| PartNumber | DS1393U-33+ | DS1393U-3+ | DS1393U-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 | Clock/Timing - Real Time Clocks |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | uSOP | uSOP-10 | - |
| RTC Bus Interface | Serial | Serial | 3-Wire |
| 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 Alternate Packaging |
| 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 | DS1393U | DS1393U | DS1393U |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Product Type | Real Time Clock | Real Time Clock | - |
| Factory Pack Quantity | 50 | 50 | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Part # Aliases | 90-1393U+033 DS1393U | 90-1393U+003 DS1393U | 90-1393U+018 DS1393U |
| Type | - | - | Clock/Calendar |
| Unit Weight | - | - | 0.005051 oz |
| Package Case | - | - | MSOP-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 | - | - | - |
| Date Format | - | - | YY-MM-DD-dd |
| 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 |