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| PartNumber | BQ4845S-A4G4 | BQ4845S-A4 | BQ4845S-A4N |
| Description | Real Time Clock Watchdog Timer | Real Time Clock w/NVSRAM Control Watchdog Timer | Real Time Clock w/NVSRAM Control Watchdog Timer |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| 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 | SOIC-28 | SOIC-28 | SOIC-28 |
| RTC Bus Interface | Parallel | Parallel | Parallel |
| Time Format | HH:MM:SS | HH:MM:SS | HH:MM:SS |
| Battery Backup Switching | Backup Switching | Backup Switching | Backup Switching |
| RTC Memory Size | 16 B | 16 B | 16 B |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 4.75 V | 4.75 V | 4.75 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tube | Tube | Tube |
| Function | Alarm, Calendar, Clock, Timer Interrupt | Alarm, Calendar, Clock, Timer Interrupt | Alarm, Calendar, Clock, Timer Interrupt |
| Series | BQ4845 | BQ4845 | BQ4845 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Type | Real Time Clocks | Real Time Clocks | Real Time Clocks |
| Factory Pack Quantity | 20 | 20 | 20 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Unit Weight | 0.025778 oz | 0.025778 oz | 0.025778 oz |