GAL20V8B-25LPN

Programmable Logic Device Pld Overview

The Lattice Semiconductor Corporation GAL20V8B-25LPN is a discontinued Generic Array Logic (GAL) device utilizing high-performance E2CMOS technology. It features an operating supply voltage range of +4.50V to +5.50V and operates within an industrial temperature range of -40°C to +85°C. The component provides a maximum propagation delay of 25 ns, with a typical operating power supply current of 75 mA at 15 MHz toggle frequency. It includes eight output logic macrocells and supports reprogrammable logic configurations.

Programmable Logic Device Pld Feature Summary

• High Performance E2CMOS Technology: Features UltraMOS advanced CMOS technology with a maximum propagation delay of 25 ns and a maximum clock frequency of 37 MHz.
• Low Power Consumption: Utilizes Low Power (L) variant architecture, offering a 50% to 75% reduction in power compared to bipolar devices, with a typical ICC of 75 mA.
• Reprogrammable Architecture: Employs Electrically Erasable (E2) floating gate technology allowing for rapid erasure (<100ms), 100 erase/write cycles, and over 20 years data retention.
• Flexible Output Logic Macrocells (OLMC): Supports Registered, Complex, and Simple modes, enabling emulation of various PAL architectures like 20R8, 20L8, and 14L8.

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 part number is officially discontinued per Product Change Notification PCN#13-10. Verification of availability requires contacting authorized distributors or secondary market suppliers such as Rochester Electronics. Standard ordering suffixes indicate package type and lead-free status; confirm specific packaging details with the supplier before procurement.

Programmable Logic Device Pld Selection Notes

Select this device for applications requiring low-pin-count programmable logic replacement for legacy bipolar components. The '25' speed grade indicates a 25 ns maximum propagation delay, suitable for moderate-speed digital control circuits. Ensure designs account for the industrial temperature range (-40°C to +85°C) and verify that the required logic density fits within the 64x40 AND array capacity.

Programmable Logic Device Pld Part Context

The GAL20V8B series represents Lattice's electrically erasable PLD line, designed to replace complex discrete logic. The 'B' designation identifies the specific product family iteration, while 'LPN' denotes the Low Power variant in a Lead-free Plastic DIP package. This component belongs to the broader GAL20V8 family, which offers architectural compatibility with standard PAL devices.

Programmable Logic Device Pld Replacement Considerations

Due to discontinuation, direct substitutes are not listed by the manufacturer. Designers should evaluate modern CPLD alternatives from Lattice (such as MachXO or ICE40 families) or cross-reference with other manufacturers' GAL equivalents, ensuring pinout and logic function compatibility.

Programmable Logic Device Pld FAQ

What does the 'LP' suffix indicate in the model name?

The 'LP' suffix designates the Low Power variant of the GAL20V8B device, which typically draws a typical operating current of 75 mA, compared to higher consumption variants.

How many erase/write cycles does the GAL20V8B support?

The device supports 100 electrical erase/write cycles, with a specified data retention period exceeding 20 years.

Can the GAL20V8B emulate standard PAL devices?

Yes, the GAL20V8B can emulate various 24-pin PAL architectures, including 20R8, 20L8, and 14L8, through configuration of its Output Logic Macrocells (OLMC).