| PartNumber | M87C257-90C1 | M87C257-90C1TR |
| Description | EPROM 256K (32Kx8) 90ns | EPROM 256K (32Kx8) 90ns |
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Product Category | EPROM | EPROM |
| RoHS | Y | N |
| Mounting Style | SMD/SMT | SMD/SMT |
| Package / Case | PLCC-32 | PLCC-32 |
| Type | OTP, UV | OTP, UV |
| Memory Size | 4 MB | 4 MB |
| Organization | 32 k x 8 | 32 k x 8 |
| Interface Type | Parallel | Parallel |
| Operating Supply Current | 50 mA | 30 mA |
| Programming Voltage | 12.75 V | 12.75 V |
| Supply Voltage Min | 4.5 V | 4.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C |
| Maximum Operating Temperature | + 70 C | + 70 C |
| Series | M87C257 | M87C257 |
| Packaging | Tube | Reel |
| Access Time | 90 ns | 90 ns |
| Brand | STMicroelectronics | STMicroelectronics |
| Operating Supply Voltage | 5 V | 5 V |
| Output Enable Access Time | 40 ns | 40 ns |
| Product Type | EPROM | EPROM |
| Factory Pack Quantity | 320 | 750 |
| Subcategory | Memory & Data Storage | Memory & Data Storage |