| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-45N6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-45N6TR datasheet (113K) |
| M27C4001-45N6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-45N6X datasheet (113K) |
| M27C4001-45XB6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PDIP | 32 | -40°C | 85°C | M27C4001-45XB6X datasheet (113K) |
| M27C4001-45XC1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PLCC | 32 | 0°C | 70°C | M27C4001-45XC1X datasheet (113K) |
| M27C4001-45XC6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PLCC | 32 | -40°C | 85°C | M27C4001-45XC6TR datasheet (113K) |
| M27C4001-45XF1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | FDIP | 32 | 0°C | 70°C | M27C4001-45XF1X datasheet (113K) |
| M27C4001-45XL1TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-45XL1TR datasheet (113K) |
| M27C4001-45XL1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-45XL1X datasheet (113K) |
| M27C4001-45XL6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-45XL6TR datasheet (113K) |
| M27C4001-45XL6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-45XL6X datasheet (113K) |
