PALCE20V8H-7JC/5

Overview

The PALCE20V8H-7JC/5 is an advanced programmable array logic (PAL) device manufactured by Lattice Semiconductor. Built with low-power, high-speed electrically erasable CMOS technology, it features a universal macrocell architecture compatible with GAL20V8 standards. The '-7' suffix indicates a maximum propagation delay of 7.5 ns. It supports direct replacement for various 24-pin combinatorial PAL devices and offers individually programmable registered or combinatorial outputs with preloadable registers for testability.

Feature Summary

• Electrically erasable CMOS technology enabling reconfigurable logic
• Pin and function compatible with standard PAL20V8 devices
• 7.5 ns propagation delay for the -7 speed grade
• Programmable output polarity and enable/disable control

Applications

• Direct plug-in replacement for legacy 24-pin PAL devices
• PCI compliant logic interfacing
• General-purpose combinational and registered logic implementation

Procurement Notes

Verify the specific package type associated with the 'JC' suffix against official Lattice documentation to ensure physical compatibility. Confirm that the design software used supports the PALCE20V8 programming file generation and that appropriate hardware programmers are available for configuration.

Selection Notes

Select this component when a drop-in replacement for older PAL20R8 or GAL20V8 designs is required without redesigning the PCB footprint. Choose the -7 speed grade if system timing requirements allow for up to 7.5 ns delays. Ensure the application benefits from electrically erasable reprogramming capabilities compared to one-time programmable alternatives.

Part Context

This part belongs to the PALCE family of complex logic devices, bridging the gap between traditional fixed-function PALs and more flexible CPLDs. It utilizes Lattice's EEPROM-based non-volatile memory technology, allowing for multiple in-system reprogramming cycles while maintaining high-speed performance characteristics suitable for industrial and commercial applications.

Replacement Considerations

The datasheet confirms direct compatibility with GAL20V8 and PAL20R8 series devices. Verify pinout alignment before substitution to ensure correct power and ground connections.