Glue-logic replacement in a hermetic ceramic package
The 5962-87539043A is a PAL-type UV PLD with 10 macrocells and a 20 ns propagation delay — fast enough to replace multiple 74-series SSI/MSI packages in address decoding, state-machine sequencing, or bus-interface logic on a single 5V rail (4.5V to 5.5V input range). The 28-CLCC hermetic ceramic package (13.97x8.89 mm body) carries the MIL-STD-883 reliability pedigree — the windowed lid allows UV-erase for reprogramming during development, while the sealed ceramic cavity protects the die in high-vibration or moisture-sensitive environments.
20 ns speed — timing closure in the decode path
The 20 ns propagation delay sets the combinatorial logic ceiling — a 50 MHz address bus requires the PAL output to settle within one clock period, so the 20 ns figure leaves 10 ns of margin after setup time for the downstream register. With 10 macrocells, each configurable as registered or combinatorial output, the device absorbs up to 10 sum-of-product terms — enough for a 3-to-8 decoder with enable, a 4-bit counter, or a simple state machine without external OR-AND arrays.