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| PartNumber | DS1344D-3+T\u0026R | DS1344D-33+ | DS1344D-3+ |
| Description | Real Time Clock Low-Current SPI/3-Wire RTC | Real Time Clock Low-Current SPI/3-Wire RTC | Real Time Clock Low-Current SPI/3-Wire RTC |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Real Time Clock | Real Time Clock | Clock/Timing - Real Time Clocks |
| RoHS | Y | Y | - |
| Packaging | Reel | Tube | Tube Alternate Packaging |
| Product | Real Time Clocks | - | - |
| Series | DS1344D | DS1344D | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Product Type | Real Time Clock | Real Time Clocks | - |
| Factory Pack Quantity | 2500 | 100 | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Part # Aliases | 90-1344D+3TR DS1344D | 90-1344D+033 DS1344D | - |
| Mounting Style | - | SMD/SMT | - |
| Package / Case | - | TDFN-14 | - |
| RTC Bus Interface | - | Serial, 3-Wire, SPI | - |
| Date Format | - | DW:DM:M:Y | YY-MM-DD-dd |
| Time Format | - | HH:MM:SS | HH:MM:SS (12/24 hr) |
| Battery Backup Switching | - | Backup Switching | - |
| RTC Memory Size | - | 96 B | - |
| Supply Voltage Max | - | 5.5 V | - |
| Supply Voltage Min | - | 3 V | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Function | - | Alarm, Calendar, Clock | - |
| Operating Supply Current | - | 250 nA | - |
| Unit Weight | - | 0.001764 oz | - |
| Type | - | - | Clock/Calendar |
| Package Case | - | - | 14-WFDFN Exposed Pad |
| Operating Temperature | - | - | -40°C ~ 85°C |
| Mounting Type | - | - | Surface Mount |
| Features | - | - | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger |
| Interface | - | - | SPI |
| Voltage Supply | - | - | 2.7 V ~ 5.5 V |
| Supplier Device Package | - | - | 14-TDFN-EP (3x3) |
| Memory Size | - | - | 96B |
| Voltage Supply Battery | - | - | 1.3 V ~ 5.5 V |
| Current Timekeeping Max | - | - | - |