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74LV245DB,118
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74LV245DB,118

Product Overview

Category

The 74LV245DB,118 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for voltage level shifting and signal buffering in digital systems.

Characteristics

  • Voltage Level Shifting: The 74LV245DB,118 is designed to shift logic levels between different voltage domains.
  • Signal Buffering: It provides a high impedance buffer to prevent loading effects on the input signal.
  • Bidirectional Data Transfer: This IC allows bidirectional data transfer between two voltage domains.

Package

The 74LV245DB,118 is available in a standard SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the 74LV245DB,118 lies in its ability to facilitate voltage level shifting and signal buffering, ensuring seamless communication between different voltage domains in digital systems.

Packaging/Quantity

The 74LV245DB,118 is typically packaged in reels containing a quantity of 250 units.

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • Logic Family: LV (Low Voltage)
  • Number of Channels: 8
  • Input/Output Type: Tri-State
  • Maximum Operating Frequency: 100MHz
  • Propagation Delay: 6ns (typical)

Detailed Pin Configuration

The 74LV245DB,118 has a total of 20 pins, each serving a specific function:

  1. OE (Output Enable) - Output control pin
  2. A1-A8 - Input/output pins for channel A
  3. B1-B8 - Input/output pins for channel B
  4. GND (Ground) - Ground reference
  5. B8 - Input/output pin for channel B
  6. B7 - Input/output pin for channel B
  7. B6 - Input/output pin for channel B
  8. B5 - Input/output pin for channel B
  9. B4 - Input/output pin for channel B
  10. B3 - Input/output pin for channel B
  11. B2 - Input/output pin for channel B
  12. B1 - Input/output pin for channel B
  13. A8 - Input/output pin for channel A
  14. A7 - Input/output pin for channel A
  15. A6 - Input/output pin for channel A
  16. A5 - Input/output pin for channel A
  17. A4 - Input/output pin for channel A
  18. A3 - Input/output pin for channel A
  19. A2 - Input/output pin for channel A
  20. VCC (Supply Voltage) - Positive supply voltage

Functional Features

  • Bidirectional Data Transfer: The 74LV245DB,118 allows data to be transferred bidirectionally between two voltage domains.
  • Tri-State Outputs: The output pins can be put into a high impedance state, allowing multiple devices to share the same bus without interference.
  • Wide Supply Voltage Range: It operates over a wide range of supply voltages, making it compatible with various digital systems.

Advantages and Disadvantages

Advantages

  • Efficient Voltage Level Shifting: The IC provides reliable voltage level shifting, ensuring seamless communication between different voltage domains.
  • High-Speed Operation: With a maximum operating frequency of 100MHz, it enables fast data transfer in digital systems.
  • Tri-State Outputs: The tri-state outputs allow for easy bus sharing and reduce the chances of signal interference.

Disadvantages

  • Limited Channel Count: The 74LV245DB,118 offers 8 channels, which may not be sufficient for complex digital systems requiring a higher number of channels.
  • Propagation Delay: The propagation delay of 6ns may introduce a slight delay in data transmission, which can be critical in certain applications.

Working Principles

The 74LV245DB,118 operates based on the principles of voltage level shifting and signal buffering. It uses a combination of transistors and logic gates to convert and buffer digital signals between different voltage domains. The input signals are amplified and shifted to match the desired output voltage levels, ensuring reliable communication between incompatible voltage domains.

Detailed Application Field Plans

The 74LV245DB,118 finds extensive application in various digital systems, including but not limited to:

  1. Microcontrollers: It enables communication between microcontrollers operating at different voltage levels.
  2. Communication Interfaces: It facilitates voltage level translation between different communication interfaces, such as UART, SPI, and I2C.
  3. Memory Systems: The IC is used for interfacing memory modules with different voltage requirements.
  4. Industrial Automation: It plays a crucial role in connecting digital sensors and actuators operating at different voltage levels.

Detailed and Complete Alternative Models

  1. SN74LV245A: This is an alternative model from Texas Instruments that offers similar functionality and performance.
  2. MC74LVX

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 74LV245DB,118 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of 74LV245DB,118 in technical solutions:

  1. Q: What is the function of the 74LV245DB,118? A: The 74LV245DB,118 is an octal bus transceiver with 3-state outputs. It allows bidirectional transfer of data between different voltage levels.

  2. Q: What is the maximum operating voltage for the 74LV245DB,118? A: The maximum operating voltage for the 74LV245DB,118 is 5.5V.

  3. Q: Can the 74LV245DB,118 be used for level shifting between different voltage domains? A: Yes, the 74LV245DB,118 can be used for level shifting between different voltage domains as it supports bidirectional data transfer.

  4. Q: What is the maximum data transfer rate supported by the 74LV245DB,118? A: The 74LV245DB,118 supports a maximum data transfer rate of 400 Mbps.

  5. Q: How many input/output pins does the 74LV245DB,118 have? A: The 74LV245DB,118 has 8 input/output pins.

  6. Q: Can the 74LV245DB,118 be used in both parallel and serial communication systems? A: Yes, the 74LV245DB,118 can be used in both parallel and serial communication systems as it supports bidirectional data transfer.

  7. Q: Does the 74LV245DB,118 have built-in protection against overvoltage or ESD events? A: No, the 74LV245DB,118 does not have built-in protection against overvoltage or ESD events. External protection measures may be required.

  8. Q: Can the 74LV245DB,118 drive capacitive loads? A: Yes, the 74LV245DB,118 can drive capacitive loads up to a certain limit. Refer to the datasheet for specific details.

  9. Q: What is the power supply voltage range for the 74LV245DB,118? A: The power supply voltage range for the 74LV245DB,118 is typically between 2.7V and 5.5V.

  10. Q: Is the 74LV245DB,118 compatible with other logic families like TTL or CMOS? A: Yes, the 74LV245DB,118 is compatible with other logic families like TTL or CMOS as it has TTL/CMOS input level compatibility.

Please note that these answers are general and may vary depending on the specific application and requirements. It's always recommended to refer to the datasheet and consult the manufacturer for detailed information.