EPX780LC84-12

Complex Programmable Logic Devices Overview

The EPX780LC84-12 is an EPLD (Enhanced Programmable Logic Device) from the Altera EXCEL II family, housed in a PLCC-84 package. It features 780 system gates and supports operation at clock frequencies up to 133 MHz with a propagation delay of 12 ns. The device utilizes CMOS technology and operates within a voltage range of 2.7 V to 3.6 V. It includes 64 macrocells organized into logic array blocks, providing flexible I/O capabilities for digital logic applications requiring high-speed performance in compact surface-mount packages.

Complex Programmable Logic Devices Feature Summary

• EXCEL II architecture with 780 system gates and 64 macrocells
• High-speed performance: 133 MHz max frequency, 12 ns propagation delay
• Single 3.3V power supply operation (2.7V - 3.6V range)
• PLCC-84 plastic leaded chip carrier package

Complex Programmable Logic Devices Applications

• High-speed interface bridging between legacy and modern logic families
• State machine implementation in communication equipment
• Address decoding and bus control in embedded systems
• Timing correction and protocol conversion circuits

Complex Programmable Logic Devices Part Context

This component belongs to the EXCEL II series, representing an evolution over the original MAX 7000 family with improved speed and density. The 'EPX' designation identifies it as an Enhanced Programmable Logic Device. The LC84 suffix indicates the specific gate count and 84-pin PLCC package variant, distinguishing it from other pinouts or densities within the same product line.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other EXCEL II devices with similar gate counts and pinouts, such as the EPX780LC100 if timing requirements allow for slower speeds. Cross-family migration to MAX II or MAX V may require schematic redesign due to architectural differences in macrocell structure and I/O standards.