TIBPAL16R4-15CFN

Overview

The TIBPAL16R4-15CFN is a high-performance IMPACT PAL programmable logic device manufactured by Texas Instruments. It features 8 dedicated inputs, 4 registered outputs with 3-state buffers, and 2 I/O lines. The device utilizes Advanced Low-Power Schottky technology with titanium-tungsten fuses for reliable operation. It operates within a commercial temperature range of 0°C to 75°C and supports a maximum clock frequency of 50 MHz. Key electrical parameters include a maximum propagation delay of 15 ns from input to output and 12 ns from clock to registered output.

Feature Summary

• High-speed performance with 15 ns max propagation delay (C suffix)
• Registered outputs feature power-up clear, setting all registers high upon initialization
• Functional equivalent to faster PAL16R4A devices using proven PAL architecture
• Supports preload procedure for individual register testing without full state-machine sequencing

Applications

• Custom logic function implementation replacing conventional TTL logic
• State machine design utilizing registered outputs and power-up reset capabilities
• System interface logic requiring fast switching speeds and compact board space

Procurement Notes

This component is listed as obsolete in the Texas Instruments Package Option Addendum. Verification of availability should focus on lifetime buy periods or secondary market sources. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement, as production processing does not necessarily include testing of all parameters.

Selection Notes

Select this device when a 15 ns speed grade is required for registered logic applications within the 0°C to 75°C commercial temperature range. The 'FN' suffix indicates a PLCC package. Ensure designs account for the specific preload sequence requirements and verify that the 8-input, 4-registered-output configuration matches the target logic density needs compared to unregistered variants.

Part Context

The TIBPAL16R4-15CFN belongs to the IMPACT PAL family, which combines advanced LPS technology with titanium-tungsten fuses. This series serves as a high-performance substitute for earlier PAL16L8A, PAL16R4A, PAL16R6A, and PAL16R8A devices. The 'C' suffix denotes the commercial temperature characterization, while the 'FN' suffix specifies the plastic leaded chip carrier package option.

Replacement Considerations

Public confirmed substitutes are not available due to the obsolete status of the device. Designers may consider functional equivalents from other manufacturers or newer Texas Instruments programmable logic families, though direct pin-compatible replacements are not documented in the provided datasheet.