TIBPAL20R6-15CFN

Overview

The TIBPAL20R6-15CFN is a High-Performance IMPACT PAL circuit manufactured by Texas Instruments. It features 12 inputs, 6 registered outputs with 3-state buffers, and 2 I/O ports within a 24-pin Plastic Quad Flatpack (FN) package. The device operates on a nominal 5 V supply and supports a maximum clock frequency of 45 MHz. Propagation delay from input to output is typically 15 ns, while the clock-to-Q delay is typically 12 ns. It functions as a functional substitute for conventional TTL logic, utilizing Advanced Low-Power Schottky technology.

Feature Summary

• High-speed performance with a maximum clock frequency of 45 MHz and typical propagation delays of 12–15 ns.
• Registered output architecture providing 6 Q outputs with 3-state control and 2 dedicated I/O ports.
• Preload capability allows asynchronous loading of registers to simplify system testing and initialization.
• Power-up clear feature resets all registers to zero upon power application.

Applications

• State machine implementation requiring synchronous state storage.
• Decoding and address translation in digital systems.
• Replacement for discrete TTL logic gates to reduce board space.
• Interface logic for microprocessor-based systems.

Procurement Notes

Verify that the FN suffix corresponds to the Plastic Quad Flatpack package type required for the design. Confirm the 'C' suffix indicates the commercial temperature range of 0°C to 75°C. Ensure programming equipment supports the specific fuse structure and voltage levels defined in the datasheet for reliable configuration.

Selection Notes

Select this model when 6 registered outputs and 2 I/O lines are necessary. Choose the FN package for surface-mount applications requiring reduced board area compared to DIP options. Consider the M suffix if military temperature ratings (-55°C to 125°C) are required instead of the commercial C suffix.

Part Context

This component belongs to the TIBPAL20 series of High-Performance IMPACT PAL circuits. It is functionally equivalent but faster than legacy PAL20R6 devices. The series includes variants like TIBPAL20L8, TIBPAL20R4, and TIBPAL20R8, differing primarily in output registration and I/O port configurations.

Replacement Considerations

Publicly confirmed substitutes include other Texas Instruments TIBPAL20R6 variants such as TIBPAL20R6-20MFKB or TIBPAL20R6-15CNT3, provided package and temperature specifications match the application requirements.