GAL20V8QS-15QVC

Programmable Logic Device Pld Overview

The GAL20V8QS-15QVC is an Electrically Erasable Programmable Logic Device (EE PLD) manufactured by National Semiconductor, now part of Texas Instruments. It utilizes a PAL-type architecture with CMOS technology housed in a 28-pin Plastic Leaded Crystal Carrier (PLCC) package. The device features 20 input lines and 8 output lines, organized into 8 macrocells. It supports a maximum clock frequency of approximately 41.6 MHz with a propagation delay of 15 ns. Key functional attributes include shared input/clock capabilities and register preload functionality, designed for high-speed digital logic applications.

Programmable Logic Device Pld Feature Summary

• PAL-type EE PLD architecture with 8 macrocells
• 20 dedicated inputs and 8 I/O lines
• 15 ns propagation delay supporting up to 41.6 MHz
• Register preload and shared input/clock features

Programmable Logic Device Pld Applications

• High-speed digital logic replacement
• State machine implementation
• Address decoding circuits

Programmable Logic Device Pld Part Context

This component belongs to the GAL20V8 family of electrically erasable programmable logic devices. The 'QS' suffix typically denotes a plastic leaded crystal carrier (PLCC) package variant, while '15' indicates the 15 ns speed grade. National Semiconductor's GAL series was widely adopted as a drop-in replacement for older PAL devices, offering reprogrammability without the complexity of complex PLDs.

Programmable Logic Device Pld FAQ

What is the package type for the GAL20V8QS-15QVC?

It uses a 28-pin Plastic Leaded Crystal Carrier (PLCC) package.

Does this device support register preload?

Yes, the device specifications confirm support for register preload functionality.

What is the maximum operating temperature?

The maximum operating temperature is specified as 70 °C.