| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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471 pcs
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471 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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300 pcs
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300 pcs | On Request | 1 | On Request | On Request | 2026-02-25 06:16:38 | On Request | On Request | |
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209 pcs
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209 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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88 pcs
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88 pcs | On Request | 1 | On Request | On Request | 06+44 | On Request | On Request |
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The DS1339U-33+ is a low-power serial real-time clock (RTC) from Analog Devices / Maxim Integrated, designed to manage all timekeeping functions. It counts seconds, minutes, hours, date, month, day of the week, and year, with leap-year compensation valid up to 2100. This device features two time-of-day alarms and a programmable square-wave output.
With an I2C serial interface, the DS1339U-33+ easily interfaces with most microcontrollers. It operates within a voltage range of 1.3V to 3.7V and has a typical current consumption of 200µA at 5.5V. The operating temperature range is -40°C to 85°C.
Key features include automatic power-fail detect and switch circuitry, which ensures continuous timekeeping during power interruptions by switching to a backup supply. It also offers trickle-charge capability to maintain the backup battery. The device is available in an 8-uMAX/uSOP surface-mount package, simplifying design and saving space.
Applications for the DS1339U-33+ include handheld devices, consumer electronics, office equipment, medical devices, and telecommunications infrastructure, where reliable timekeeping is essential.
The operating voltage for the DS1339U-33+ is 1.3V to 3.7V.
The DS1339U-33+ is available in an 8-uMAX/uSOP package and an 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) package.
The operating temperature range for the DS1339U-33+ is -40°C to 85°C.
The DS1339U-33+ uses an I2C interface.
Yes, the DS1339U-33+ has two programmable time-of-day alarms.
Key features include alarm, leap year compensation, square wave output, trickle-charger, and automatic power-fail detect.