74HCT640DB,112
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Digital Logic Level Shifter
- Characteristics: High-speed, CMOS compatible, 3-state output, octal bus transceiver
- Package: SSOP (Shrink Small Outline Package)
- Essence: This IC is designed to provide bidirectional level shifting between two different voltage domains in digital systems.
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Supply Voltage Range: 4.5V to 5.5V
- Input Voltage Range: 0V to VCC
- Output Voltage Range: 0V to VCC
- Operating Temperature Range: -40°C to +125°C
- Output Drive Capability: ±24mA at 4.5V
- Propagation Delay: 10ns typical
Detailed Pin Configuration
The 74HCT640DB,112 has a total of 20 pins. The pin configuration is as follows:
+---\/---+
A1 -|1 20|- VCC
A2 -|2 19|- OE#
B1 -|3 18|- B7
B2 -|4 17|- B6
B3 -|5 16|- B5
B4 -|6 15|- B4
GND -|7 14|- B3
A3 -|8 13|- B2
A4 -|9 12|- B1
A5 -|10 11|- A6
+--------+
Functional Features
- Bidirectional level shifting between two voltage domains
- 3-state outputs allow multiple devices to share the same bus
- CMOS compatible inputs for easy integration with other digital logic circuits
- High-speed operation suitable for applications requiring fast data transfer
Advantages and Disadvantages
Advantages: - Provides efficient level shifting in digital systems - Allows interfacing between different voltage domains - Supports bidirectional communication - 3-state outputs enable bus sharing
Disadvantages: - Limited supply voltage range (4.5V to 5.5V) - Propagation delay may affect timing-sensitive applications
Working Principles
The 74HCT640DB,112 utilizes a combination of CMOS technology and 3-state outputs to achieve bidirectional level shifting. The inputs are compatible with CMOS logic levels, allowing seamless integration with other digital circuits. The device operates by monitoring the input signals and translating them to the appropriate voltage levels for the output domain.
Detailed Application Field Plans
The 74HCT640DB,112 is commonly used in various digital systems where level shifting is required. Some application fields include: - Communication interfaces between microcontrollers operating at different voltage levels - Interfacing between different families of digital ICs - Bus communication in multi-device systems
Detailed and Complete Alternative Models
- SN74HCT640N: DIP package, similar functionality
- MC74HCT640N: DIP package, similar functionality
- CD74HCT640E: SOIC package, similar functionality
- 74HCT640D: TSSOP package, similar functionality
(Note: This list is not exhaustive and there may be other alternative models available.)
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技術ソリューションにおける 74HCT640DB,112 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 74HCT640DB,112 in technical solutions:
Q: What is the function of the 74HCT640DB,112? A: The 74HCT640DB,112 is an octal bus transceiver with 3-state outputs. It allows bidirectional transfer of data between different bus systems.
Q: What voltage levels does the 74HCT640DB,112 support? A: The 74HCT640DB,112 supports voltage levels of 4.5V to 5.5V.
Q: How many channels does the 74HCT640DB,112 have? A: The 74HCT640DB,112 has 8 channels, allowing for simultaneous bidirectional data transfer on each channel.
Q: Can the 74HCT640DB,112 be used in both parallel and serial communication systems? A: Yes, the 74HCT640DB,112 can be used in both parallel and serial communication systems, making it versatile for various applications.
Q: What is the maximum data transfer rate supported by the 74HCT640DB,112? A: The 74HCT640DB,112 can support data transfer rates up to 40 MHz, making it suitable for high-speed applications.
Q: Does the 74HCT640DB,112 have built-in protection features? A: Yes, the 74HCT640DB,112 has built-in ESD protection, which helps safeguard against electrostatic discharge.
Q: Can the 74HCT640DB,112 be cascaded to increase the number of channels? A: Yes, multiple 74HCT640DB,112 chips can be cascaded to increase the number of channels and expand the data transfer capabilities.
Q: What is the power supply voltage range for the 74HCT640DB,112? A: The power supply voltage range for the 74HCT640DB,112 is typically between 4.5V and 5.5V.
Q: Does the 74HCT640DB,112 have any special features for bus arbitration? A: No, the 74HCT640DB,112 does not have built-in bus arbitration features. It primarily focuses on bidirectional data transfer.
Q: Can the 74HCT640DB,112 be used in both commercial and industrial applications? A: Yes, the 74HCT640DB,112 is suitable for both commercial and industrial applications due to its wide operating temperature range and robust design.
Please note that the answers provided here are general and may vary depending on specific application requirements.