| PartNumber | DS1221 | DS1221S | DS1221SN |
| Description | IC CTRLR/DECODER 4BIT 16-DIP | IC CTRLR/DECODER 4BIT 16-SOIC | IC CTRLR/DECODER 4BIT IN 16-SOIC |
| Manufacturer | - | Maxim Integrated | - |
| Product Category | - | Memory - Controllers | - |
| Series | - | - | - |
| Packaging | - | Tube | - |
| Package Case | - | 16-SOIC (0.295", 7.50mm Width) | - |
| Operating Temperature | - | 0°C ~ 70°C | - |
| Voltage Supply | - | 4.5 V ~ 5.5 V | - |
| Supplier Device Package | - | 16-SOIC | - |
| Controller Type | - | Nonvolatile RAM | - |