| PartNumber | DS1646-120+ | DS1646P-120+ | DS1646P-120 |
| Description | Real Time Clock NV Timekeeping RAM | Real Time Clock NV Timekeeping RAM | IC RAM TIMEKEEP NV 120NS 34-PCM |
| Manufacturer | Maxim Integrated | Maxim Integrated | - |
| Product Category | Real Time Clock | Real Time Clock | - |
| RoHS | Y | Y | - |
| Mounting Style | Through Hole | SMD/SMT | - |
| Package / Case | eDIP-32 | PowerCap-34 | - |
| RTC Bus Interface | Parallel | Parallel | - |
| Time Format | HH:MM:SS | HH:MM:SS | - |
| RTC Memory Size | 131072 B | 131072 B | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Packaging | Tube | Tube | - |
| Function | Calendar, Clock, NV Timekeeping RAM | Calendar, Clock, NV Timekeeping RAM | - |
| Series | DS1646 | DS1646P | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Product Type | Real Time Clocks | Real Time Clocks | - |
| Factory Pack Quantity | 11 | 40 | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Part # Aliases | 90-16460+120 DS1646 | 90-1646P+120 DS1646P | - |
| Moisture Sensitive | - | Yes | - |