SN74LS251NSR

Product Overview

Category

SN74LS251NSR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for data multiplexing and selection purposes.

Characteristics

• Low power consumption
• High-speed operation
• Wide operating voltage range
• Compatibility with TTL logic levels

Package

SN74LS251NSR is available in a small outline package (SOIC) format.

Essence

The essence of SN74LS251NSR lies in its ability to efficiently multiplex and select data signals in various digital applications.

Packaging/Quantity

SN74LS251NSR is typically packaged in reels, containing a quantity of 2500 units per reel.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: LS
• Number of Inputs: 8
• Number of Outputs: 1
• Logic Type: Multiplexer/Demultiplexer
• Output Type: Standard
• Propagation Delay Time: 9ns
• High-Level Output Current: -0.4mA
• Low-Level Output Current: 8mA

Detailed Pin Configuration

SN74LS251NSR consists of 16 pins, each serving a specific function:

1. A0: Address Input 0
2. A1: Address Input 1
3. A2: Address Input 2
4. A3: Address Input 3
5. I0: Data Input 0
6. I1: Data Input 1
7. I2: Data Input 2
8. I3: Data Input 3
9. E: Enable Input
10. Y: Output
11. GND: Ground
12. I4: Data Input 4
13. I5: Data Input 5
14. I6: Data Input 6
15. I7: Data Input 7
16. VCC: Supply Voltage

Functional Features

SN74LS251NSR offers the following functional features:

• 8-input multiplexer with a single output
• Enable input for controlling data selection
• TTL-compatible logic levels for seamless integration with other digital components
• Fast propagation delay time for high-speed operation

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range allows for flexibility in various applications
• High-speed operation enables efficient data processing
• Compatibility with TTL logic levels simplifies integration with existing systems

Disadvantages

• Limited number of inputs may restrict its use in complex multiplexing scenarios
• Propagation delay time may introduce timing issues in certain applications

Working Principles

SN74LS251NSR operates based on the principles of digital multiplexing. It selects one of the eight input data signals based on the address inputs and the enable signal. The selected data is then routed to the output pin, allowing for efficient data routing and selection.

Detailed Application Field Plans

SN74LS251NSR finds application in various fields, including but not limited to: - Digital communication systems - Data acquisition systems - Industrial automation - Consumer electronics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SN74LS251NSR are: - CD4051B: 8-channel analog multiplexer/demultiplexer IC - MC14051B: 8-channel analog multiplexer/demultiplexer IC - 74HC151: 8-input multiplexer IC

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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