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| Part Number | BQ3285EP | BQ3285ES | BQ4285EP |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Obsolete | Obsolete |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output |
| Memory Size | 242B | 242B | 114B |
| Time Format | 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 |
| Interface | Parallel | Parallel | Parallel |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Voltage - Supply, Battery | 2.5V ~ 4V | 2.5V ~ 4V | 2.5V ~ 4V |
| Current - Timekeeping (Max) | 300µA @ 5V | 300µA @ 5V | 300µA @ 5V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Surface Mount | Through Hole |
| Package / Case | 24-DIP (0.600", 15.24mm) | 24-SOIC (0.295", 7.50mm Width) | 24-DIP (0.600", 15.24mm) |
| Supplier Device Package | 24-PDIP | 24-SOIC | 24-PDIP |
