| Part Number | DS1678S | DS1688S+ |
|---|---|---|
| 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 | Time Event Recorder | Clock/Calendar |
| Features | Alarm, Leap Year, NVSRAM, Y2K | Alarm, Leap Year, Square Wave Output, Unique ID |
| Memory Size | 32B | 114B |
| Time Format | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD |
| Interface | I²C, 2-Wire Serial | Parallel |
| Voltage - Supply | 4.5V ~ 5.5V | 2.7V ~ 3.3V, 4.5V ~ 5.5V |
| Voltage - Supply, Battery | 2.6V ~ 3.5V | - |
| Current - Timekeeping (Max) | - | - |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.209", 5.30mm Width) | 28-SOIC (0.337", 8.56mm Width) |
| Supplier Device Package | 8-SOIC | 28-SOIC |