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.