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| PartNumber | BQ3285ESS-N | BQ3285ESS-B5 | BQ3285ESS |
| Description | Real Time Clock, 1 Timer(s), CMOS, PDSO24 | Real Time Clock w/242x8 NVSRAM Alarm Wake-up | |
| Manufacturer | - | - | Texas Instruments |
| Product Category | - | - | Clock/Timing - Real Time Clocks |
| Series | - | - | - |
| Type | - | - | Clock/Calendar |
| Packaging | - | - | Tube Alternate Packaging |
| Package Case | - | - | 24-SSOP (0.154", 3.90mm Width) |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Mounting Type | - | - | Surface Mount |
| Features | - | - | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output |
| Interface | - | - | Parallel |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 24-SSOP/QSOP |
| Memory Size | - | - | 242B |
| Time Format | - | - | HH:MM:SS (12/24 hr) |
| Date Format | - | - | YY-MM-DD-dd |
| Voltage Supply Battery | - | - | 2.5 V ~ 4 V |
| Current Timekeeping Max | - | - | 300μA @ 5V |