PAL16R4ANC – LATTICE SEMI

The PAL16R4ANC, manufactured by Lattice Semiconductor (originally Monolithic Memories, indicated by the “8156” reference), is a Programmable Array Logic (PAL) device configured with 16 inputs and 4 registered outputs. This specific variant, the 16R4, denotes a registered output architecture, incorporating D-type flip-flops at the outputs. The “ANC” suffix likely indicates a specific speed grade and temperature range, though without further datasheet information, these parameters cannot be definitively specified. The device implements a programmable AND array feeding a fixed OR array, allowing for the implementation of custom logic functions. Programming is typically achieved via a PAL programmer, blowing fuses to define the desired logic. The device operates within a specified voltage range, typically 5V, and exhibits propagation delays characteristic of PAL devices of its era.