TIBPAL20L10-20CFN

Overview

The TIBPAL20L10-20CFN is a complex programmable logic device (CPLD) manufactured by Texas Instruments, belonging to the PAL-type architecture family. It features 20 input pins and 10 output pins, providing 40 product terms for logic implementation. The device operates on a nominal 5 V supply voltage and supports combinatorial output functions. It is housed in a 28-pin ceramic flatpack package with a specified maximum propagation delay of 20 ns. The component is designed for industrial temperature ranges, typically spanning from -55 °C to +125 °C, ensuring reliability in demanding electronic environments.

Feature Summary

• PAL-type architecture with 20 inputs and 10 outputs
• 40 product terms for flexible logic configuration
• Combinatorial output function type
• 20 ns maximum propagation delay at 5 V supply

Applications

• Digital logic replacement in legacy systems
• Address decoding and chip select generation
• Simple state machine implementation
• Bus interface logic adaptation

Procurement Notes

Verify the specific suffix 'CFN' corresponds to the ceramic flatpack package variant when sourcing. Confirm RoHS compliance status as older PAL devices may not meet current environmental standards. Ensure the supplier provides traceability documentation for military or industrial grade specifications if required for the application.

Selection Notes

Select this component when a fixed-function PAL replacement is needed with 20 inputs and 10 outputs. Compare against the TIBPAL20L10-25 series if a slower 25 ns speed is acceptable for cost reduction. Verify that the 28-pin ceramic package fits the existing PCB footprint and thermal requirements compared to plastic DIP alternatives.

Part Context

This part belongs to the Texas Instruments TIBPAL series, which are direct replacements for standard PAL devices. The TIBPAL20L10 variant specifically offers 20 inputs and 10 outputs. The 'CFN' suffix denotes the ceramic flatpack package, distinguishing it from plastic DIP or leadless ceramic chip carrier options within the same logical specification.

Replacement Considerations

Direct pin-compatible replacements include other TIBPAL20L10 variants with different speed grades or packages, such as TIBPAL20L10-25CFN. Verify electrical compatibility before substituting with generic PAL20V8 equivalents, as pinouts and power requirements may differ.