Encyclopedia Entry: 74VHC244FT
Product Overview
Category
The 74VHC244FT belongs to the category of integrated circuits (ICs) and specifically falls under the family of VHC logic gates.
Use
This IC is commonly used in digital electronic circuits for signal amplification, buffering, and level shifting purposes. It serves as a non-inverting octal buffer/line driver with 3-state outputs.
Characteristics
- High-speed operation: The 74VHC244FT offers fast switching speeds, making it suitable for applications requiring quick response times.
- Wide voltage range: It operates within a wide voltage range, typically between 2.0V and 5.5V, allowing compatibility with various power supply levels.
- Low power consumption: This IC consumes minimal power, making it energy-efficient and suitable for battery-powered devices.
- 3-state outputs: The 74VHC244FT features 3-state outputs, enabling multiple devices to share a common bus without interference.
Package and Quantity
The 74VHC244FT is available in a small-outline transistor (SOT) package. It is commonly supplied in tape and reel packaging, with a quantity of 2500 units per reel.
Specifications
- Supply Voltage Range: 2.0V to 5.5V
- Input Voltage Range: 0V to VCC
- Output Voltage Range: 0V to VCC
- Operating Temperature Range: -40°C to +85°C
- Maximum Propagation Delay: 6 ns
- Maximum Quiescent Current: 1 μA
Pin Configuration
The 74VHC244FT has a total of 20 pins, which are assigned specific functions as follows:
Pin 1: Output 1 (Y1)
Pin 2: Output 2 (Y2)
Pin 3: Output 3 (Y3)
Pin 4: Output 4 (Y4)
Pin 5: Output 5 (Y5)
Pin 6: Output 6 (Y6)
Pin 7: Output 7 (Y7)
Pin 8: Output 8 (Y8)
Pin 9: GND (Ground)
Pin 10: Input 1 (A1)
Pin 11: Input 2 (A2)
Pin 12: Input 3 (A3)
Pin 13: Input 4 (A4)
Pin 14: Input 5 (A5)
Pin 15: Input 6 (A6)
Pin 16: Input 7 (A7)
Pin 17: Input 8 (A8)
Pin 18: OE (Output Enable)
Pin 19: VCC (Positive Power Supply)
Pin 20: NC (No Connection)
Functional Features
- Non-inverting buffer: The 74VHC244FT amplifies and buffers input signals without inverting their logic levels.
- 3-state outputs: The IC provides three output states - high, low, and high impedance (disconnected), allowing for bus sharing and preventing signal conflicts.
- High-speed operation: With a maximum propagation delay of 6 ns, this IC ensures rapid signal transmission and response times.
Advantages and Disadvantages
Advantages
- Fast switching speeds enable quick data transfer and processing.
- Wide voltage range compatibility allows for versatile applications.
- Low power consumption makes it suitable for energy-efficient devices.
- 3-state outputs facilitate bus sharing and prevent signal interference.
Disadvantages
- Limited number of inputs and outputs restricts its application in complex circuits.
- Sensitivity to electrostatic discharge (ESD) requires proper handling during installation and usage.
Working Principles
The 74VHC244FT operates based on the principles of CMOS (Complementary Metal-Oxide-Semiconductor) technology. It utilizes a combination of NMOS (N-channel Metal-Oxide-Semiconductor) and PMOS (P-channel Metal-Oxide-Semiconductor) transistors to achieve non-inverting buffering functionality.
Application Field Plans
The 74VHC244FT finds applications in various digital electronic systems, including but not limited to: - Microcontrollers and microprocessors - Data communication devices - Memory modules - Industrial automation equipment - Automotive electronics
Alternative Models
For similar functionality and compatibility, alternative models to the 74VHC244FT include: - SN74LV244A - MC74VHC244 - CD74HCT244
These alternatives offer comparable features and can be used as substitutes depending on specific requirements.
In conclusion, the 74VHC244FT is a versatile integrated circuit that provides non-inverting buffering and line driving capabilities. Its high-speed operation, wide voltage range, and 3-state outputs make it suitable for various digital electronic applications. However, its
技術ソリューションにおける 74VHC244FT の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of 74VHC244FT in technical solutions:
Q: What is the 74VHC244FT? A: The 74VHC244FT is a high-speed octal buffer/line driver integrated circuit (IC) that can be used to amplify or buffer digital signals.
Q: What is the maximum operating voltage for the 74VHC244FT? A: The maximum operating voltage for the 74VHC244FT is typically 5.5 volts.
Q: Can the 74VHC244FT handle both input and output signals? A: Yes, the 74VHC244FT can be used as both an input buffer and an output driver.
Q: What is the typical output current capability of the 74VHC244FT? A: The typical output current capability of the 74VHC244FT is around 8 mA.
Q: Can the 74VHC244FT be used in bidirectional communication systems? A: Yes, the 74VHC244FT can be used in bidirectional systems by enabling the direction control pins.
Q: What is the propagation delay of the 74VHC244FT? A: The propagation delay of the 74VHC244FT is typically around 4 ns.
Q: Can the 74VHC244FT tolerate overvoltage conditions? A: No, the 74VHC244FT is not designed to tolerate overvoltage conditions. It is recommended to stay within the specified voltage range.
Q: Is the 74VHC244FT compatible with TTL logic levels? A: Yes, the 74VHC244FT is compatible with both TTL and CMOS logic levels.
Q: Can the 74VHC244FT be used in high-speed data transmission applications? A: Yes, the 74VHC244FT is suitable for high-speed data transmission due to its fast switching speed.
Q: What is the package type of the 74VHC244FT? A: The 74VHC244FT is available in various package types, such as SOIC, TSSOP, and SSOP.
Please note that these answers are general and may vary depending on specific datasheet specifications or application requirements.