Lattice Semiconductor has marked the GAL22V10D-15QP as Obsolete. This means the manufacturer no longer produces the device, and no official last-time-buy window remains open. Sourcing now runs through independent distribution and surplus channels.
10 macrocells, 15 ns — the speed-density tradeoff
The GAL22V10D-15QP packs 10 macrocells with a maximum propagation delay (tpd) of 15 ns. That 15 ns figure sets the ceiling on registered clock-to-output timing — for a 5 V system running at 33 MHz, the combinatorial path through the PLD must stay under that budget or the setup time at the downstream flip-flop is violated. The operating temperature span is 0 °C to 75 °C (TA) — commercial grade, so it fits indoor equipment but not an unheated enclosure in a northern winter.
24-PDIP — through-hole for legacy boards
The programmable type is EE PLD — electrically erasable, so the configuration is stored in on-chip EEPROM cells and retains the logic pattern through power cycles without a boot PROM.
Sourcing posture for the GAL22V10D-15QP
Because this part is obsolete, the only supply path is the independent market. We source it against an RFQ — the buyer provides the quantity, we confirm availability and current pricing at quote time. No lead-time number is published here because each lot is unique. A board redesign to a newer CPLD family (e.g., the ispGAL or ispMACH series) would require a PCB spin and a logic migration.