TIBPAL20R4-10CFN

Overview

The TIBPAL20R4-10CFN is a Simple Programmable Logic Device (SPLD) from Texas Instruments, belonging to the Impact PAL family. It features a PAL-type architecture with 20 inputs and 4 registered outputs. The device operates on a 5 V supply and supports a maximum clock frequency of 100 MHz, with a propagation delay of 10 ns. It is housed in a 28-pin Ceramic Flatpack (CFN) package, designed for industrial temperature ranges.

Feature Summary

• Impact PAL Architecture: Low-power high-performance circuit technology optimized for complex logic functions.
• Registered Outputs: Includes D-type flip-flops on all four output pins for synchronous design applications.
• High-Speed Performance: Supports up to 100 MHz clock frequency with 10 ns typical propagation delay.
• Industrial Temperature Range: Rated for operation between -55°C and +125°C.

Applications

• Synchronous state machine implementations
• Address decoding and control logic in industrial systems
• Bus interface protocols requiring registered outputs
• Timing correction and pulse stretching circuits

Procurement Notes

Verify the ceramic flatpack package integrity upon receipt, as CFN packages are sensitive to mechanical stress during handling. Confirm that the component meets MIL-STD-883 or equivalent military-grade screening requirements if specified for the application, as TI Impact PALs often carry specific qualification levels distinct from commercial variants.

Selection Notes

Select the TIBPAL20R4-10CFN when registered outputs are required for synchronous designs within the Impact PAL family. The '10' suffix indicates a 10 ns speed grade, suitable for high-frequency applications up to 100 MHz. Ensure the design tool supports the specific macrocell configuration of the R4 variant, which differs from combinatorial-only PALs.

Part Context

This component is part of Texas Instruments' Impact PAL series, a legacy line of programmable logic devices known for high performance and low power consumption. The TIBPAL20R4-10CFN specifically denotes the ceramic flatpack package variant, offering superior thermal and environmental stability compared to plastic DIP versions, making it suitable for harsh industrial environments.

Replacement Considerations

Direct pin-compatible replacements include other Impact PAL devices with similar I/O counts and registered outputs, such as the TIBPAL20R4-15CFN (slower speed grade). Verify that any substitute maintains the same registered output structure and voltage levels.