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| Part Number | DS1221S | DS1321S | DS1222S | DS1221SN | DS1211S | DS1221 |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Controller Type | Nonvolatile RAM | Nonvolatile RAM | Static RAM (SRAM) | Nonvolatile RAM | Nonvolatile RAM | Nonvolatile RAM |
| Voltage - Supply | 4.5V ~ 5.5V | 4.75V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.75V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 20-SOIC | 16-PDIP |
