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| PartNumber | N25S818HAT21I | N25S818HAS21I | N25S818HAT21IT |
| Description | SRAM 256KB 1.8V SERIAL SRAM | SRAM 256KB 1.8V SERIAL SRAM | SRAM GENERAL SALES (ULP) |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | SRAM | SRAM | SRAM |
| RoHS | Y | Y | Y |
| Memory Size | 256 kbit | 256 kbit | - |
| Organization | 32 k x 8 | 32 k x 8 | - |
| Access Time | 32 ns | 32 ns | - |
| Maximum Clock Frequency | 16 MHz | 16 MHz | - |
| Interface Type | Serial | Parallel | - |
| Supply Voltage Max | 1.95 V | 1.95 V | - |
| Supply Voltage Min | 1.7 V | 1.7 V | - |
| Supply Current Max | 3 mA | 3 mA | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TSSOP-8 | SOIC-8 | - |
| Packaging | Tube | Tube | Reel |
| Data Rate | SDR | SDR | - |
| Series | N25S818HA | N25S818HA | - |
| Type | Synchronous | Synchronous | - |
| Brand | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Number of Ports | 1 | 1 | - |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | SRAM | SRAM | SRAM |
| Factory Pack Quantity | 100 | 96 | 3000 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Unit Weight | 0.005573 oz | 0.019048 oz | - |