TIBPAL16R8-15CN

Overview

The TIBPAL16R8-15CN is a high-performance Impact PAL circuit featuring eight dedicated inputs and eight registered outputs. It utilizes Advanced Low-Power Schottky technology with titanium-tungsten fuses for reliable programmability. The device operates within a supply voltage range of 4.75 V to 5.25 V, supporting a maximum clock frequency of 50 MHz. Propagation delays are specified at a maximum of 15 ns from input to output and 12 ns from clock to registered output.

Feature Summary

• Registered outputs provide power-up clear functionality, setting all registers high upon initialization.
• Combines high-speed logic performance with compact board space requirements through easy programmability.
• Functionally equivalent to older PAL series devices while offering improved speed characteristics.

Applications

• State machine implementation requiring specific initialization states.
• High-speed decoding logic in industrial control systems.
• Replacement for legacy TTL logic in existing designs.
• Custom function generation in embedded hardware architectures.

Procurement Notes

Verify the specific package variant, as the 'CN' suffix typically denotes a plastic DIP package. Confirm that the component meets the required temperature range of 0°C to 75°C for commercial applications. Check current production status, as older PAL devices may be classified as obsolete or not recommended for new designs depending on the manufacturing date and specific sub-version.

Selection Notes

Select this device when registered outputs are necessary for synchronous design flows. Ensure the design accommodates the preload procedure for initializing register states before normal operation. Verify that the 5V supply voltage and current consumption parameters align with the system's power budget and thermal constraints.

Part Context

This component belongs to the Texas Instruments TIBPAL16 family of Impact PAL circuits. It serves as a direct upgrade path for earlier PAL16R8A devices, providing faster switching speeds while maintaining pin compatibility. The family includes variations with different output configurations and speed grades to suit diverse logic density and timing requirements.

Replacement Considerations

The PAL16R8A is a functionally equivalent predecessor but operates at slower speeds. When substituting, ensure the new design accounts for the faster propagation delays and verify that the power-up reset behavior matches the system's initialization requirements without causing unintended state transitions.