GAL20V8QS-10LNC: National Semiconductor's 10ns EE PLD for High-Speed Logic Applications
The GAL20V8QS-10LNC is a cutting-edge Electrically Erasable Programmable Logic Device (EE PLD) manufactured by National Semiconductor, now part of Texas Instruments. This high-performance PAL-TYPE CPLD delivers an impressive 10-nanosecond propagation delay, making it ideal for applications demanding rapid signal processing and real-time control. With its reprogrammable architecture, engineers can implement complex logic functions while maintaining the flexibility to update designs as requirements evolve. The device operates reliably across industrial temperature ranges, ensuring stability in harsh environments.
Featuring advanced macrocell technology, the GAL20V8QS-10LNC supports both combinatorial and sequential logic operations. Its architecture includes 20 inputs and 8 outputs (I/O configuration varies by design), providing ample connectivity for system integration. The CMOS-based design ensures low power consumption without compromising speed, while the electrically erasable cells allow for 100+ programming cycles. Packaged in a standard PLCC or similar form factor, this PLD is compatible with industry-standard programmers and fits seamlessly into existing PCB layouts.
Key technical specifications include 10ns maximum pin-to-pin delay, 5V operating voltage, and 24-pin packaging. The device supports JTAG programming (where applicable) and features security fuses to protect intellectual property. National Semiconductor's quality assurance ensures high reliability with typical MTBF ratings exceeding 100,000 hours. Designers benefit from comprehensive development tool support, including HDL synthesis and simulation tools from major EDA vendors.
The GAL20V8QS-10LNC excels in telecommunications infrastructure (protocol conversion, signal routing), industrial automation (motor control, sensor interfacing), and consumer electronics (display controllers, peripheral interfaces). Its 10ns speed makes it particularly suitable for high-speed data path management and real-time system control. Compared to conventional PAL devices, it offers greater design flexibility through reprogrammability while maintaining backward compatibility with existing PAL architectures. The device's predictable timing characteristics simplify system-level timing analysis, reducing development cycles.
For engineers seeking a cost-effective, high-performance PLD solution, the GAL20V8QS-10LNC delivers superior speed-grade options within its class. National Semiconductor provides comprehensive documentation, including detailed datasheets, application notes, and reference designs to accelerate implementation. Available through authorized distributors worldwide, this PLD combines legacy support with modern reprogrammability, making it an excellent choice for both new designs and upgrades to existing systems requiring faster logic execution.
