TIBPAL16R4-10MJB

Overview

The TIBPAL16R4-10MJB is a high-performance Impact PAL circuit manufactured by Texas Instruments. It belongs to the military-grade TIBPAL series, designed for operation across an extended temperature range of -55°C to +125°C. The device features a 20-pin Ceramic Dual In-Line Package (CDIP). Key electrical specifications include a maximum clock frequency of 40 MHz and a propagation delay of 10 ns. It provides 12 input lines and 8 registered output lines, with 8 dedicated inputs.

Feature Summary

• Military-grade reliability with an operating temperature range of -55°C to +125°C
• High-speed performance with a 10 ns propagation delay and 40 MHz max clock frequency
• 20-pin CDIP package suitable for high-reliability applications
• 12 inputs and 8 registered outputs within the PAL architecture

Applications

• Military avionics systems requiring radiation-hardened or high-reliability logic
• Spacecraft control circuits operating in extreme thermal environments
• Defense communication equipment interface logic
• Industrial control systems demanding wide temperature stability

Procurement Notes

Verify the authenticity of the ceramic dual in-line package (CDIP) housing, as counterfeits may use plastic substitutes. Confirm the suffix 'MJB' corresponds to the specific military qualification and lead frame material. Check for date codes prior to obsolescence notices. Ensure storage conditions prevent moisture ingress in the ceramic seal. Validate that the 10 ns speed grade matches the system timing requirements exactly.

Selection Notes

Select this component when military temperature ratings (-55°C to +125°C) are mandatory. Choose the 10 ns variant if system timing requires faster switching than the 15 ns or 20 ns alternatives. The registered output configuration (R4) is necessary for synchronous design architectures. Compare pinout compatibility with existing PCB footprints before substitution. Verify power supply voltage tolerance against the standard 5V logic requirement.

Part Context

This part is part of the Texas Instruments Impact PAL family, specifically the TIBPAL line designated for military and aerospace applications. It shares architectural similarities with commercial variants like the PAL16R4 but differs in packaging and environmental testing standards. The 'MJB' suffix indicates a specific military lot traceability and qualification level distinct from commercial or industrial grades.

Replacement Considerations

Direct replacements include other TIBPAL16R4 variants with different speed grades (e.g., TIBPAL16R4-15MJB, TIBPAL16R4-20MJB) if timing margins allow. Commercial equivalents like the PAL16R4-10JC lack the required military temperature range and ceramic packaging. Cross-reference pinouts carefully as some legacy PALs have minor pin function variations.