| Part Number | DS1308U-33+ | DS1338U-33 |
|---|---|---|
| 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 | Clock/Calendar | Clock/Calendar |
| Features | Leap Year, NVSRAM, Square Wave Output | Leap Year, NVSRAM, Square Wave Output |
| Memory Size | 56B | 56B |
| 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 | I²C, 2-Wire Serial |
| Voltage - Supply | 3V ~ 5.5V | 3V ~ 5.5V |
| Voltage - Supply, Battery | 1.3V ~ 5.5V | 1.3V ~ 3.7V |
| Current - Timekeeping (Max) | 125µA ~ 200µA @ 3V ~ 5.5V | 125µA ~ 200µA @ 3.63V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 8-uMAX/uSOP | 8-uMAX/uSOP |