| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | NMC27C128B |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQ15 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQ150 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQ20 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQ200 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQ25 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQ250 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQE150 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQE200 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQM150 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
| NMC27C128BQM200 |  366Kb/10P | High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM |
 National Semiconductor ... | NMC27C256 |  325Kb/9P | 262, 144-Bit (32k X 8) UV Erasable CMOS PROM |
| NMC27C256BN |  347Kb/11P | High Speed Version 262, 144-Bit(32k X 8) One-Time Programmable CMOS PROM |
| NMC27C256BN15 |  347Kb/11P | High Speed Version 262, 144-Bit(32k X 8) One-Time Programmable CMOS PROM |