| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-45C6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PLCC | 32 | -40°C | 85°C | M27C4001-45C6TR datasheet (113K) |
| M27C4001-45C6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PLCC | 32 | -40°C | 85°C | M27C4001-45C6X datasheet (113K) |
| M27C4001-45F1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | FDIP | 32 | 0°C | 70°C | M27C4001-45F1X datasheet (113K) |
| M27C4001-45F6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | FDIP | 32 | -40°C | 85°C | M27C4001-45F6X datasheet (113K) |
| M27C4001-45L1TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-45L1TR datasheet (113K) |
| M27C4001-45L1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-45L1X datasheet (113K) |
| M27C4001-45L6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-45L6TR datasheet (113K) |
| M27C4001-45L6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-45L6X datasheet (113K) |
| M27C4001-45N1TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-45N1TR datasheet (113K) |
| M27C4001-45N1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-45N1X datasheet (113K) |
