12 ns speed — timing margin in the bus cycle
12 ns pin-to-pin delay. 4 macrocells configurable as registered or combinatorial.
Hermetic 28-CLCC — package and environment
28-CLCC ceramic package, 11.43 mm × 11.43 mm. Bulk packaging.

PAL20R4-12/B3A, Programmable Array Logic, 12 ns speed, 4 macrocells, 4.5V~5.5V supply, 28-CLCC (11.43x11.43 mm), Surface Mount, Bulk package.
| Parameter | Value |
|---|---|
| Mounting type | Surface Mount |
| Programmable type | PAL |
| Voltage - input | 4.5V ~ 5.5V |
| Speed | 12 ns |
| Package | Bulk |
| Case | 28-CLCC |
| Number of macrocells | 4 |
12 ns pin-to-pin delay. 4 macrocells configurable as registered or combinatorial.
28-CLCC ceramic package, 11.43 mm × 11.43 mm. Bulk packaging.
No, the PAL20R4-12/B3A is listed as Active in production status. It is still in current manufacture and available to order.
The datasheet covers the PAL20R4 family specifications including the 12 ns speed grade, 4 macrocells, 5 V supply range, and 28-CLCC package details. It is available from the manufacturer or through component database searches.
The listed propagation delay is 12 ns, which is the pin-to-pin delay through the array and registered output.