 |  | | |
| PartNumber | DS1340U-33+ | DS1340U-3+ | DS1340U-18+ |
| Description | Real Time Clock I2C RTC w/Trickle Charger | Real Time Clock I2C RTC w/Trickle Charger | Real Time Clock I2C RTC w/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 | USOP-8 | uSOP-8 | uSOP-8 |
| RTC Bus Interface | Serial, I2C | Serial | Serial |
| Date Format | YY-MM-DD | - | - |
| Time Format | HH:MM:SS | HH:MM:SS | HH:MM:SS |
| 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 | Calendar, Clock, Trickle Charger | Calendar, Clock, Trickle Charger | Calendar, Clock, Trickle Charger |
| Product | Real Time Clocks | Real Time Clocks | Real Time Clocks |
| Series | DS1340U | DS1340U | DS1340U |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Operating Supply Current | 192 uA | - | - |
| 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 | 90-1340U+033 DS1340U | 90-1340U+003 DS1340U | 90-1340U+018 DS1340U |
| Unit Weight | 0.000811 oz | - | 0.000832 oz |