 | |  | |
| PartNumber | DS1390U-33+ | DS1390U-3+ | DS1390U-18+ |
| Description | Real Time Clock Low-V SPI/3-Wire With Trickle Charger | Real Time Clock Low-V SPI/3-Wire With Trickle Charger | Real Time Clock Low-V SPI/3-Wire With Trickle Charger |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Real Time Clock | Real Time Clock | Real Time Clock |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | MSOP-10 | MSOP-10 | uSOP-10 |
| RTC Bus Interface | Serial, 3-Wire, SPI | Serial, SPI | Serial |
| Date Format | DW:DM:M:Y | YY-MM-DD | - |
| Time Format | HH:MM:SS:hh | HH:MM:SS:hh | HH:MM:SS:hh |
| Battery Backup Switching | Backup Switching | Backup Switching | Backup Switching |
| Supply Voltage Max | 5.5 V | 3.3 V | 1.89 V |
| Supply Voltage Min | 2.97 V | 2.7 V | 1.71 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tube | Tube | Tube |
| Function | Alarm, Calendar, Clock, Trickle Charger | Alarm, Calendar, Clock, Trickle Charger | Alarm, Calendar, Clock, Trickle Charger |
| Product | Real Time Clocks | Real Time Clocks | Real Time Clocks |
| Series | DS1390U | DS1390U | DS1390U |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Operating Supply Current | 2 mA | 2 mA | - |
| Product Type | Real Time Clock | Real Time Clock | Real Time Clock |
| Factory Pack Quantity | 50 | 50 | 50 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Part # Aliases | 90-1390U+033 DS1390U | 90-1390U+003 DS1390U | 90-1390U+018 DS1390U |
| Unit Weight | 0.005051 oz | 0.005051 oz | - |