PALCE20V8H-25E4/B3A

Overview

The PALCE20V8H-25E4/B3A is a high-speed, Flash Erasable, Reprogrammable CMOS Programmable Array Logic (PAL) device manufactured by Advanced Micro Devices. It features 20 input/output pins and supports up to 16 macrocells for complex logic implementation. The device operates with a maximum propagation delay of 25 ns and requires a standard 5 V supply voltage. It utilizes Cypress/AMD Flash technology, allowing for non-volatile reprogramming without the need for ultraviolet light or special erasing equipment.

Feature Summary

• Flash Erasable and Reprogrammable CMOS technology
• High-speed performance with 25 ns maximum propagation delay
• 20 I/O pins supporting complex logic functions
• Standard 5 V operating voltage

Applications

• Complex glue logic replacement in digital systems
• Address decoding and control logic generation
• State machine implementation in industrial controllers
• Signal routing and protocol conversion interfaces

Procurement Notes

Verify the manufacturer origin, as AMD's semiconductor assets were acquired by Cypress, which was subsequently acquired by Infineon. Confirm the specific suffix 'B3A' corresponds to the requested ceramic package variant through official datasheets. Ensure compatibility with existing programming tools that support the PALCE20V8 architecture.

Selection Notes

Select this component when a reprogrammable solution is required for logic designs needing 20 I/Os and 25 ns speed. Compare against the PALCE20V8-25JC for pin-compatible alternatives. Verify that the system design accommodates the 5 V logic levels and that the Flash endurance specifications meet the project's rewrite requirements.

Part Context

This part belongs to the PALCE20V8 family of high-density PLDs. It serves as a direct upgrade to older OTP PAL devices like the PAL20L6, offering the advantage of field reprogrammability. The H-series typically denotes high-speed variants within the product line.

Replacement Considerations

Direct pin-for-pin replacements include the PALCE20V8-25JC. For modern equivalents, consider GAL16V8-based solutions if logic density permits, though pin counts will differ. Verify electrical characteristics match before substituting.