GAL20V8-25LNC

Programmable Logic Device Pld Overview

The GAL20V8-25LNC is an Electrically Erasable Programmable Logic Device (EE PLD) manufactured by Texas Instruments, originally based on National Semiconductor technology. It utilizes a PAL-type architecture with CMOS technology, housed in a 24-pin PDIP package. The device features 20 inputs and 8 outputs, providing 64 product terms for logic implementation. Key electrical specifications include a propagation delay of 25 ns and a maximum clock frequency of 37 MHz. It operates at a nominal supply voltage of 5 V and supports register preload functionality within its macrocells.

Programmable Logic Device Pld Feature Summary

• PAL-type EE PLD architecture with 20 inputs and 8 outputs
• CMOS technology ensuring low power consumption
• 25 ns propagation delay suitable for moderate-speed applications
• 24-pin PDIP packaging for through-hole mounting

Programmable Logic Device Pld Applications

• General-purpose digital logic replacement
• Address decoding circuits
• Bus interface control logic
• State machine implementation

Programmable Logic Device Pld Procurement Notes

Verify the manufacturer origin carefully, as this component was originally designed by National Semiconductor but is now produced under license by Texas Instruments. Confirm the specific suffix 'LNC' corresponds to the PDIP-24 package and commercial temperature range. Ensure compatibility with existing programming tools for GAL devices before procurement.

Programmable Logic Device Pld Selection Notes

Select this component when a drop-in replacement for legacy National Semiconductor GAL20V8 designs is required in a DIP package. Compare the 25 ns speed grade against faster variants like the -15 or -10 if timing constraints are tight. Verify that the 5 V supply voltage matches the system design, as other voltage variants may exist.

Programmable Logic Device Pld Part Context

The GAL20V8 series represents a standard 20V8 configuration widely used in the transition from discrete logic to programmable logic. While National Semiconductor pioneered these devices, current production is managed by Texas Instruments following their acquisition of relevant assets. This specific part number denotes the slower 25 ns speed grade in a plastic dual in-line package.

Programmable Logic Device Pld Replacement Considerations

Direct pin-compatible replacements include GAL20V8-25QC or GAL20V8-25HC from various manufacturers such as Lattice or Atmel. Ensure the substitute maintains the same PAL architecture and I/O count. Verify that the replacement supports the necessary programming voltage and algorithm.