GAL20V8B-15QPN

Programmable Logic Device Pld Overview

The GAL20V8B-15QPN is a discontinued Electrically Erasable Programmable Logic Device (EE PLD) manufactured by Lattice Semiconductor. It utilizes high-performance E2CMOS technology and features a 28-pin Plastic Leadless Chip Carrier (PLCC) package. The device provides 10 dedicated inputs, 8 I/O lines, and eight Output Logic Macrocells (OLMCs). Key electrical parameters include a maximum propagation delay of 15 ns, a typical operating supply current of 75 mA for the low-power variant, and an operating temperature range of -40°C to +85°C for industrial grade.

Programmable Logic Device Pld Feature Summary

• High Performance E2CMOS Technology with 15 ns maximum propagation delay
• Reprogrammable E2 Cell Architecture with 100 erase/write cycles and >20 year data retention
• Eight configurable Output Logic Macrocells supporting Registered, Complex, and Simple modes
• Active pull-ups on all pins and programmable output polarity

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 per Product Change Notification (PCN) #09-10. No new units are available from the manufacturer. Verification of availability requires checking third-party distributors or surplus inventory providers. Designers should confirm lead times and authenticity carefully when sourcing from secondary markets.

Programmable Logic Device Pld Selection Notes

Select this part only if legacy compatibility with specific PAL fuse maps or existing GAL20V8 designs is required. Consider the 15 ns speed grade and PLCC-28 package constraints. Evaluate power consumption requirements against the 75 mA typical supply current. Verify that the target application does not require RoHS compliance if the non-N suffix version is sourced.

Programmable Logic Device Pld Part Context

The GAL20V8B series belongs to Lattice's Generic Array Logic family, designed to emulate various 20-pin PAL devices while offering reprogrammability. The 'B' suffix denotes the Industrial Grade specification, and 'QPN' indicates Quarter Power consumption, Plastic DIP packaging, and Lead-free construction. This device represents a transition technology between traditional fuses and modern CPLDs.

Programmable Logic Device Pld Replacement Considerations

Lattice issued PCN #09-10 indicating discontinuation. Potential substitutes include other EE PLDs from Lattice or generic SPLDs, though pin-to-pin replacement may require schematic review due to architectural differences in macrocell configuration.