DS1339B

PRODUCTION

Low-Current, I2C, Serial Real-Time Clock for High-ESR Crystals

RTC Provides an Upgrade to the DS1339A by Supporting Crystals with a 100kΩ ESR

Part Models
2
1ku List Price
Starting From $2.41
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Part Details

  • Drop-In Replacement for DS1339
  • Supports High-ESR Crystals Up to 100kΩ to Allow Crystals to be Optimized for Cost and Space
  • 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 2200
    • Two Time-of-Day Alarms
    • Programmable Square-Wave Output Signal
  • Low-Power Operation Extends Battery Backup Run Time
    • Automatic Power-Fail Detect and Switch Circuitry
  • Simple Serial Port Interfaces to Most Microcontrollers
    • I2C Serial Interface
  • Underwriters Laboratories (UL®) Recognized
DS1339B
Low-Current, I2C, Serial Real-Time Clock for High-ESR Crystals
DS1339B: Functional Diagram
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Hardware Ecosystem

Parts Product Life Cycle Description
Serial Address RTCs 2
DS1339A PRODUCTION Low-Current, I²C, Serial Real-Time Clock
DS1339 PRODUCTION I²C Serial Real-Time Clock
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