GAL20V8B-15LJ

Programmable Logic Device Pld Overview

The GAL20V8B-15LJ is a discontinued Simple Programmable Logic Device (SPLD) manufactured by Lattice Semiconductor. It utilizes E2CMOS technology and features an industrial temperature range of -40°C to +85°C. The device provides 20 inputs, 8 I/O lines, and 8 output logic macrocells within a 28-pin PLCC package. Key electrical parameters include a maximum propagation delay of 15 ns, a typical operating supply current of 75 mA, and a maximum clock frequency of 58.8 MHz with external feedback.

Programmable Logic Device Pld Feature Summary

• E2CMOS Technology: Electrically erasable floating gate architecture allowing reprogrammability with high-speed erase times under 100ms and over 20 years data retention.
• Flexible OLMC Configuration: Supports Registered, Complex, and Simple modes to emulate various PAL architectures like 20R8, 20L8, and 20P8.
• Active Pull-ups: All pins feature active pull-up resistors for improved signal integrity.
• Electronic Signature: Includes 64 bits of user-reprogrammable memory for identification or revision tracking.

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 per Product Change Notification PCN#06-07. No new units are available from the manufacturer. Verification of availability requires checking secondary market distributors or Rochester Electronics for existing inventory. Designers must account for end-of-life status when planning production.

Programmable Logic Device Pld Selection Notes

Select this part only if legacy compatibility with specific PAL fuse maps is required. Verify that the 15 ns speed grade meets system timing constraints. Ensure the design accommodates the 28-pin PLCC footprint. Consider modern SPLD replacements if new procurement is necessary due to discontinuation.

Programmable Logic Device Pld Part Context

The GAL20V8B series belongs to Lattice's Generic Array Logic family, designed to replace standard bipolar PAL devices. The 'B' suffix denotes the specific product line iteration, while 'LJ' indicates Low Power consumption in a Lead-free PLCC package. This device bridges the gap between fixed logic gates and complex programmable logic.

Programmable Logic Device Pld Replacement Considerations

No direct public substitute part numbers are listed in the datasheet. Discontinued parts may be sourced through authorized aftermarket distributors or Rochester Electronics.