Consulte las especificaciones para obtener detalles del producto.
74HCT245DB,112
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Level shifting and signal buffering
- Characteristics: High-speed CMOS technology, low power consumption
- Package: SSOP (Shrink Small Outline Package)
- Essence: Octal bus transceiver with 3-state outputs
- Packaging/Quantity: Tape and reel, 2500 pieces 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
- Input Capacitance: 3.5pF
- Output Capacitance: 6pF
- Propagation Delay Time: 9ns
- Output Current: ±6mA
Detailed Pin Configuration
The 74HCT245DB,112 has a total of 20 pins. The pin configuration is as follows:
- OE (Output Enable) - Output enable input
- A1 - Data input/output
- B1 - Data input/output
- A2 - Data input/output
- B2 - Data input/output
- A3 - Data input/output
- B3 - Data input/output
- A4 - Data input/output
- B4 - Data input/output
- GND (Ground) - Ground reference
- B5 - Data input/output
- A5 - Data input/output
- B6 - Data input/output
- A6 - Data input/output
- B7 - Data input/output
- A7 - Data input/output
- B8 - Data input/output
- A8 - Data input/output
- VCC - Positive supply voltage
- DIR (Direction) - Direction control input
Functional Features
- Bidirectional data transfer between two buses
- 3-state outputs for bus isolation
- High-speed operation suitable for various applications
- Compatible with TTL levels
- Low power consumption
Advantages and Disadvantages
Advantages: - Fast and efficient data transfer - Low power consumption - Compact SSOP package for space-saving designs - Wide operating temperature range
Disadvantages: - Limited output current capacity - Requires external pull-up resistors for proper operation
Working Principles
The 74HCT245DB,112 is an octal bus transceiver that allows bidirectional data transfer between two buses. It features 3-state outputs, which enable bus isolation when not actively driving the bus. The direction of data flow is controlled by the DIR pin. When the DIR pin is high, data is transferred from A1-A8 to B1-B8, and when the DIR pin is low, data is transferred from B1-B8 to A1-A8.
Detailed Application Field Plans
The 74HCT245DB,112 is commonly used in various applications that require level shifting and signal buffering. Some of the typical application fields include: - Microcontroller interfacing - Data communication systems - Industrial automation - Automotive electronics - Robotics
Detailed and Complete Alternative Models
- SN74HCT245N: DIP (Dual In-line Package) version of the same IC
- MC74HCT245ADTR2G: TSSOP (Thin Shrink Small Outline Package) version with different pin configuration
- CD74HCT245E: PDIP (Plastic Dual In-line Package) version with extended temperature range
These alternative models offer similar functionality but may have differences in package type, pin configuration, or operating temperature range.
Word count: 386 words
Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 74HCT245DB,112 en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of 74HCT245DB,112 in technical solutions:
Q: What is the function of the 74HCT245DB,112? A: The 74HCT245DB,112 is an octal bus transceiver that facilitates bidirectional transfer of data between two buses.
Q: What voltage levels does the 74HCT245DB,112 support? A: The 74HCT245DB,112 supports voltage levels ranging from 4.5V to 5.5V.
Q: How many channels does the 74HCT245DB,112 have? A: The 74HCT245DB,112 has 8 channels, allowing for simultaneous bidirectional data transfer on each channel.
Q: Can the 74HCT245DB,112 be used with both TTL and CMOS logic families? A: Yes, the 74HCT245DB,112 is compatible with both TTL and CMOS logic families, making it versatile for various applications.
Q: What is the maximum data transfer rate supported by the 74HCT245DB,112? A: The 74HCT245DB,112 can support data transfer rates up to 40 MHz.
Q: Does the 74HCT245DB,112 have any built-in protection features? A: Yes, the 74HCT245DB,112 has built-in diode clamps to protect against electrostatic discharge (ESD) and overvoltage conditions.
Q: Can the 74HCT245DB,112 be used as a level shifter? A: Yes, the 74HCT245DB,112 can be used as a level shifter to convert signals between different voltage levels.
Q: What is the power supply range for the 74HCT245DB,112? A: The 74HCT245DB,112 operates with a power supply range of 4.5V to 5.5V.
Q: Can the 74HCT245DB,112 be used in high-speed applications? A: Yes, the 74HCT245DB,112 is suitable for high-speed applications due to its fast propagation delay and transition times.
Q: Are there any specific layout considerations when using the 74HCT245DB,112? A: Yes, it is recommended to follow proper PCB layout guidelines to minimize noise, ensure signal integrity, and optimize performance when using the 74HCT245DB,112.
Please note that the answers provided here are general and may vary depending on the specific application and requirements. It is always advisable to refer to the datasheet and consult the manufacturer's guidelines for accurate information.