The NTE74157 is a Quad 2-Line to 1-Line Data Selector/Multiplexer. This integrated circuit from NTE Electronics selects one of two 4-bit data sources based on a select input and routes the selected data to the output. It's a versatile component used in digital logic circuits for data routing, multiplexing, and data selection.

Applications

• Data routing and selection in digital systems
• Multiplexing data from multiple sources onto a single bus
• Address decoding
• Logic function implementation
• Control systems

Features

• Quad 2-to-1 multiplexer configuration
• Separate enable input for each multiplexer
• Low propagation delay
• TTL compatible inputs and outputs
• Wide operating voltage range
• Available in DIP and SOIC packages

Benefits

• Simplified data routing: Allows for easy selection and routing of data from multiple sources.
• Reduced component count: Integrates multiple multiplexers into a single package, saving board space.
• Improved system performance: Low propagation delay ensures fast data transfer.
• Flexible system design: Separate enable inputs allow for individual control of each multiplexer.
• Easy integration: TTL compatibility simplifies interfacing with other logic circuits.

Additional Details

The NTE74157 consists of four independent 2-input multiplexers, each with its own select input and enable input. When the enable input is low, the multiplexer is active and the output reflects the selected input. When the enable input is high, the output is forced to a low state, regardless of the select input. This feature allows for easy disabling of the multiplexer when it is not needed.

The select input determines which of the two data inputs is routed to the output. When the select input is low, the A input is selected. When the select input is high, the B input is selected. The NTE74157 is commonly used in microprocessor systems to multiplex data from multiple memory locations onto a single data bus. It is also used in control systems to select data from different sensors or control signals.

Technical Specifications:

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature: 0°C to 70°C
• Input Low Voltage: 0.8V (maximum)
• Input High Voltage: 2.0V (minimum)
• Output Low Voltage: 0.4V (maximum)
• Output High Voltage: 2.4V (minimum)
• Propagation Delay: Typically 15 ns
• Package Options: DIP, SOIC