| PartNumber | DS1392U-33+ | DS1392U-3+ | DS1392U-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 Charge |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Real Time Clock | Real Time Clock | IC Chips |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | MSOP-10 | uSOP-10 | - |
| RTC Bus Interface | Serial, 3-Wire | Serial | Serial |
| Date Format | YY-MM-DD | - | YY-MM-DD-dd |
| Time Format | HH:MM:SS:hh | HH:MM:SS:hh | HH:MM:SS:hh (12/24 hr) |
| Battery Backup Switching | Backup Switching | Backup Switching | Backup Switching |
| Supply Voltage Max | 5.5 V | 3.3 V | - |
| Supply Voltage Min | 2.97 V | 2.7 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 |
| Series | DS1392U | DS1392U | DS1392U |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Operating Supply Current | 2 mA | - | - |
| Product Type | Real Time Clock | Real Time Clocks | - |
| Factory Pack Quantity | 50 | 50 | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Part # Aliases | 90-1392U+033 DS1392U | 90-1392U+003 DS1392U | 90-1392U+018 DS1392U |
| Unit Weight | 0.005051 oz | - | - |
| Type | - | - | Clock/Calendar |
| Package Case | - | - | uSOP-10 |
| Operating Temperature | - | - | -40°C ~ 85°C |
| Mounting Type | - | - | Surface Mount |
| Features | - | - | Alarm, Leap Year, Square Wave Output, Trickle-Charger |
| Interface | - | - | 3-Wire Serial |
| Voltage Supply | - | - | 1.71 V ~ 1.89 V |
| Supplier Device Package | - | - | 10-uMAX |
| Memory Size | - | - | - |
| Voltage Supply Battery | - | - | 1.3 V ~ 3.7 V |
| Current Timekeeping Max | - | - | 100μA @ 1.71V ~ 1.89V |
| Supply Voltage Max | - | - | 1.89 V |
| Supply Voltage Min | - | - | 1.71 V |