| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-90L1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-90L1TR datasheet (113K) |
| M27C4001-90L1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-90L1X datasheet (113K) |
| M27C4001-90L6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-90L6TR datasheet (113K) |
| M27C4001-90L6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-90L6X datasheet (113K) |
| M27C4001-90N1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-90N1TR datasheet (113K) |
| M27C4001-90N1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-90N1X datasheet (113K) |
| M27C4001-90N6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-90N6TR datasheet (113K) |
| M27C4001-90N6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-90N6X datasheet (113K) |
| M27C4001-90XB1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | PDIP | 32 | 0°C | 70°C | M27C4001-90XB1X datasheet (113K) |
| M27C4001-90XB6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS-Thomson Microelectronics | PDIP | 32 | -40°C | 85°C | M27C4001-90XB6X datasheet (113K) |
