TIBPAL16R8-25CN

Overview

The TIBPAL16R8-25CN is a low-power high-performance IMPACT PAL programmable logic device featuring eight registered outputs. It operates with a maximum propagation delay of 25 ns and supports clock frequencies up to 30 MHz. The device utilizes Advanced Low-Power Schottky technology with titanium-tungsten fuses for reliable performance. It functions within a supply voltage range of 4.75 V to 5.25 V and is characterized for operation from 0°C to 75°C.

Feature Summary

• High-speed logic implementation using Advanced Low-Power Schottky technology
• Registered outputs with power-up clear functionality for simplified state initialization
• Functionally equivalent to legacy PAL16R8A devices with improved performance
• Supports individual register preloading for efficient testing

Applications

• Complex digital logic replacement in industrial control systems
• State machine implementation requiring synchronous output registration
• Custom interface adapters for legacy TTL-compatible buses
• Signal decoding and encoding in communication equipment

Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or certified suppliers. Confirm the specific suffix indicates the commercial temperature grade and PDIP package. Check for lifetime buy status as production data may indicate discontinuation phases. Ensure programming equipment compatibility with titanium-tungsten fuse structures before acquisition.

Selection Notes

Select this variant when registered outputs are required for synchronous design applications. Compare against the TIBPAL16L8 series if combinational logic only is sufficient, or the TIBPAL16R4/R6 variants for fewer output requirements. Consider the -30M suffix for military temperature ranges (-55°C to 125°C) if environmental conditions exceed commercial limits. Validate pinout compatibility with existing PCB footprints.

Part Context

This component belongs to the TIBPAL16 family of IMPACT PAL circuits, designed as high-performance substitutes for conventional TTL logic. The family includes L (combinational), R4, R6, and R8 (registered) variations. These devices utilize proven titanium-tungsten fuse technology to provide reliable, compact solutions for custom logic designs, maintaining functional equivalence with earlier AMD PAL generations while offering superior speed and lower power consumption.

Replacement Considerations

Publicly confirmed direct functional equivalents include the PAL16R8A. For military temperature specifications, the TIBPAL16R8-30MJ serves as a verified alternative. Verify that any substitute maintains the same 20-pin DIP footprint and compatible fuse-based programming architecture to ensure seamless integration without board redesign.