M74HC257B1R

Product Overview

Category

M74HC257B1R belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• High-speed operation
• Wide operating voltage range
• Low power consumption
• Compatibility with various logic families
• Schmitt trigger inputs for noise immunity

Package

M74HC257B1R is available in a standard 16-pin dual in-line package (DIP).

Essence

The essence of M74HC257B1R lies in its ability to efficiently handle data multiplexing and demultiplexing tasks in digital systems.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of units. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Maximum Propagation Delay: 15 ns
• Maximum Quiescent Current: 4 μA

Detailed Pin Configuration

M74HC257B1R features a total of 16 pins, each serving a specific purpose. The pin configuration is as follows:

1. A0: Data input A0
2. A1: Data input A1
3. A2: Data input A2
4. A3: Data input A3
5. GND: Ground
6. Y0: Multiplexer output Y0
7. Y1: Multiplexer output Y1
8. Y2: Multiplexer output Y2
9. Y3: Multiplexer output Y3
10. E: Enable input
11. B: Data input B
12. C: Data input C
13. D: Data input D
14. VCC: Supply voltage
15. Y4: Demultiplexer output Y4
16. Y5: Demultiplexer output Y5

Functional Features

• Data multiplexing: M74HC257B1R can combine multiple data inputs (A0-A3) into a single output (Y0-Y3) based on the control inputs.
• Data demultiplexing: It can also distribute a single input (B) to multiple outputs (Y4 and Y5) based on the control inputs.
• Enable control: The enable input (E) allows the user to activate or deactivate the multiplexing/demultiplexing functionality.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data handling.
• Wide operating voltage range provides flexibility in various applications.
• Low power consumption helps conserve energy.
• Compatibility with different logic families enhances versatility.
• Schmitt trigger inputs ensure noise immunity, improving signal integrity.

Disadvantages

• Limited number of inputs and outputs may restrict certain complex applications.
• Propagation delay of 15 ns may not be suitable for ultra-high-speed applications.

Working Principles

M74HC257B1R operates based on the principles of digital multiplexing and demultiplexing. When the enable input (E) is active, the IC combines the data inputs (A0-A3) into a single output (Y0-Y3) according to the control inputs. Conversely, when the enable input is inactive, the IC distributes the data input (B) to the respective outputs (Y4 and Y5) based on the control inputs.

Detailed Application Field Plans

M74HC257B1R finds applications in various digital systems, including but not limited to: - Data communication systems - Multiplexed data transmission - Address decoding in memory systems - Digital signal processing - Industrial automation

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to M74HC257B1R are: - 74HC257 - CD74HC257 - SN74HC257 - MC74HC257

These alternatives can be considered based on specific requirements, availability, and compatibility with the existing system.

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