| Part Number | DS1307 | DS1306 |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Category | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks |
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| Product Status | Obsolete | Obsolete |
| Type | Clock/Calendar | Clock/Calendar |
| Features | Leap Year, NVSRAM, Square Wave Output | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger |
| Memory Size | 56B | 96B |
| Time Format | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial | SPI |
| Voltage - Supply | 4.5V ~ 5.5V | 2V ~ 5.5V |
| Voltage - Supply, Battery | 2V ~ 3.5V | 2V ~ 5.5V |
| Current - Timekeeping (Max) | 200µA @ 5V | 25.3µA ~ 81µA @ 2V ~ 5V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP | 16-PDIP |