 | |  | |
| PartNumber | DS1251W-120IND+ | DS1251W-120+ | DS1251WP-120+ |
| Description | Real Time Clock 4096K NV SRAM w/Phantom Clock | Real Time Clock 4096K NV SRAM w/Phantom Clock | Real Time Clock 4096K NV SRAM w/Phantom Clock |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Real Time Clock | Real Time Clock | Real Time Clock |
| RoHS | Y | Y | Y |
| Mounting Style | Through Hole | Through Hole | SMD/SMT |
| Package / Case | EDIP-32 | EDIP-32 | PowerCap Module-34 |
| RTC Bus Interface | Parallel | Phantom Clock | Parallel |
| Date Format | DW:DM:M:Y | YY-MM-DD-dd | DW:DM:M:Y |
| Time Format | HH:MM:SS:hh | HH:MM:SS:hh | HH:MM:SS:hh |
| RTC Memory Size | 512 kB | 4096 kB | 512 kB |
| Supply Voltage Max | 3.63 V | 3.63 V | 3.63 V |
| Supply Voltage Min | 2.97 V | 2.97 V | 2.97 V |
| Minimum Operating Temperature | - 40 C | 0 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 70 C | + 70 C |
| Packaging | Tube | Tube | Tube |
| Function | Calendar, Clock, NV Timekeeping RAM | Alarm, Calendar, Clock | Calendar, Clock, NV Timekeeping RAM |
| Product | Real Time Clocks | Real Time Clocks | Real Time Clocks |
| Series | DS1251W | DS1251W | DS1251WP |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Type | Real Time Clock | Real Time Clock | Real Time Clock |
| Factory Pack Quantity | 10 | 11 | 40 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Part # Aliases | 90-1251W+12I DS1251W | 90-1251W+120 DS1251W | 90-1251W+P12 DS1251WP |
| Battery Backup Switching | - | Backup Switching | Backup Switching |
| Memory Type | - | NV RAM | - |
| Moisture Sensitive | - | - | Yes |
| Operating Supply Current | - | - | 85 mA |