The PALCE21V10H-5JC is an Erasable Programmable Logic Device (EPLD) from AMD (Advanced Micro Devices). Specifically, it's a PAL (Programmable Array Logic) device in the PALCE family, meaning it's electrically erasable, allowing for reprogramming. This device is designed for implementing custom logic functions and is commonly used in a variety of digital systems as a versatile glue logic component.

Applications

• Address decoding
• State machine implementation
• Peripheral control logic
• Interface logic
• Custom timing control circuits

Features

• Electrically Erasable Programmable Logic
• Programmable AND array, fixed OR array architecture
• 21 inputs and 10 outputs
• High-speed performance (5ns propagation delay, indicated by "-5" in the part number)
• Output macrocells configurable for different output types (registered, combinatorial, etc.)

Benefits

• Reprogrammability allows for design changes and corrections without replacing the chip.
• Flexibility to implement a wide range of logic functions.
• High-speed operation suitable for demanding applications.
• Reduced component count compared to discrete logic solutions.
• Simplified design process with programmable logic.

Additional Details

The PALCE21V10H-5JC operates on a 5V power supply. The 'H' in the part number typically denotes a high-performance version. The 'JC' usually refers to the package type, most likely a ceramic DIP (Dual In-line Package) suitable for prototyping and through-hole mounting. The device is programmed using a dedicated PAL programmer. It is designed to replace multiple discrete logic gates, reducing board space and improving system reliability. It is designed for applications requiring fast switching speeds. The PALCE21V10H-5JC provided a significant advantage over older, one-time programmable PAL devices because it could be erased and reprogrammed multiple times, allowing designers to correct errors and make design changes without having to discard the original device. AMD was a leading manufacturer of programmable logic devices and the PALCE21V10 family was a popular choice for a variety of applications.