GAL20V8B-25QPN

Product Overview

Category

The GAL20V8B-25QPN belongs to the category of programmable logic devices (PLDs).

Use

It is commonly used in digital electronic circuits for implementing various logical functions.

Characteristics

• Programmable: The GAL20V8B-25QPN can be programmed to perform specific logic functions.
• Versatile: It can be used in a wide range of applications due to its programmability.
• High-speed operation: The device operates at a speed of 25 nanoseconds (ns).
• Low power consumption: It consumes minimal power during operation.

Package

The GAL20V8B-25QPN is available in a Quad Flat Package (QFP) format.

Essence

The essence of GAL20V8B-25QPN lies in its ability to provide flexible and customizable logic functions in digital circuits.

Packaging/Quantity

The device is typically packaged in reels or tubes, with each containing a specific quantity of GAL20V8B-25QPN units.

Specifications

• Operating Voltage: 5V
• Maximum Operating Frequency: 40 MHz
• Number of Inputs: 24
• Number of Outputs: 8
• Logic Cells: 20
• I/O Pins: 28
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The GAL20V8B-25QPN has a total of 28 pins. The pin configuration is as follows:

1. VCC
2. GND
3. I/O0
4. I/O1
5. I/O2
6. I/O3
7. I/O4
8. I/O5
9. I/O6
10. I/O7
11. I/O8
12. I/O9
13. I/O10
14. I/O11
15. I/O12
16. I/O13
17. I/O14
18. I/O15
19. I/O16
20. I/O17
21. I/O18
22. I/O19
23. CLK1
24. CLK2
25. GND
26. CE1
27. CE2
28. OE

Functional Features

• Programmability: The GAL20V8B-25QPN can be programmed using industry-standard programming tools.
• High-Speed Operation: It operates at a speed of 25 ns, making it suitable for time-critical applications.
• Flexible Logic Functions: The device supports a wide range of logic functions, including AND, OR, XOR, and more.
• Output Enable (OE) Control: The OE pin allows the user to enable or disable the outputs as needed.

Advantages and Disadvantages

Advantages

• Versatility: The GAL20V8B-25QPN can be used in various applications due to its programmability.
• Cost-effective: It offers a cost-effective solution compared to custom-designed logic circuits.
• Time-saving: The device eliminates the need for designing and fabricating custom logic circuits from scratch.

Disadvantages

• Limited Complexity: The GAL20V8B-25QPN has a limited number of logic cells, which restricts the complexity of the circuits it can implement.
• Lack of Real-Time Adaptability: Once programmed, the device cannot be reprogrammed in real-time without erasing and reprogramming.

Working Principles

The GAL20V8B-25QPN utilizes a combination of programmable AND and OR arrays to implement the desired logic functions. The inputs are fed into the programmable AND array, and the outputs are then combined using the programmable OR array. The resulting logic function is determined by the programming of the device.

Detailed Application Field Plans

The GAL20V8B-25QPN finds applications in various fields, including:

1. Industrial Automation: It can be used for controlling and monitoring processes in industrial automation systems.
2. Communication Systems: The device can be employed in communication systems for signal processing and protocol implementation.
3. Automotive Electronics: It finds use in automotive electronics for functions such as engine control, safety systems, and infotainment.
4. Consumer Electronics: The GAL20V8B-25QPN can be utilized in consumer electronics devices like gaming consoles, home appliances, and audio/video equipment.

Detailed and Complete Alternative Models

Some alternative models to GAL20V8B-25QPN include:

1. GAL16V8D-15LPN
2. GAL22V10D-15LPN
3. ATF16V8B-15PU

These models offer similar functionality and characteristics, providing alternatives for different design requirements.

In conclusion, the GAL20V8B-25QPN is a versatile programmable logic device