PAL20RS4CNS

Programmable Logic Device Pld Overview

The PAL20RS4CNS is a Programmable Array Logic (PAL) device manufactured by Advanced Micro Devices. It belongs to the PAL16L8/PAL20R family, featuring a registered output architecture with 20 pins in a PLCC package. The device includes 10 input lines and 8 registered outputs, providing synchronous data storage capabilities within the logic array. It operates with standard TTL voltage levels and supports a maximum clock frequency of 25 MHz. The component is designed for high-speed digital logic applications requiring fixed-function or user-programmable combinational and sequential logic structures.

Programmable Logic Device Pld Feature Summary

• PAL-type architecture with 64 product terms
• 10 dedicated inputs and 8 registered outputs
• Maximum operating frequency of 25 MHz
• Power-up reset and register preload features

Programmable Logic Device Pld Applications

• Synchronous state machine implementations
• Address decoding logic
• Data bus interface control
• General-purpose digital logic replacement

Programmable Logic Device Pld Procurement Notes

Verify RoHS compliance status as the source indicates non-compliance. Confirm package integrity for the PLCC-20 variant. Ensure programming equipment compatibility with AMD PAL devices. Check for obsolescence status given the vintage of the component. Validate supply chain authenticity through authorized distributors.

Programmable Logic Device Pld Selection Notes

Select this part when an 8-bit registered output PAL is required with 10 inputs. Compare against PAL16R8 variants if unregistered outputs suffice. Consider propagation delay specifications for timing-critical designs. Verify voltage level compatibility with system TTL standards. Assess pin count requirements against available package options.

Programmable Logic Device Pld Part Context

This component is part of AMD's legacy PAL series, preceding CPLD technologies. It serves as a drop-in replacement for older discrete logic circuits in industrial and computing equipment. The registered output configuration allows for synchronized data handling without external flip-flops. It represents a transitional technology between fixed logic gates and complex programmable devices.

Programmable Logic Device Pld Replacement Considerations

Direct replacements include other PAL20R-series devices from compatible manufacturers. CPLDs may offer functional equivalents with reprogrammability but require pin mapping adjustments. Verify electrical characteristics match before substitution. Check for package compatibility or adapter requirements.