GAL20V8QS-25QVC

Programmable Logic Device Pld Overview

The GAL20V8QS-25QVC is an Electrically Erasable Programmable Logic Device (EE PLD) manufactured by Texas Instruments. It features a PAL-type architecture with 20 inputs, 8 outputs, and 8 macrocells. The device operates with a maximum propagation delay of 25 ns and supports a maximum clock frequency of 37 MHz. It is housed in a 28-pin Plastic Quad Flat Package (PQCC28). Key functional attributes include shared input/clock capabilities and register preload functionality.

Programmable Logic Device Pld Feature Summary

• PAL-type EE PLD architecture with 64 product terms
• 25 ns propagation delay and 37 MHz max clock frequency
• 20 dedicated inputs and 8 I/O lines via 8 macrocells
• Supports register preload and shared input/clock configurations

Programmable Logic Device Pld Applications

• Digital logic replacement for discrete gate circuits
• State machine implementation in control systems
• Address decoding and bus arbitration logic

Programmable Logic Device Pld Procurement Notes

Verify the manufacturer designation, as the component is listed under Texas Instruments despite the query specifying National Semiconductor. Confirm RoHS compliance status, as the provided data indicates non-compliance. Ensure the PQCC28 package variant matches the design requirements before procurement.

Programmable Logic Device Pld Selection Notes

Select this component when a fast PAL-type solution with EEPROM reprogrammability is required. The 25 ns speed suits moderate-frequency digital applications. Verify that the 20-input/8-output configuration meets the logic density needs without excessive unused resources.

Programmable Logic Device Pld Part Context

This part belongs to the GAL20V8 family of electrically erasable programmable logic devices. It serves as a drop-in replacement for older OTP GAL20V8 devices while offering the advantage of field reprogrammability. The QS suffix typically denotes specific packaging or temperature grade variations within the series.

Programmable Logic Device Pld Replacement Considerations

Compatible replacements include the Lattice GAL20V8A-20QJIB and Samsung CPL20V8-25NLC. These alternatives share similar pinouts and logical structures but may differ in propagation delay specifications and operating temperature ranges.