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| Part Number | BQ4845YS-A4 | BQ4845YS-A4N | BQ4845S-A4 | BQ4845YP-A4 |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer |
| Memory Size | - | - | - | - |
| Time Format | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd |
| Interface | Parallel | Parallel | Parallel | Parallel |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.75V ~ 5.5V | 4.5V ~ 5.5V |
| Voltage - Supply, Battery | 2.3V ~ 4V | 2.3V ~ 4V | 2.3V ~ 4V | 2.3V ~ 4V |
| Current - Timekeeping (Max) | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 28-DIP (0.600", 15.24mm) |
| Supplier Device Package | 28-SOIC | 28-SOIC | 28-SOIC | 28-PDIP |
