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MM74HC251M
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 MM74HC251M 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 MM74HC251M is typically sold in reels or tubes containing multiple units.
Specifications
- Supply Voltage: 2V - 6V
- Input Voltage: 0V - Vcc
- Output Voltage: 0V - Vcc
- Operating Temperature: -40°C to +85°C
- Propagation Delay: 13ns (typical)
- Input Capacitance: 3.5pF (typical)
- Output Current: ±25mA
Pin Configuration
The MM74HC251M has a total of 16 pins arranged as follows:
___________
| |
1 |1 16| Vcc
2 |2 15| Output
3 |3 14| Input D0
4 |4 13| Input D1
5 |5 12| Input D2
6 |6 11| Input D3
7 |7 10| Input D4
8 |8 9| Input D5
|___________|
Functional Features
- 8-channel non-inverting data selector/multiplexer
- High-speed operation suitable for various applications
- CMOS logic for low power consumption
- Wide operating voltage range for flexibility
Advantages and Disadvantages
Advantages
- Allows selection of one out of eight data inputs
- Fast propagation delay ensures quick data routing
- Low power consumption due to CMOS technology
- Versatile operating voltage range enables compatibility with different systems
Disadvantages
- Limited number of input channels (8)
- Non-inverting nature may not be suitable for certain applications requiring inverted output
Working Principles
The MM74HC251M operates based on the principle of multiplexing. It selects one of the eight input data lines based on the control signals provided and routes it to the output pin. The non-inverting characteristic ensures that the selected data is passed through without any inversion.
Detailed Application Field Plans
The MM74HC251M can be used in various applications, including:
- Data routing and selection in microcontrollers and digital systems.
- Address decoding in memory systems.
- Input selection in audio/video equipment.
- Multiplexing control signals in communication systems.
- Data bus switching in computer peripherals.
Alternative Models
Here are some alternative models that offer similar functionality:
- CD4051B: 8-channel analog multiplexer/demultiplexer IC.
- SN74LS151: 8-input digital multiplexer IC.
- MC14051B: 8-channel analog multiplexer/demultiplexer IC.
These alternatives can be considered based on specific requirements and compatibility with the system.
In conclusion, the MM74HC251M is a versatile data selector/multiplexer IC with high-speed operation, low power consumption, and a wide operating voltage range. Its compact SOIC package makes it suitable for various applications in digital systems, memory systems, audio/video equipment, and more.
Καταγράψτε 10 συνήθεις ερωτήσεις και απαντήσεις που σχετίζονται με την εφαρμογή του MM74HC251M σε τεχνικές λύσεις
Sure! Here are 10 common questions and answers related to the application of MM74HC251M in technical solutions:
Q: What is MM74HC251M? A: MM74HC251M is a multiplexer/demultiplexer IC (integrated circuit) that can be used for data selection and routing in digital circuits.
Q: What is the purpose of using MM74HC251M in technical solutions? A: MM74HC251M allows for efficient data routing and selection, enabling the connection of multiple input sources to a single output or vice versa.
Q: How many inputs and outputs does MM74HC251M have? A: MM74HC251M has 8 inputs and 1 output, making it suitable for applications requiring data selection from up to 8 sources.
Q: What is the voltage range supported by MM74HC251M? A: MM74HC251M operates within a voltage range of 2V to 6V, making it compatible with various digital logic systems.
Q: Can MM74HC251M handle analog signals? A: No, MM74HC251M is designed for digital signals only and cannot handle analog signals.
Q: How does MM74HC251M select the desired input/output? A: MM74HC251M uses control inputs to determine which input is connected to the output, based on the binary value applied to the control pins.
Q: Can MM74HC251M be cascaded to increase the number of inputs/outputs? A: Yes, multiple MM74HC251M ICs can be cascaded together to expand the number of inputs and outputs as required.
Q: What is the maximum frequency at which MM74HC251M can operate? A: MM74HC251M has a maximum operating frequency of 25 MHz, making it suitable for high-speed digital applications.
Q: Is MM74HC251M compatible with TTL (Transistor-Transistor Logic) inputs/outputs? A: Yes, MM74HC251M is designed to be TTL-compatible, allowing for seamless integration with TTL-based systems.
Q: What are some common applications of MM74HC251M? A: MM74HC251M can be used in various applications such as data multiplexing, address decoding, bus switching, and general-purpose data routing in digital circuits.
Please note that these answers are general and may vary depending on the specific requirements and implementation of MM74HC251M in different technical solutions.