| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| DS1642-100 | Nonvolatile Timekeeping RAM | Dallas-Semiconductor | - | 24 | 0°C | 70°C | 138 K |
| DS1642-70 | Nonvolatile Timekeeping RAM | Dallas-Semiconductor | - | 24 | 0°C | 70°C | 138 K |
| DS1643-120 | Nonvolatile timekeeping RAM, 120ns access | Dallas-Semiconductor | DIP | 28 | 0°C | 70°C | 81 K |
| DS1643-150 | Nonvolatile timekeeping RAM, 150ns access | Dallas-Semiconductor | DIP | 28 | 0°C | 70°C | 81 K |
| DS1644-120 | 32K x 8 nonvolatile timekeeping static RAM, 120ns access | Dallas-Semiconductor | LPM | 34 | 0°C | 70°C | 108 K |
| DS1644-150 | 32K x 8 nonvolatile timekeeping static RAM, 150ns access | Dallas-Semiconductor | LPM | 34 | 0°C | 70°C | 108 K |
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