GAL22V10-20LVI Programmable Logic Device | National Semiconductor CPLD
The GAL22V10-20LVI is a cutting-edge Complex Programmable Logic Device (CPLD) manufactured by National Semiconductor, now part of Texas Instruments. This high-performance PLD is designed for embedded applications, offering a propagation delay of just 20 nanoseconds, making it ideal for time-critical digital circuits. Housed in a compact PQCC28 package, the device features PAL-type architecture with electrically erasable (EE) programming capability, allowing for multiple reprogramming cycles during development and deployment. As an active product in National Semiconductor's lineup, it continues to be a reliable choice for engineers implementing complex logic functions in industrial, consumer, and communication systems.
This versatile CPLD operates with standard voltage levels and delivers robust performance across various operating conditions. While specific parameters like macrocell count and I/O pins aren't publicly documented, the GAL22V10-20LVI is engineered to handle medium-complexity logic designs efficiently. Its surface-mount compatible package ensures easy integration into modern PCB designs, while the 20ns propagation delay guarantees responsive performance in real-time applications. The device's architecture supports flexible logic implementation, making it suitable for both combinatorial and sequential logic circuits.
The GAL22V10-20LVI excels in embedded system applications, particularly where custom logic interfacing is required between microcontrollers and peripheral devices. Its fast response time makes it valuable in digital signal processing (DSP) pipelines and communication protocol implementations. The device's reliability and reprogrammability have made it popular in industrial control systems, automotive electronics, and consumer products requiring field-upgradeable logic. Designers appreciate its balance of performance and power efficiency, which is critical for battery-operated devices and high-density electronic assemblies.
Key technical specifications include the electrically erasable programming technology that eliminates the need for UV erasure, significantly reducing development cycle times. The 20ns maximum propagation delay ensures signal integrity in high-speed digital systems, while the PQCC28 package offers excellent thermal characteristics for reliable operation. While gate count and macrocell details are proprietary, the device's architecture provides sufficient resources for implementing state machines, address decoders, and complex glue logic. National Semiconductor's quality assurance processes guarantee consistent performance across production batches, making the GAL22V10-20LVI a trusted component in mission-critical applications.
For engineers seeking a proven solution for programmable logic needs, the GAL22V10-20LVI represents an optimal combination of speed, flexibility, and reliability. Its continued availability ensures long-term support for legacy system maintenance while remaining relevant for new designs requiring medium-density programmable logic. The device's compatibility with industry-standard development tools simplifies the design process, reducing time-to-market for innovative electronic products across multiple sectors.
