Voir les spécifications pour les détails du produit.
MM74HC251SJX
Product Overview
- Category: Integrated Circuit
- Use: Data Selector/Multiplexer
- Characteristics: High-Speed, CMOS Logic, 8-Channel, Non-Inverting, Tri-State Output
- Package: SOIC (Small Outline Integrated Circuit)
- Essence: The MM74HC251SJX is a versatile data selector/multiplexer IC that allows the user to select one of eight input lines and route it to the output. It features non-inverting tri-state outputs, making it suitable for various digital applications.
- Packaging/Quantity: The MM74HC251SJX is available in a standard SOIC package and is typically sold in reels of 2500 units.
Specifications
- Supply Voltage: 2V to 6V
- Input Voltage: 0V to Vcc
- Output Voltage: 0V to Vcc
- Operating Temperature Range: -40°C to +85°C
- Propagation Delay: 9ns (typical)
- Quiescent Current: 4μA (maximum)
Pin Configuration
The MM74HC251SJX has a total of 16 pins arranged as follows:
___________
| |
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
- 8-channel data selector/multiplexer with non-inverting tri-state outputs
- Allows selection of one input line from eight options
- High-speed operation suitable for time-critical applications
- CMOS logic ensures low power consumption and compatibility with a wide range of digital systems
Advantages and Disadvantages
Advantages: - Versatile and flexible data selection capabilities - Non-inverting tri-state outputs allow easy integration into existing digital circuits - High-speed operation enables efficient data processing - Low power consumption due to CMOS technology
Disadvantages: - Limited to 8 input lines, may not be suitable for applications requiring more inputs - Requires external control signals for proper operation
Working Principles
The MM74HC251SJX operates by using the address inputs (A0-A7) to select one of the eight input lines (I3-I7). The selected input is then routed to the output pin (Y). The tri-state outputs allow the user to disable the output when not in use, preventing any interference with other components in the circuit.
Detailed Application Field Plans
The MM74HC251SJX can be used in various applications, including but not limited to: 1. Data multiplexing in microcontrollers and digital signal processors 2. Address decoding in memory systems 3. Input selection in communication systems 4. Bus switching in computer architectures 5. Logic level translation in mixed-voltage systems
Alternative Models
Here are some alternative models that offer similar functionality to the MM74HC251SJX: 1. SN74HC251N by Texas Instruments 2. CD74HC251E by Texas Instruments 3. MC74HC251N by ON Semiconductor 4. 74HC251D by NXP Semiconductors
These alternatives can be considered based on specific requirements and availability in the market.
In conclusion, the MM74HC251SJX is a versatile data selector/multiplexer IC with non-inverting tri-state outputs. It offers high-speed operation, low power consumption, and is suitable for various digital applications. With its 8-channel selection capability, it provides flexibility in data routing and integration into different systems.
Énumérez 10 questions et réponses courantes liées à l'application de MM74HC251SJX dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of MM74HC251SJX in technical solutions:
Q: What is MM74HC251SJX? A: MM74HC251SJX 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 MM74HC251SJX in technical solutions? A: MM74HC251SJX can be used to select one of multiple input signals and route it to an output, making it useful for applications such as data routing, signal switching, and address decoding.
Q: What is the voltage range supported by MM74HC251SJX? A: MM74HC251SJX supports a voltage range of 2V to 6V, making it compatible with a wide range of digital systems.
Q: How many inputs and outputs does MM74HC251SJX have? A: MM74HC251SJX has 8 inputs and 1 output, allowing you to select from up to 8 different input signals.
Q: Can MM74HC251SJX be cascaded to increase the number of inputs? A: Yes, MM74HC251SJX can be cascaded together to increase the number of inputs. By connecting the outputs of one IC to the inputs of another, you can expand the selection capability.
Q: What is the maximum operating frequency of MM74HC251SJX? A: The maximum operating frequency of MM74HC251SJX is typically around 50 MHz, making it suitable for high-speed digital applications.
Q: Is MM74HC251SJX compatible with TTL logic levels? A: Yes, MM74HC251SJX is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels, allowing it to interface with a variety of digital systems.
Q: Does MM74HC251SJX have any built-in protection features? A: MM74HC251SJX has built-in ESD (Electrostatic Discharge) protection on its inputs, which helps safeguard the IC from damage due to electrostatic discharge events.
Q: Can MM74HC251SJX be used in battery-powered applications? A: Yes, MM74HC251SJX can be used in battery-powered applications as it operates within a wide voltage range and has low power consumption.
Q: Are there any application notes or reference designs available for MM74HC251SJX? A: Yes, the manufacturer of MM74HC251SJX provides application notes and reference designs that can help you understand and implement the IC in various technical solutions.