PAL20R8B2CNS

Programmable Logic Device Pld Overview

The PAL20R8B-2CNS is a high-performance Programmable Array Logic (PAL) device manufactured by Vantis Corporation. It features an Over-The-Line (OTL) architecture with 20 inputs and 8 registered outputs, providing 64 product terms for complex logic implementation. The component operates at a maximum clock frequency of 25 MHz with a propagation delay of 25 ns. Designed for TTL compatibility, it functions on a single 5V supply. The device is housed in a 20-pin Plastic Dual In-line Package (PDIP), suitable for through-hole mounting in industrial and commercial applications requiring reliable synchronous logic control.

Programmable Logic Device Pld Feature Summary

• PAL-type architecture with 20 inputs and 8 registered outputs
• 25 ns propagation delay and 25 MHz maximum clock frequency
• TTL compatible input/output levels
• Single 5V power supply operation

Programmable Logic Device Pld Applications

• Synchronous state machine design
• Address decoding in memory systems
• Interface logic between microprocessors and peripherals
• General-purpose registered logic replacement

Programmable Logic Device Pld Procurement Notes

Verify the specific suffix 'CNS' against official Vantis documentation to confirm package type and temperature range. Ensure compliance with RoHS directives if required, as older PAL devices may not be certified. Confirm pinout compatibility with existing PCB footprints before procurement.

Programmable Logic Device Pld Selection Notes

Select this component when registered outputs are required for timing synchronization. Compare with non-registered variants like PAL16R6 if output latching is unnecessary. Ensure the 20-pin PDIP footprint fits the assembly constraints. Verify voltage levels match the system's 5V logic family.

Programmable Logic Device Pld Part Context

This part belongs to the Vantis PAL series, which succeeded earlier AMD PAL designs. The 'B' suffix typically denotes registered outputs, while '2' indicates the speed grade. Vantis continued production of these legacy PLDs after acquiring AMD's logic division, maintaining pin compatibility with original specifications.

Programmable Logic Device Pld Replacement Considerations

Direct replacements include PAL20R8B-2CN from other manufacturers like National Semiconductor or TI, provided the package matches. Verify electrical parameters such as propagation delay and I/O characteristics to ensure functional equivalence.