CD74HCT251MG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, CMOS logic, 8-input multiplexer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The CD74HCT251MG4 is a multiplexer IC that allows the selection of one out of eight input signals to be routed to a single output line.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Logic Family: HCT
• Number of Inputs: 8
• Number of Outputs: 1
• Supply Voltage: 2V - 6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 14 ns (typical)
• Output Current: ±4 mA
• Input Capacitance: 3.5 pF (typical)

Pin Configuration

The CD74HCT251MG4 has a 16-pin SOIC package with the following pin configuration:

+---+--+---+ A0 |1 +--+ 16| VCC A1 |2 15| Y A2 |3 14| GND A3 |4 13| I7 A4 |5 12| I6 A5 |6 11| I5 A6 |7 10| I4 A7 |8 9| I3 +----------+

Functional Features

• High-speed operation: The CD74HCT251MG4 is designed for high-speed applications, making it suitable for use in time-critical systems.
• CMOS logic: The IC utilizes CMOS technology, which provides low power consumption and high noise immunity.
• 8-input multiplexer: It allows the selection of one out of eight input signals to be routed to the output line.
• Schmitt-trigger inputs: The IC features Schmitt-trigger inputs, ensuring reliable operation even in the presence of noisy input signals.

Advantages

• High-speed operation enables efficient signal routing in time-sensitive applications.
• CMOS technology offers low power consumption and high noise immunity.
• Compact SOIC package allows for easy integration into various circuit designs.
• Schmitt-trigger inputs ensure reliable operation in the presence of noisy signals.

Disadvantages

• Limited to 8 input signals, may not be suitable for applications requiring a higher number of inputs.
• Propagation delay of 14 ns may introduce slight latency in certain applications.

Working Principles

The CD74HCT251MG4 is based on multiplexing principles. It uses internal logic gates to select one input from multiple options and route it to the output line based on the control inputs. The IC operates by decoding the binary values applied to the address inputs (A0-A7) and selecting the corresponding input line to be connected to the output (Y).

Application Field Plans

The CD74HCT251MG4 can be used in various applications, including:

1. Data acquisition systems
2. Communication equipment
3. Industrial automation
4. Automotive electronics
5. Audio/video signal routing

Alternative Models

Here are some alternative models that offer similar functionality:

1. SN74HCT251N by Texas Instruments
2. MC74HCT251AN by ON Semiconductor
3. 74HCT251 by NXP Semiconductors

These alternatives can be considered based on specific requirements and availability.

In conclusion, the CD74HCT251MG4 is a high-speed, CMOS logic 8-input multiplexer IC. It offers reliable signal routing and is suitable for various applications in different industries. The IC's compact package and low power consumption make it an attractive choice for circuit designers. However, its limitation of 8 input signals and slight propagation delay should be considered when selecting the appropriate multiplexer for specific applications.