| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | DP8428 |  523Kb/26P | 1 Megabit High Speed Dynamic RAM Controller/Drivers |
| DP8428D-70 |  523Kb/26P | 1 Megabit High Speed Dynamic RAM Controller/Drivers |
| DP8428D-80 |  523Kb/26P | 1 Megabit High Speed Dynamic RAM Controller/Drivers |
| DP8428V-70 |  523Kb/26P | 1 Megabit High Speed Dynamic RAM Controller/Drivers |
| DP8428V-80 |  523Kb/26P | 1 Megabit High Speed Dynamic RAM Controller/Drivers |
 National Semiconductor ... | DP8420A |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8420AV-20 |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8420AV-25 |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8420V |  824Kb/60P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8420V-33 |  824Kb/60P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8421A |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8421AV-20 |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8421AV-25 |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8421V |  824Kb/60P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8421V-33 |  824Kb/60P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422A |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422AV-20 |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422AV-25 |  824Kb/58P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422V |  824Kb/60P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |
| DP8422V-33 |  824Kb/60P | microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers |