15 ns — the speed grade that decides the fit
The GAL22V10D-15LJNI is a 15 ns EE PLD from Lattice's GAL®22V10 family, packing 10 macrocells in a 28-PLCC package. That 15 ns propagation delay sets the ceiling for registered logic — if your state machine needs to toggle at 66 MHz or faster, this part won't hold the timing; below that, it's a solid drop-in for glue logic or address decoding on a 5V bus.
Industrial temp, 5V rail, J-Lead footprint
The 4.5V to 5.5V internal supply matches legacy 5V logic families; dropping it into a 3.3V-only board requires a level translator on every I/O. The 28-PLCC (J-Lead) footprint — 11.51 mm square — mates with a standard PLCC socket or can be soldered directly. The J-bend gives a smaller footprint than a DIP but still allows visual inspection of the solder joints, which helps on a repair bench where you're tracing a dead address line.
Obsolete — what that means for your BOM
Lattice has marked the GAL22V10D-15LJNI as obsolete. A replacement through independent distribution is the practical path; no board spin required as long as you source the exact package and speed grade.