GAL20V8QS-15LVC

Programmable Logic Device Pld Overview

The GAL20V8QS-15LVC is a CMOS Electrically Erasable Programmable Logic Device (EE PLD) manufactured by National Semiconductor. It utilizes PAL-type architecture with 20 input lines and 8 output lines, housed in a 28-pin LDCC plastic package. The device features a maximum propagation delay of 15 ns and supports a maximum clock frequency of 47 MHz. Key electrical characteristics include register preload capability and shared input/clock resources across its eight macrocells.

Programmable Logic Device Pld Feature Summary

• CMOS EE PLD technology with PAL-type architecture
• 20 dedicated inputs and 8 I/O lines in a 28-pin LDCC package
• 15 ns maximum propagation delay and 47 MHz max clock frequency
• Register preload functionality for all macrocells

Programmable Logic Device Pld Applications

• Complex digital logic replacement
• State machine implementation
• Address decoding circuits

Programmable Logic Device Pld Part Context

This component belongs to the GAL20V8 family of programmable logic devices. It serves as a reprogrammable alternative to traditional fixed-function PALs, offering design flexibility through electrical erasure while maintaining pinout compatibility with legacy bipolar PAL devices.

Programmable Logic Device Pld Replacement Considerations

Verify that the replacement part maintains the same 28-pin LDCC package dimensions and electrical specifications. Ensure the substitute device supports the required 15 ns speed grade and CMOS voltage levels.