| PartNumber | IDT71256SA20Y | IDT71256SA20TPI | IDT71256SA20Y8 |
| Description | IC SRAM 256K PARALLEL 28SOJ | IC SRAM 256K PARALLEL 28DIP | |
| Manufacturer | IDT, Integrated Device Technology Inc | - | IDT, Integrated Device Technology Inc |
| Product Category | Memory | - | Memory |
| Series | - | - | - |
| Packaging | Tube | - | Tape & Reel (TR) |
| Package Case | 28-BSOJ (.300", 7.62mm Width) | - | 28-BSOJ (.300", 7.62mm Width) |
| Operating Temperature | 0°C ~ 70°C (TA) | - | 0°C ~ 70°C (TA) |
| Interface | Parallel | - | Parallel |
| Voltage Supply | 4.5 V ~ 5.5 V | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | 28-SOJ | - | 28-SOJ |
| Memory Size | 256K (32K x 8) | - | 256K (32K x 8) |
| Memory Type | SRAM - Asynchronous | - | SRAM - Asynchronous |
| Speed | 20ns | - | 20ns |
| Format Memory | RAM | - | RAM |