TIBPAL16R8-12CFN

Overview

The TIBPAL16R8-12CFN is a high-performance Impact PAL circuit manufactured by Texas Instruments. It belongs to the Simple Programmable Logic Device (SPLD) category, featuring a fixed AND-array and programmable OR-array structure. The device provides eight registered outputs and twelve dedicated inputs within a 20-pin ceramic flatpack (FN) package. Designed for TTL logic compatibility, it operates with a supply voltage range of 4.5 V to 5.5 V. The component supports an industrial temperature range from -55°C to +125°C, ensuring reliability in demanding environments.

Feature Summary

• High-speed performance with a typical propagation delay of 12 ns
• Eight registered outputs with global clock and reset control
• TTL-compatible input and output levels
• Robust construction in a 20-lead ceramic flatpack package

Applications

• State machine implementation in digital control systems
• Address decoding and memory interface logic
• Data bus switching and protocol conversion
• Timing generation and pulse shaping circuits

Procurement Notes

Verify the specific suffix CFN to confirm the ceramic flatpack package variant. Confirm the -12 speed grade matches the required timing constraints. Check for RoHS compliance status as legacy parts may have varying environmental declarations. Ensure the source is an authorized distributor or certified aftermarket supplier due to potential obsolescence.

Selection Notes

Select this part when registered output functionality is required for synchronous design. Compare against the TIBPAL16R8-15 variant if slower speeds are acceptable for lower power consumption. Verify pinout compatibility with existing footprints, as package dimensions differ from DIP or LCC options. Consider the thermal characteristics of the ceramic package for high-temperature operation.

Part Context

This component is part of the TI Impact PAL family, which succeeded earlier standard PAL series. It offers improved speed and drive capability compared to legacy devices. The TIBPAL16R8 designation indicates 16 macrocells with registered outputs. It serves as a drop-in replacement for older PAL16R8 designs requiring higher performance.

Replacement Considerations

Direct functional equivalents include the TIBPAL16R8-15CFN for slower speed requirements. Cross-reference with National Semiconductor NSPAL16R8 variants for pin-compatible alternatives. Verify that any substitute maintains the registered output configuration and TTL voltage levels.