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MM74HC244N
Product Overview
- Category: Integrated Circuit
- Use: Buffer/Line Driver
- Characteristics: High-speed, CMOS octal buffer/line driver with 3-state outputs
- Package: 20-pin PDIP (Plastic Dual In-line Package)
- Essence: The MM74HC244N is a versatile integrated circuit designed for buffering and driving signals in electronic circuits.
- Packaging/Quantity: Available in tubes or reels, quantity varies by supplier.
Specifications
- Supply Voltage: 2V to 6V
- High-Level Input Voltage: 2V to VCC
- Low-Level Input Voltage: GND to 0.8V
- High-Level Output Voltage: VCC - 0.1V
- Low-Level Output Voltage: 0.1V
- Maximum Operating Frequency: 25MHz
- Propagation Delay: 10ns (max) at 5V
- Operating Temperature Range: -55°C to 125°C
Detailed Pin Configuration
The MM74HC244N has a 20-pin PDIP package with the following pin configuration: 1. A1 2. Y1 3. A2 4. Y2 5. A3 6. Y3 7. GND 8. Y4 9. A4 10. Y5 11. A5 12. Y6 13. A6 14. Y7 15. A7 16. Y8 17. VCC 18. OE (Output Enable) 19. A8 20. GND
Functional Features
- Octal buffer/line driver with 3-state outputs
- High-speed operation
- Compatible with TTL levels
- Balanced propagation delays
- Wide operating voltage range
- Output capability: bus driver
Advantages and Disadvantages
Advantages
- High-speed operation suitable for demanding applications
- Wide operating voltage range allows for flexibility in design
- 3-state outputs provide versatility in signal control
Disadvantages
- Limited maximum operating frequency compared to some newer alternatives
- Higher power consumption compared to low-power alternatives
Working Principles
The MM74HC244N operates by receiving input signals on the A1-A8 pins and driving corresponding output signals on the Y1-Y8 pins. The OE pin controls the output enable function, allowing the device to be put into a high-impedance state when not actively driving signals.
Detailed Application Field Plans
The MM74HC244N is commonly used in applications such as: - Address and data bus buffering in microprocessor systems - Signal buffering and line driving in communication interfaces - General-purpose logic level shifting and signal isolation
Detailed and Complete Alternative Models
Some alternative models to the MM74HC244N include: - SN74HC244: Similar octal buffer/line driver from Texas Instruments - MC74HC244: Another octal buffer/line driver option from ON Semiconductor - 74HCT244: Octal buffer/line driver with CMOS/TTL compatibility from NXP Semiconductors
This completes the English editing encyclopedia entry structure for MM74HC244N, providing comprehensive information about the product's category, use, characteristics, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.
Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MM74HC244N en soluciones técnicas
What is MM74HC244N?
- MM74HC244N is an octal buffer/line driver with 3-state outputs, commonly used in digital electronics to provide high-speed signal buffering and driving capabilities.
What are the typical applications of MM74HC244N?
- MM74HC244N is commonly used for bus driving, clock distribution, and general buffering in digital systems.
What is the maximum operating voltage for MM74HC244N?
- The maximum operating voltage for MM74HC244N is typically 7V.
What is the output drive capability of MM74HC244N?
- MM74HC244N has a high output drive capability, making it suitable for driving heavily loaded lines.
Can MM74HC244N be used for level shifting?
- Yes, MM74HC244N can be used for level shifting between different voltage domains in digital systems.
What is the maximum frequency at which MM74HC244N can operate?
- MM74HC244N can typically operate at frequencies up to several tens of megahertz, making it suitable for high-speed applications.
Is MM74HC244N compatible with TTL logic levels?
- Yes, MM74HC244N is compatible with TTL logic levels, making it versatile for interfacing with different types of logic families.
Does MM74HC244N have built-in ESD protection?
- MM74HC244N typically includes built-in ESD protection, enhancing its robustness in real-world applications.
Can MM74HC244N be used in bidirectional data transfer applications?
- Yes, MM74HC244N can be used in bidirectional data transfer applications due to its 3-state outputs.
Are there any specific layout considerations when using MM74HC244N?
- It's important to pay attention to proper decoupling and signal integrity practices when designing the PCB layout for MM74HC244N to ensure reliable operation.
Please let me know if you need further information on any of these questions!