TIBPAL16R4-10CFN

Overview

The TIBPAL16R4-10CFN is a high-performance IMPACT-X PAL programmable logic device from Texas Instruments, characterized for operation between 0°C and 75°C. It features 8 dedicated inputs, 4 registered outputs with 3-state buffers, and 4 I/O ports within a 20-pin plastic chip carrier (FN package). The device utilizes Advanced Low-Power Schottky technology with titanium-tungsten fuses. Key electrical parameters include a maximum propagation delay of 10 ns for combinational paths and 8 ns for clock-to-register transitions. Maximum operating frequencies are 62.5 MHz without feedback and 55.5 MHz with feedback.

Feature Summary

• High-speed performance with 10 ns max propagation delay and up to 62.5 MHz clock frequency
• Registered architecture with preload capability for simplified testing and power-up clear
• Security fuse implementation prevents logical duplication of the programmed design
• Compatible with standard TTL logic levels using Advanced Low-Power Schottky technology

Applications

• State machine implementations requiring synchronous output control
• System interface logic replacing discrete TTL components
• Data path buffering and synchronization in digital systems
• Custom combinatorial logic functions in compact board designs

Procurement Notes

Verify component authenticity through authorized distributors or TI direct channels. Confirm package integrity as the FN suffix denotes a specific plastic chip carrier format. Check for RoHS compliance status relative to manufacturing date codes, as legacy PLDs may have varying environmental certifications. Ensure programming equipment supports the titanium-tungsten fuse architecture specified in the datasheet.

Selection Notes

Select this variant when registered outputs with 3-state control are required alongside I/O flexibility. The 10C speed grade suits applications needing 10 ns delays within commercial temperature ranges. Compare against TIBPAL16L8 variants if registered outputs are unnecessary, or TIBPAL16R6/R8 if higher output counts are needed. Verify voltage compatibility with existing 5V system rails.

Part Context

This component belongs to the TIBPAL16 family of IMPACT-X PAL circuits, which serve as functional equivalents to earlier PAL devices but offer improved speed and reliability. The R4 designation specifically indicates a configuration optimized for four registered outputs, distinguishing it from the L8 (combinatorial) and R6/R8 (higher register count) members of the series.

Replacement Considerations

Direct pin-compatible replacements within the same family include TIBPAL16R6-10CFN and TIBPAL16R8-10CFN, provided the additional registered outputs do not conflict with the design. For non-registered needs, TIBPAL16L8-10CFN offers identical input/output port configurations without flip-flops.