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74ACT573B
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Encyclopedia Entry: 74ACT573B

Product Overview

Category

The 74ACT573B belongs to the category of integrated circuits (ICs) and specifically falls under the group of octal transparent latch with 3-state outputs.

Use

This IC is commonly used in digital electronics for storing and transferring data. It acts as a latch, allowing data to be temporarily stored and then transferred to other components or devices.

Characteristics

  • Octal transparent latch with 3-state outputs
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compatible with TTL input/output levels
  • Output can be disabled for bus sharing

Package

The 74ACT573B is typically available in a DIP (Dual In-line Package) format. The package consists of a rectangular plastic body with leads extending from both sides, allowing for easy insertion into a circuit board.

Essence

The essence of the 74ACT573B lies in its ability to store and transfer data efficiently within a digital system. It provides a reliable and convenient solution for managing data flow between different components.

Packaging/Quantity

The 74ACT573B is commonly packaged in tubes or reels, depending on the manufacturer's preference. The quantity per package varies but is typically around 25 to 50 units.

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 +85°C
  • Maximum Clock Frequency: 100 MHz
  • Output Drive Capability: ±24 mA

Detailed Pin Configuration

The 74ACT573B has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

  1. LE (Latch Enable)
  2. D0 (Data Input 0)
  3. D1 (Data Input 1)
  4. D2 (Data Input 2)
  5. D3 (Data Input 3)
  6. D4 (Data Input 4)
  7. D5 (Data Input 5)
  8. D6 (Data Input 6)
  9. D7 (Data Input 7)
  10. GND (Ground)
  11. Q0 (Output 0)
  12. Q1 (Output 1)
  13. Q2 (Output 2)
  14. Q3 (Output 3)
  15. Q4 (Output 4)
  16. Q5 (Output 5)
  17. Q6 (Output 6)
  18. Q7 (Output 7)
  19. OE (Output Enable)
  20. VCC (Supply Voltage)

Functional Features

The 74ACT573B offers the following functional features:

  • Transparent latch operation: The input data is transferred to the outputs when the latch enable (LE) signal is high.
  • 3-state outputs: The outputs can be disabled by setting the output enable (OE) signal low, allowing for bus sharing and preventing conflicts.
  • High-speed operation: The IC is designed to operate at high clock frequencies, making it suitable for time-critical applications.
  • TTL compatibility: The inputs and outputs are compatible with TTL logic levels, ensuring seamless integration with other TTL-based components.

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient data transfer.
  • Low power consumption helps in reducing overall system energy requirements.
  • Wide operating voltage range provides flexibility in various applications.
  • 3-state outputs enable bus sharing and prevent conflicts.
  • Compatibility with TTL logic levels ensures easy integration with existing systems.

Disadvantages

  • Limited output drive capability may restrict its use in certain high-current applications.
  • Availability of alternative models with additional features or improved specifications may limit its adoption in some cases.

Working Principles

The 74ACT573B operates based on the principle of transparent latching. When the latch enable (LE) signal is high, the input data is transferred to the outputs. The output enable (OE) signal can be used to disable the outputs, allowing for bus sharing and preventing conflicts. The IC is designed to operate at high clock frequencies, ensuring efficient data transfer within a digital system.

Detailed Application Field Plans

The 74ACT573B finds applications in various fields where data storage and transfer are essential. Some specific application areas include:

  1. Microcontrollers: Used for interfacing microcontrollers with external devices, such as sensors, displays, or memory modules.
  2. Communication Systems: Employed in data transmission and reception circuits, enabling efficient data flow between different communication modules.
  3. Industrial Automation: Integrated into control systems to manage data exchange between sensors, actuators, and central processing units.
  4. Automotive Electronics: Utilized in automotive control units for storing and transferring critical data related to engine management, safety systems, and more.

Enumerați 10 întrebări și răspunsuri comune legate de aplicarea lui 74ACT573B în soluțiile tehnice

Sure! Here are 10 common questions and answers related to the application of 74ACT573B in technical solutions:

  1. Q: What is the 74ACT573B? A: The 74ACT573B is an octal transparent latch with 3-state outputs, commonly used in digital systems for data storage and transfer.

  2. Q: What is the maximum operating voltage for the 74ACT573B? A: The maximum operating voltage for the 74ACT573B is typically 5.5V.

  3. Q: How many bits can the 74ACT573B latch store? A: The 74ACT573B is an octal latch, meaning it can store 8 bits of data.

  4. Q: Can the 74ACT573B be used for bidirectional data transfer? A: No, the 74ACT573B is a unidirectional latch and cannot be used for bidirectional data transfer.

  5. Q: What is the purpose of the 3-state outputs in the 74ACT573B? A: The 3-state outputs allow multiple latches to be connected together, enabling bus sharing and reducing contention on shared data lines.

  6. Q: What is the typical propagation delay of the 74ACT573B? A: The typical propagation delay of the 74ACT573B is around 5 nanoseconds.

  7. Q: Can the 74ACT573B operate at high frequencies? A: Yes, the 74ACT573B is designed to operate at high frequencies and is suitable for use in applications requiring fast data transfer.

  8. Q: Does the 74ACT573B have any built-in protection features? A: Yes, the 74ACT573B has built-in ESD protection diodes to safeguard against electrostatic discharge.

  9. Q: Can the 74ACT573B be cascaded to increase the number of latched bits? A: Yes, multiple 74ACT573B latches can be cascaded together to increase the number of latched bits in a system.

  10. Q: What is the power supply voltage range for the 74ACT573B? A: The power supply voltage range for the 74ACT573B is typically between 4.5V and 5.5V.