What the 10 ns tpd means for timing closure
The GAL16V8D-10LJNI: That 10 ns tpd sets the combinational-logic speed ceiling: any path through the device — from input through the AND/OR array to registered output — must complete within 10 ns. For a 50 MHz clock, that leaves 10 ns for logic plus setup; if your state machine needs more than one level of gating between registers, the 10 ns window tightens fast.
Lattice has marked the GAL16V8D-10LJNI as Obsolete. For existing BOM lines that still call out this order code, the supply route is independent surplus and excess inventory — lot-specific, traceable, and confirmed at RFQ. No last-time-buy window remains open.
Housed in a 20-lead PLCC (J-Lead) package — supplier device package 20-PLCC (9x9 mm). Surface-mount, with the J-leads forming a gull-wing-like footprint that mates to a standard PLCC-20 land pattern.