TIBPAL16R4-15MJB

Overview

The TIBPAL16R4-15MJB is a high-performance Impact PAL circuit manufactured by Texas Instruments, characterized for operation over the full military temperature range of −55°C to 125°C. It features Advanced Low-Power Schottky technology with titanium-tungsten fuses. The device provides 8 dedicated inputs, 4 registered outputs (Q), and 4 I/O ports equipped with 3-state buffers. Maximum propagation delay is 15 ns, with a maximum clock frequency of 50 MHz. It operates at a nominal supply voltage of 5 V and utilizes a 20-pin Ceramic Dual In-Line Package (CDIP).

Feature Summary

• Military-grade reliability with an operating temperature range of −55°C to 125°C.
• High-speed performance with a maximum propagation delay of 15 ns and clock frequency up to 50 MHz.
• Registered architecture featuring 4 D-type flip-flops with power-up clear functionality.
• Integrated 3-state output buffers on all I/O ports for bus-compatible designs.

Applications

• Military avionics systems requiring radiation-hardened or high-reliability logic.
• Spacecraft control units operating in extreme thermal environments.
• Defense communication equipment utilizing TTL-compatible interfaces.
• Industrial automation controllers designed for harsh operational conditions.

Procurement Notes

Verify the specific date code prior to ordering, as programming algorithms differ based on manufacturing batches. Devices with date codes prior to 9616A require programming specifications corresponding to the TIBPAL16R4-12C, while those dated 9616A or newer must use specifications for the TIBPAL16R4-10C. Confirm package integrity upon receipt, as ceramic packages are susceptible to mechanical damage during handling.

Selection Notes

Select this component when a registered PAL solution with 3-state outputs is required for military applications. Ensure the design accommodates the 20-pin CDIP footprint. Verify that the target system supports the 5V logic levels and current drive capabilities specified in the electrical characteristics. Consider the programming constraints related to date codes if field reprogramming is anticipated.

Part Context

This part belongs to the TIBPAL16 series of Impact PAL circuits, which includes variants such as the TIBPAL16L8, TIBPAL16R6, and TIBPAL16R8. These devices serve as high-performance substitutes for conventional TTL logic using titanium-tungsten fuse technology. The 'JB' suffix specifically denotes the 20-pin Ceramic Dual In-Line Package (CDIP) variant within the -15 speed grade family.

Replacement Considerations

Public confirmed substitute part numbers include 5962-8515512RA. When replacing older date code versions, ensure the programmer software is updated to match the specific algorithm requirements (TIBPAL16R4-12C vs. TIBPAL16R4-10C) to prevent device damage.