| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-35XL1X | 4 Mbit (512Kb x 8) EPROM, 35ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-35XL1X datasheet (113K) |
| M27C4001-35XL6TR | 4 Mbit (512Kb x 8) EPROM, 35ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-35XL6TR datasheet (113K) |
| M27C4001-35XL6X | 4 Mbit (512Kb x 8) EPROM, 35ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-35XL6X datasheet (113K) |
| M27C4001-35XN1TR | 4 Mbit (512Kb x 8) EPROM, 35ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-35XN1TR datasheet (113K) |
| M27C4001-35XN6TR | 4 Mbit (512Kb x 8) EPROM, 35ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-35XN6TR datasheet (113K) |
| M27C4001-35XN6X | 4 Mbit (512Kb x 8) EPROM, 35ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-35XN6X datasheet (113K) |
| M27C4001-45B1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PDIP | 32 | 0°C | 70°C | M27C4001-45B1X datasheet (113K) |
| M27C4001-45B6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PDIP | 32 | -40°C | 85°C | M27C4001-45B6X datasheet (113K) |
| M27C4001-45C1TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PLCC | 32 | 0°C | 70°C | M27C4001-45C1TR datasheet (113K) |
| M27C4001-45C1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS-Thomson Microelectronics | PLCC | 32 | 0°C | 70°C | M27C4001-45C1X datasheet (113K) |
