GAL22V10-20LVI

Programmable Logic Device Pld Overview

The GAL22V10-20LVI is a high-performance Electrically Erasable Programmable Logic Device (EPLD) manufactured by National Semiconductor. It utilizes E²CMOS technology to achieve a maximum propagation delay of 4ns, supporting clock frequencies up to 250MHz. The device features ten output logic macrocells and active pull-ups on all pins. It offers significant power reduction compared to bipolar equivalents, with typical ICC values of 90mA for low-power versions. Key capabilities include fast electrical erasure under 100ms, 20-year data retention, and full functional compatibility with standard bipolar and UVCMOS 22V10 devices.

Programmable Logic Device Pld Feature Summary

• High-performance E²CMOS technology with 4ns max propagation delay
• Ten output logic macrocells for complex design flexibility
• Active pull-ups on all I/O pins
• Fully compatible with standard 22V10 fuse maps and parameters

Programmable Logic Device Pld Applications

• DMA control systems
• State machine control
• High-speed graphics processing
• Standard logic speed upgrades

Programmable Logic Device Pld Part Context

This component belongs to the GAL22V10 family of generic array logic devices. The '20' suffix typically denotes a 20ns access time or specific speed grade variant within the broader GAL22V10 series, while 'LVI' indicates a plastic LDCC package type. It serves as a reconfigurable alternative to fixed-function gate arrays in digital logic designs.

Programmable Logic Device Pld Replacement Considerations

Direct replacements must match the 22V10 pinout and logic structure. Verify that substitute parts support E²CMOS erase cycles if reprogramming is required. Ensure voltage levels and package dimensions are compatible with existing PCB layouts.