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| Part Number | DS1306EN+T&R | DS1306EN/T&R | DS1305EN+T&R | DS1306E+T&R |
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Active | Obsolete | Active | Active |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | Alarm, Leap Year, NVSRAM, Trickle-Charger | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger |
| Memory Size | 96B | 96B | 96B | 96B |
| Time Format | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd |
| Interface | SPI | SPI | SPI | SPI |
| Voltage - Supply | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V |
| Voltage - Supply, Battery | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V |
| Current - Timekeeping (Max) | 25.3µA ~ 81µA @ 2V ~ 5V | 25.3µA ~ 81µA @ 2V ~ 5V | 25.3µA ~ 81µA @ 2V ~ 5V | 25.3µA ~ 81µA @ 2V ~ 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP |
