MC74VHC257DG

Product Overview

Category

MC74VHC257DG belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital logic applications for data multiplexing and demultiplexing.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity
• Compatible with TTL and CMOS logic levels

Package

MC74VHC257DG is available in a 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of MC74VHC257DG lies in its ability to efficiently handle data multiplexing and demultiplexing tasks in digital systems.

Packaging/Quantity

This IC is typically sold in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 2.0V to 5.5V
• Input Voltage: -0.5V to VCC + 0.5V
• Output Voltage: -0.5V to VCC + 0.5V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: VHC
• Number of Inputs: 4
• Number of Outputs: 1
• Propagation Delay Time: <10ns

Detailed Pin Configuration

The MC74VHC257DG has a total of 16 pins, each serving a specific purpose. The pin configuration is as follows:

1. A0: Data input 0
2. A1: Data input 1
3. A2: Data input 2
4. A3: Data input 3
5. G: Enable input (active low)
6. Y: Multiplexed output
7. B: Data input 0
8. C: Data input 1
9. D: Data input 2
10. E: Data input 3
11. GND: Ground
12. F: Multiplexed output
13. H: Data input 0
14. J: Data input 1
15. K: Data input 2
16. VCC: Supply voltage

Functional Features

• Data multiplexing and demultiplexing functionality
• Schmitt-trigger inputs for improved noise immunity
• High-speed operation allows for efficient data handling
• Wide operating voltage range enables compatibility with various systems
• Low power consumption for energy-efficient applications

Advantages and Disadvantages

Advantages

• High-speed operation ensures fast data processing
• Low power consumption leads to energy efficiency
• Wide operating voltage range provides versatility in system integration
• Schmitt-trigger inputs enhance noise immunity, improving overall performance

Disadvantages

• Limited number of inputs and outputs may restrict certain complex applications
• Propagation delay time may affect real-time data processing in time-critical systems

Working Principles

MC74VHC257DG operates based on the principles of digital logic. It utilizes multiplexers to select and route data from multiple inputs to a single output or vice versa. The enable input (G) controls the operation, allowing the IC to function as either a multiplexer or a demultiplexer.

Detailed Application Field Plans

MC74VHC257DG finds application in various digital systems where data multiplexing and demultiplexing are required. Some specific application fields include:

1. Communication Systems: Used for data routing and switching in telecommunication networks.
2. Data Acquisition: Enables efficient selection and distribution of data from multiple sources in data acquisition systems.
3. Industrial Automation: Facilitates data routing and control signal distribution in automated industrial processes.
4. Instrumentation: Utilized for signal multiplexing and demultiplexing in measurement and testing equipment.

Detailed and Complete Alternative Models

1. 74HC257: Similar functionality, but operates at a higher voltage range (2V to 6V).
2. CD4051: Analog multiplexer/demultiplexer IC with similar pin configuration and functionality.
3. SN74LS157: Quad 2-line to 1-line data selector/multiplexer IC, offering additional features.

These alternative models provide similar functionality to MC74VHC257DG and can be considered as substitutes depending on specific requirements.

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