TIBPAL20R6-7CFN

Overview

The TIBPAL20R6-7CFN is a high-performance IMPACT-X PAL-type programmable logic device manufactured by Texas Instruments. It features 12 inputs and 6 registered outputs with 3-state buffers, plus 2 I/O ports, housed in a 28-pin PLCC package. The device utilizes Advanced Low-Power Schottky technology for reliable operation. Key electrical parameters include a maximum clock frequency of 100 MHz without feedback and a typical propagation delay of 5.5 ns from CLK to Q. It operates on a nominal 5 V supply within an industrial temperature range of 0 °C to 75 °C.

Feature Summary

• High-speed performance with fmax up to 100 MHz and tpd max 7 ns
• Registered outputs with preload capability for simplified testing
• Power-up clear feature sets all registers to low level initially
• Security fuse prevents circuit duplication

Applications

• Counter designs using internal feedback configurations
• State-machine implementations requiring external feedback
• Custom logic functions replacing conventional TTL circuits

Procurement Notes

Verify the specific ordering suffix 'FN' corresponds to the 28-pin PLCC package as listed in the packaging data. Confirm RoHS compliance status, noting that while some variants are Pb-Free, this specific obsolete part number requires checking current eco-plan details. Ensure programming equipment supports the titanium-tungsten fuse architecture described in the datasheet.

Selection Notes

Select this model when 12 inputs and 6 registered outputs are required. Compare against TIBPAL20R4-7CFN if only 4 outputs are needed, or TIBPAL20R8-7CFN for 8 outputs. The '-7C' suffix indicates the 0°C to 75°C operating range; use the '-10M' series for military temperature ranges (-55°C to 125°C). Verify pin compatibility if substituting into existing 24-pin DIP footprints, as this is a 28-pin PLCC.

Part Context

This component belongs to the TIBPAL20 family of IMPACT-X PAL circuits. It is functionally equivalent but faster than earlier 24-pin PLD circuits. The family includes combinatorial (L8) and registered (R4, R6, R8) variants. The TIBPAL20R6-7CFN is specifically the registered version with 6 outputs in a plastic leaded chip carrier package.

Replacement Considerations

The datasheet lists TIBPAL20R6-7CFN as Active. Direct replacements within the same family include TIBPAL20R4-7CFN (4 outputs) and TIBPAL20R8-7CFN (8 outputs). For military temperature requirements, consider the TIBPAL20R6-10MFKB variant.