The SN74ALS158NS from Texas Instruments is a high-performance, quadruple 1-of-2 data selector/multiplexer that belongs to the 'ALS' series of logic devices. Designed to operate from a 4.5 V to 5.5 V power supply, this device is optimized for professional and commercial applications requiring fast and reliable digital switching.

Key Features

• Logic Type: Data Selector/Multiplexer
• Number of Circuits: 4
• Number of Inputs: 2 per circuit
• Number of Outputs: 1 per circuit
• Output Type: Single-Ended
• Function: Multiplexing data from two sources for each circuit
• Operating Voltage: 4.5 V to 5.5 V
• Package / Case: SOP-16 (Small Outline Package)
• Operating Temperature Range: 0°C to 70°C

With its high-speed switching capabilities, the SN74ALS158NS is particularly well-suited for implementing logic functions, such as data routing and control signal multiplexing. It can be used in a wide variety of digital applications, including computers, data processing, telecommunications, and control systems.

Functional Description

The device features four individual 1-of-2 data selectors/multiplexers, each with separate data input lines (1A, 1B, 2A, 2B, 3A, 3B, 4A, 4B) and output lines (1Y, 2Y, 3Y, 4Y). Selection of the data sources is controlled by a common Select input (S) and an Enable input (G) for all four circuits. When the Enable input is low, the selected data from one of the inputs is passed to the output. If Enable is high, all outputs are in the high-impedance state, effectively disconnecting the outputs from the circuit.

The SN74ALS158NS is characterized for operation over the full military temperature range of 0°C to 70°C. Its SOP-16 packaging ensures a compact footprint, making it suitable for use in space-constrained applications. The device's high-speed performance and low-power consumption make it a reliable choice for designers looking to optimize their digital systems.

For detailed specifications and application notes, users are encouraged to consult the official Texas Instruments datasheets and product guides.