GAL20V8B-25LPI

Programmable Logic Device Pld Overview

The GAL20V8B-25LPI is a discontinued Simple Programmable Logic Device (SPLD) from the GAL20V8B series, manufactured by Lattice Semiconductor. It utilizes high-performance E2CMOS technology and features an industrial temperature range of -40°C to +85°C. The device operates at a supply voltage between 4.50V and 5.50V with a typical operating current of 75mA. It provides eight Output Logic Macrocells (OLMCs) within a 24-pin Plastic DIP package. Key electrical specifications include a maximum propagation delay of 25ns, a maximum clock frequency of 37MHz with external feedback, and a maximum clock frequency of 41.7MHz with no feedback.

Programmable Logic Device Pld Feature Summary

• High Performance E2CMOS Technology: Features active pull-ups on all pins and supports reconfigurable logic with 100% tested yields.
• Reprogrammable Architecture: Utilizes Electrically Erasable (E2) floating gate technology allowing for rapid erasure in under 100ms and data retention exceeding 20 years.
• Flexible OLMC Configuration: Supports Registered, Complex, and Simple modes, enabling emulation of various PAL architectures such as 20R8, 20L8, and 16P6.
• Industrial Grade Reliability: Designed for operation across a wide ambient temperature range (-40°C to +85°C) with robust DC characteristics.

Programmable Logic Device Pld Applications

• DMA Control
• State Machine Control
• High Speed Graphics Processing
• Standard Logic Speed Upgrade

Programmable Logic Device Pld Procurement Notes

This component has been officially discontinued by Lattice Semiconductor pursuant to Product Change Notification (PCN) #13-10. No new production units are available from the manufacturer. Verification of availability should be restricted to existing inventory held by third-party distributors or specialized surplus suppliers. Designers must confirm that any sourced units are genuine and meet original specifications before integration.

Programmable Logic Device Pld Selection Notes

Select this part only if legacy compatibility with specific PAL fuse maps or parametric requirements is necessary. For new designs, consider modern SPLDs or CPLDs with active manufacturing support. Verify that the 25ns speed grade meets system timing constraints, particularly regarding the 37MHz maximum clock frequency with external feedback. Ensure the design accommodates the 24-pin DIP footprint or requires appropriate adapter solutions.

Programmable Logic Device Pld Part Context

The GAL20V8B-25LPI belongs to the GAL20V8B product line, which represents the bipolar-compatible variant of the GAL20V8 family. This series was engineered to provide higher performance and lower power consumption compared to traditional bipolar PAL devices while maintaining functional and pinout compatibility. The 'L' suffix indicates Low Power consumption, and 'I' denotes the Industrial temperature rating.

Programmable Logic Device Pld Replacement Considerations

No direct public substitute part numbers are listed in the discontinuation notice. Users requiring equivalent functionality should evaluate modern Lattice CPLDs or other vendors' GAL replacements. Compatibility checks must verify macrocell architecture, pinout mapping, and electrical parameters against the target application requirements.