| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | PAL20C4VC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
 National Semiconductor ... | PAL20C4VM |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4A |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AJ |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AJC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AJM |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AM |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AN |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4ANC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4ANM |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AV |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AVC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4AVM |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4C |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4J |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4JC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4JM |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4M |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20C4N |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |