronic circuits. The chip operates within a supply voltage range of 4.75V to 5.25V, which is typical for LS (Low-power Schottky) TTL (Transistor-Transistor Logic) devices, providing compatibility with other TTL family components.

Key specifications of the DM74LS157N include a typical power dissipation of 19 mW per gate and a propagation delay time of approximately 15 ns, making it a fast and efficient solution for data selection tasks. Its operating temperature range from 0°C to +70°C ensures stable performance across various environmental conditions.

Whether used in multiplexing applications, data routing, or as part of a more complex digital system, the ON Semiconductor DM74LS157N provides a reliable and efficient solution for designers looking to optimize their data handling capabilities.