| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | PAL20R6VC |  448Kb/14P | Progammable Array Logic Series 24 (PAL Series 24) |
 National Semiconductor ... | PAL20R6VM |  448Kb/ 14P | Progammable Array Logic Series 24 (PAL Series 24) |
| PAL20R6-4JC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-4JM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-4NC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-4NM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-4VC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-4VM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-5JC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-5JM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-5NC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-5NM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-5VC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-5VM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-7JC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-7JM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-7NC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-7NM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-7VC |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6-7VM |  1Mb/ 18P | Programmable Array Logic 24-Pin Medium PAL Series -7,-5,and -4 |
| PAL20R6A |  448Kb/ 14P | Progammable Array Logic Series 24 (PAL Series 24) |