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| PartNumber | DS1340Z-18+ | DS1340Z-18 | DS1340Z-1.8 |
| Description | Real Time Clock I2C RTC w/Trickle Charger | Real Time Clock I2C RTC w/Trickle Charger | |
| Manufacturer | Maxim Integrated | Maxim Integrated | - |
| Product Category | Real Time Clock | Real Time Clock | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOIC-8 | SOIC-8 | - |
| RTC Bus Interface | Serial, I2C | Serial | - |
| Date Format | DW:DM:M:Y | - | - |
| Time Format | HH:MM:SS | HH:MM:SS | - |
| Battery Backup Switching | Backup Switching | Backup Switching | - |
| Supply Voltage Max | 1.89 V | 1.89 V | - |
| Supply Voltage Min | 1.71 V | 1.71 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tube | Tube | - |
| Function | Calendar, Clock, Trickle Charger | Calendar, Clock, Trickle Charger | - |
| Product | Real Time Clocks | - | - |
| Series | DS1340Z | DS1340Z | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Product Type | Real Time Clock | Real Time Clocks | - |
| Factory Pack Quantity | 100 | 100 | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Part # Aliases | 90-1340Z+018 DS1340Z | DS1340Z | - |
| Unit Weight | 0.019048 oz | 0.019048 oz | - |