| Part Number | DS1683S+ | 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 | Active | Obsolete | 
| Type | Elapsed Time Counter | Clock/Calendar | 
| Features | Alarm, EEPROM | Alarm, Leap Year, Square Wave Output, Unique ID | 
| Memory Size | 16B | 114B | 
| Time Format | Binary | HH:MM:SS (12/24 hr) | 
| Date Format | Binary | YY-MM-DD | 
| Interface | I²C, 2-Wire Serial | Parallel | 
| Voltage - Supply | 2.5V ~ 5.5V | 2.7V ~ 3.3V, 4.5V ~ 5.5V | 
| Voltage - Supply, Battery | - | - | 
| Current - Timekeeping (Max) | - | - | 
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 28-SOIC (0.337", 8.56mm Width) | 
| Supplier Device Package | 8-SOIC | 28-SOIC |