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| Part Number | DS1390U-18+ | DS1391U-18+ | DS1393U-18+ | DS1392U-18+ | DS1340U-18+ |
|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Active | Active | Obsolete | Obsolete | Active |
| Type | Clock/Calendar | Clock/Calendar | - | - | Clock/Calendar |
| Features | Alarm, Leap Year, Square Wave Output, Trickle-Charger | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | - | Leap Year, Trickle-Charger |
| Memory Size | - | - | - | - | - |
| Time Format | HH:MM:SS:hh (12/24 hr) | HH:MM:SS:hh (12/24 hr) | - | - | HH:MM:SS (24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | - | - | YY-MM-DD-dd |
| Interface | SPI | SPI | - | - | I²C, 2-Wire Serial |
| Voltage - Supply | 1.71V ~ 1.89V | 1.71V ~ 1.89V | - | - | 1.71V ~ 5.5V |
| Voltage - Supply, Battery | 1.3V ~ 3.7V | 1.3V ~ 3.7V | - | - | 1.3V ~ 3.7V |
| Current - Timekeeping (Max) | 100µA @ 1.71V ~ 1.89V | 100µA @ 1.71V ~ 1.89V | - | - | 100µA @ 1.89V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | - | - | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | - | - | Surface Mount |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | - | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 10-uMAX/uSOP | 10-uMAX/uSOP | - | - | 8-uMAX/uSOP |
