What the 8-macrocell count means for your logic glue
The GAL16V8D-15LPI is an electrically erasable PLD from Lattice's GAL®16V8 series, packing 8 macrocells in a 20-pin DIP package. Eight macrocells cover typical address decoding, bus arbitration, or state-machine logic that would otherwise consume a handful of 74-series logic packages — one GAL replaces several SOIC-14s and cuts the board footprint. The EE PLD architecture means the device is in-system reprogrammable; the same socket can serve prototype iterations and production units without a UV eraser cycle.
Lattice Semiconductor has marked the GAL16V8D-15LPI as obsolete. For existing BOM lines or legacy board repairs, the part is sourced through independent distribution against an RFQ.
Package and board-fit — through-hole DIP for legacy or prototyping
The 20-DIP (0.300", 7.62mm) through-hole package mates with standard 0.100-inch pitch sockets or wave-solder pads. The 20-PDIP footprint is common across the GAL16V8 family, so a board laid out for one speed grade accepts the -15LPI variant without a layout change. Supplied in tube packaging — 15 or 25 per tube depending on the factory fill — suitable for manual insertion or tube-fed auto-insertion machines.