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Encyclopedia Entry: 74HCT251DB,118
Product Overview
Category
The 74HCT251DB,118 belongs to the category of integrated circuits (ICs).
Use
This IC is commonly used in digital electronics applications for data multiplexing and demultiplexing.
Characteristics
- High-speed operation
- Low power consumption
- Wide operating voltage range
- Compatibility with TTL inputs
- Schmitt-trigger action on all inputs
- Balanced propagation delays
Package
The 74HCT251DB,118 is available in a standard SOIC-16 package.
Essence
The essence of this product lies in its ability to efficiently multiplex and demultiplex data signals in digital systems.
Packaging/Quantity
The 74HCT251DB,118 is typically packaged in reels or tubes, containing a quantity of 2500 units per reel/tube.
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
- Logic Family: HCT
Detailed Pin Configuration
The 74HCT251DB,118 has a total of 16 pins, which are assigned specific functions as follows:
- A0: Data input A0
- A1: Data input A1
- A2: Data input A2
- GND: Ground
- Y0: Multiplexer output Y0
- Y1: Multiplexer output Y1
- Y2: Multiplexer output Y2
- Y3: Multiplexer output Y3
- E: Enable input
- B: Data input B
- C: Data input C
- D: Data input D
- VCC: Positive power supply
- Y4: Demultiplexer output Y4
- Y5: Demultiplexer output Y5
- Y6: Demultiplexer output Y6
Functional Features
The 74HCT251DB,118 offers the following functional features:
- 3-to-8 line data multiplexing and demultiplexing
- Schmitt-trigger inputs for noise immunity
- Enable input for controlling the operation
- Balanced propagation delays for accurate data transmission
Advantages and Disadvantages
Advantages
- High-speed operation allows for efficient data processing
- Low power consumption helps in reducing energy usage
- Wide operating voltage range provides flexibility in various applications
- Compatibility with TTL inputs enables easy integration with existing systems
- Schmitt-trigger action on all inputs enhances noise immunity
- Balanced propagation delays ensure accurate data transmission
Disadvantages
- Limited number of input and output lines restricts scalability in complex systems
- Availability may vary depending on supplier and region
Working Principles
The 74HCT251DB,118 operates based on the principles of digital multiplexing and demultiplexing. It takes multiple input signals and selects one of them to be transmitted through a single output line. The selection is controlled by the enable input, which activates the multiplexing or demultiplexing operation.
Detailed Application Field Plans
The 74HCT251DB,118 finds application in various fields, including but not limited to: - Data communication systems - Digital signal processing - Industrial automation - Consumer electronics - Automotive electronics
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the 74HCT251DB,118 include: - SN74HCT251N - CD74HCT251E - MC74HCT251N - 74HCT251D
These models can be considered as alternatives based on their compatibility, specifications, and availability.
In conclusion, the 74HCT251DB,118 is a versatile integrated circuit used for data multiplexing and demultiplexing in digital electronics applications. Its high-speed operation, low power consumption, and compatibility with TTL inputs make it a valuable component in various fields. However, its limited scalability and availability should be taken into consideration when selecting alternative models.
Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 74HCT251DB,118 v technických řešeních
Sure! Here are 10 common questions and answers related to the application of 74HCT251DB,118 in technical solutions:
Q: What is the function of the 74HCT251DB,118? A: The 74HCT251DB,118 is a multiplexer/demultiplexer IC that allows for the selection of one of eight data inputs and routes it to a single output.
Q: What is the operating voltage range of the 74HCT251DB,118? A: The 74HCT251DB,118 operates within a voltage range of 4.5V to 5.5V.
Q: How many select inputs does the 74HCT251DB,118 have? A: The 74HCT251DB,118 has three select inputs (S0, S1, and S2) which determine the input to be selected.
Q: Can the 74HCT251DB,118 be used as both a multiplexer and a demultiplexer? A: Yes, the 74HCT251DB,118 can be used as both a multiplexer and a demultiplexer depending on how the select inputs are configured.
Q: What is the maximum frequency at which the 74HCT251DB,118 can operate? A: The 74HCT251DB,118 can operate at a maximum frequency of 125 MHz.
Q: How many data inputs can the 74HCT251DB,118 handle? A: The 74HCT251DB,118 can handle up to eight data inputs (D0-D7).
Q: What is the output configuration of the 74HCT251DB,118? A: The 74HCT251DB,118 has a single output (Y) which is driven by the selected input.
Q: Can the 74HCT251DB,118 be cascaded to increase the number of inputs? A: Yes, multiple 74HCT251DB,118 ICs can be cascaded together to increase the number of inputs and outputs.
Q: What is the power supply current requirement for the 74HCT251DB,118? A: The power supply current requirement for the 74HCT251DB,118 is typically around 4 mA.
Q: Are there any specific precautions to consider when using the 74HCT251DB,118? A: It is important to ensure that the voltage levels of the inputs are within the specified range (0V to VCC) to prevent damage to the IC. Additionally, proper decoupling capacitors should be used to stabilize the power supply.