| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-80L1X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-80L1X datasheet (113K) |
| M27C4001-80L6TR | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-80L6TR datasheet (113K) |
| M27C4001-80L6X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-80L6X datasheet (113K) |
| M27C4001-80N1TR | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-80N1TR datasheet (113K) |
| M27C4001-80N1X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-80N1X datasheet (113K) |
| M27C4001-80N6TR | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-80N6TR datasheet (113K) |
| M27C4001-80N6X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-80N6X datasheet (113K) |
| M27C4001-80XB1X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | PDIP | 32 | 0°C | 70°C | M27C4001-80XB1X datasheet (113K) |
| M27C4001-80XB6X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | PDIP | 32 | -40°C | 85°C | M27C4001-80XB6X datasheet (113K) |
| M27C4001-80XC1X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS-Thomson Microelectronics | PLCC | 32 | 0°C | 70°C | M27C4001-80XC1X datasheet (113K) |
