GAL16V8QS-25QVC

Programmable Logic Device Pld Overview

The GAL16V8QS-25QVC is an Electrically Erasable Programmable Logic Device (EE PLD) manufactured by National Semiconductor. It features a PAL-type architecture with 16 input lines and 8 output lines, housed in a 28-pin Plastic Quad Flat Package (PQCC). The device operates with a maximum propagation delay of 25 ns and supports a maximum clock frequency of 37 MHz. It includes 8 macrocells with shared input/clock capabilities and register preload functionality. The component is designed for high-speed logic applications within specified temperature ranges.

Programmable Logic Device Pld Feature Summary

• PAL-type EE PLD architecture with 16 inputs and 8 outputs
• 25 ns maximum propagation delay and 37 MHz max clock frequency
• 8 macrocells with shared input/clock and register preload
• 28-pin PQCC plastic package

Programmable Logic Device Pld Applications

• High-speed digital logic replacement
• State machine implementation
• Address decoding circuits
• Bus protocol translation

Programmable Logic Device Pld Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor's logic assets were acquired by Texas Instruments. Confirm that the specific suffix 'QS' corresponds to the required package type and environmental compliance status for your design. Check current availability through authorized distributors or TI channels, as legacy PLDs may have limited stock or end-of-life status.

Programmable Logic Device Pld Selection Notes

Select this component when a fast, electrically erasable PAL-compatible solution is required with 16 inputs and 8 registered outputs. Ensure the design utilizes the 25 ns speed grade and 5V supply voltage. Compare against GAL16V8 variants if unregistered outputs are sufficient, or consider higher-density SPLDs if more I/O lines are needed. Verify pin compatibility with existing footprints.

Programmable Logic Device Pld Part Context

This part belongs to the GAL16V8 family of simple programmable logic devices, originally developed by Lattice Semiconductor and later supported by National Semiconductor before its acquisition by Texas Instruments. These devices serve as drop-in replacements for older TTL logic gates, offering reprogrammability and reduced board space compared to discrete gate arrays.

Programmable Logic Device Pld Replacement Considerations

Direct pin-compatible substitutes include other GAL16V8 variants from Lattice or Microchip. For functional equivalents with different packaging, verify electrical parameters such as Vcc tolerance and propagation delay. Cross-reference with Texas Instruments' current GAL series offerings for updated sourcing options.