1. Products
  2. Clock and Timing
  3. Real-Time Clocks
  4. Serial Address RTCs
  5. DS1339


Overview

Features and Benefits

  • Completely Manages All Timekeeping Functions
    • Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
    • Two Time-of-Day Alarms
    • Programmable Square-Wave Output
    • Oscillator Stop Flag
  • Interfaces to Most Microcontrollers
    • I2C Serial Interface
  • Low-Power Operation Extends Battery Backup Run Time
    • Automatic Power-Fail Detect and Switch Circuitry
    • Trickle-Charge Capability
  • Underwriters Laboratories® (UL) Recognized
  • Surface-Mount Package with an Integrated Crystal (DS1339C Saves Additional Space and Simplifies Design

Product Details

The DS1339 serial real-time clock (RTC) is a low-power clock/date device with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially through an I²C bus. The clock/date provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1339 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation.

Applications

  • Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance)
  • Handhelds (GPS, POS Terminal)
  • Medical (Glucometer, Medicine Dispenser)
  • Office Equipment (Fax/Printer, Copier)
  • Other (Utility Meter, Vending Machine, Thermostat, Modem)
  • Telecommunications (Router, Switcher, Server)

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

DS1339 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
DS1339C-2# Material Declaration Reliability Data 16-SOIC_W-300_MIL
DS1339C-3# Material Declaration Reliability Data 16-SOIC_W-300_MIL
DS1339C-33# Material Declaration Reliability Data 16-SOIC_W-300_MIL
DS1339C-33#T&R Material Declaration Reliability Data 16-SOIC_W-300_MIL
DS1339U-2+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
DS1339U-2+T&R Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
DS1339U-3+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
DS1339U-3+T&R Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
DS1339U-33+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
DS1339U-33+T&R Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
Wafer Fabrication Data DS1339 Reliability Data

PCN-PDN Information

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Sample & Buy


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Buy Now Pricing


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List Pricing


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