MM74HC251MX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-Speed, CMOS Logic, 8-Channel, Non-Inverting
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The MM74HC251MX is a multiplexer IC that allows the selection of one out of eight data inputs and routes it to a single output.
• Packaging/Quantity: The MM74HC251MX is available in a tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Logic Family: HC (High-Speed CMOS)
• Number of Channels: 8
• Input Voltage: 2V - 6V
• Output Voltage: 0V - Vcc
• Propagation Delay: 12 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MM74HC251MX has a total of 16 pins. The pin configuration is as follows:

__ __ A1 |1 \__/ 16| Vcc A2 |2 15| Y A3 |3 14| B A4 |4 13| C A5 |5 MM 12| D A6 |6 74 11| E A7 |7 HC 10| F GND |8 9| G ----------

Functional Features

• The MM74HC251MX is designed to handle high-speed digital signals efficiently.
• It provides non-inverting data selection, allowing the selected input to be directly routed to the output.
• The IC has a wide operating voltage range, making it suitable for various applications.
• It offers low power consumption and high noise immunity due to its CMOS technology.

Advantages and Disadvantages

Advantages

• High-speed operation enables quick data selection.
• Non-inverting functionality preserves the integrity of the selected data.
• Wide operating voltage range allows compatibility with different systems.
• Low power consumption helps in energy-efficient designs.
• CMOS technology provides high noise immunity.

Disadvantages

• Limited to 8 channels, which may not be sufficient for certain applications requiring more inputs.
• The propagation delay of 12 ns may introduce slight delays in time-critical applications.

Working Principles

The MM74HC251MX works based on the principle of multiplexing. It uses digital logic gates to select one out of eight input signals and route it to the output pin. The selection is controlled by the address inputs (A1-A7) and the enable input (E). When the appropriate address is provided, the selected input is passed through to the output (Y).

Detailed Application Field Plans

The MM74HC251MX finds applications in various fields where data selection and routing are required. Some of the detailed application field plans include:

1. Data communication systems
2. Digital audio/video equipment
3. Industrial automation
4. Automotive electronics
5. Medical devices
6. Test and measurement instruments
7. Robotics
8. Consumer electronics

Detailed and Complete Alternative Models

• SN74HC251N: Similar 8-channel multiplexer IC from Texas Instruments.
• CD74HC251E: 8-channel multiplexer IC from Texas Instruments with similar characteristics.
• MC74HC251N: Another alternative from ON Semiconductor with comparable specifications.

These alternative models can be considered as substitutes for the MM74HC251MX, depending on specific requirements and availability.

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