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DS1339U-2+ The Analog Devices DS1339U-2+ is an I2C serial real-time clock IC. It manages timekeeping functions, including seconds, minutes, hours, date, month, and year, with leap-year compensation.
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DS1339U-2+

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS1339U-2+ is an I2C serial real-time clock IC. It manages timekeeping functions, including seconds, minutes, hours, date, month, and year, with leap-year compensation.
✓ Total Stock: 25 pcs

DS1339U-2+ Available from 1 distributor

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25 pcs
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DS1339U-2+ Specifications Quick View

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DS1339U-2+ Description

Short technical summary and product information.

The DS1339U-2+ from Analog Devices is a low-power serial real-time clock (RTC) IC designed for accurate timekeeping. It interfaces with microcontrollers via an I2C serial bus, supporting both 12-hour and 24-hour formats with an AM/PM indicator. The device manages seconds, minutes, hours, day of the week, date, month, and year, automatically adjusting for months with fewer than 31 days and leap years up to 2100.

 

Key features include two programmable time-of-day alarms and a programmable square-wave output. It has a built-in power-sense circuit that detects power failures and switches to a backup supply, ensuring continuous operation. The trickle-charge capability extends battery backup run time.

 

This RTC IC is available in an 8-uMAX/uSOP or 8-TSSOP, 8-MSOP package, suitable for surface-mount applications. Its operating temperature range is -40°C to 85°C, and it operates within a voltage range of 1.3V to 3.7V.

 

Applications for the DS1339U-2+ include handheld devices, consumer electronics, office equipment, medical devices, and telecommunications infrastructure.

DS1339U-2+ Quick Information

Product Type: Real-Time Clock IC
Canonical Name: DS1339U-2+ Real-Time Clock IC
Subcategory: Clock/Calendar

DS1339U-2+ Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

DS1339U-2+ Features

  • Manages timekeeping functions including leap year.
  • Includes two programmable time-of-day alarms.
  • Provides a programmable square-wave output.
  • Features automatic power-fail detection.
  • Supports I2C serial interface for microcontrollers.

DS1339U-2+ Applications

  • Ideal for handheld devices like GPS.
  • Suitable for consumer electronics.
  • Used in office equipment and printers.
  • Applicable in medical devices.
  • Supports telecommunications infrastructure.

DS1339U-2+ FAQs

7 frequently asked questions generated from this part’s specifications.
What are the key features of the DS1339U-2+?

The DS1339U-2+ features include Alarm, Leap Year, Square Wave Output, and Trickle-Charger.

What is the operating voltage range for the DS1339U-2+?

The operating voltage range for the DS1339U-2+ is 1.3V to 3.7V.

What is the operating temperature range of the DS1339U-2+?

The DS1339U-2+ operates within a temperature range of -40°C to 85°C.

What package is the DS1339U-2+ available in?

The DS1339U-2+ is available in an 8-uMAX/uSOP or 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) package.

What interface does the DS1339U-2+ use?

The DS1339U-2+ uses an I2C, 2-Wire Serial interface.

What time formats does the DS1339U-2+ support?

The DS1339U-2+ supports HH:MM:SS in both 12-hour and 24-hour formats.

Does the DS1339U-2+ have alarm capabilities?

Yes, the DS1339U-2+ has two programmable time-of-day alarms.

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