GAL20V8B-15QJ

Programmable Logic Device Pld Overview

The GAL20V8B-15QJ is a discontinued Generic Array Logic device from Lattice Semiconductor, utilizing E2CMOS technology for electrically erasable programmability. It features eight Output Logic Macrocells (OLMCs) and supports registered, complex, and simple logic modes. The component operates within a voltage range of +4.75 V to +5.50 V and an industrial temperature range of -40°C to +85°C. Key electrical specifications include a maximum propagation delay of 15 ns, a typical operating supply current of 75 mA, and a maximum clock frequency of 62.5 MHz with internal feedback.

Programmable Logic Device Pld Feature Summary

• E2CMOS Technology: Electrically erasable floating gate architecture with high-speed erase times under 100 ms and 20-year data retention.
• Flexible OLMC Architecture: Supports Registered, Complex, and Simple modes to emulate various PAL architectures like 20R8 or 20L8.
• Active Pull-ups: All pins feature active pull-up resistors to ensure defined states.
• Electronic Signature: Includes 64 bits of reprogrammable memory for user-defined identification data.

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 specific part number has been officially discontinued by Lattice Semiconductor per Product Change Notification PCN#13-10. No new units are manufactured. Verification of availability is restricted to existing surplus inventory held by third-party distributors or secondary market suppliers. Designers must confirm the authenticity and storage history of any available stock due to the component's end-of-life status.

Programmable Logic Device Pld Selection Notes

When selecting this device, verify that the required speed grade (-15 ns) meets the system timing constraints, as faster variants like -10 ns exist. Ensure the design utilizes the PLCC-28 package footprint. Consider the power consumption profile, as the standard 'B' variant draws approximately 75 mA, which is higher than the 'Q' (Quarter Power) or 'L' (Low Power) options if lower energy usage is a priority.

Programmable Logic Device Pld Part Context

The GAL20V8B-15QJ belongs to the GAL20V8B product line, which represents the industrial-grade version of the GAL20V8 family. This family was designed to provide high-performance CMOS logic with the flexibility of EEPROM-based reprogramming, serving as a modern replacement for one-time programmable PAL devices in legacy digital designs.

Programmable Logic Device Pld Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Due to the discontinued status, designers should evaluate modern CPLD or FPGA alternatives from Lattice or other manufacturers that offer pin-compatible packages and similar logic density.