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WHAT'S NEW PRODUCTS SOLUTIONS DESIGN APPNOTES SUPPORT BUY COMPANY MEMBERS
Maxim > Products > Real-Time Clocks 
DS1688, DS1691
3 Volt/5 Volt Serialized Real-Time Clock with NV RAM Control

Recommended Upgrades for New Designs
Part Number Replacement Explanation
DS1688 DS1685 There is no direct replacement. The DS1685 has 242 bytes of RAM.
DS1688S DS1685
DS1688S+ DS1685
DS1688 DS17285 There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended RAM.
DS1688 DS17485
DS1688 DS17885
DS1691 DS1685 There is no direct replacement. The DS1685 has 242 bytes of RAM.
DS1691 DS17285 There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended RAM.
DS1691 DS17485
DS1691 DS17885


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Data Sheet
FULL DATA SHEET (PDF, 400kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Application Notes
  		• Application Note 58: Crystal Considerations with Dallas Real-Time Clocks (RTCs) - DS1688
  		• Application Note 499: Using the Multiplex Bus RTC Extended Features - DS1688, DS1691
  		• Application Note 504: Design Considerations for Dallas Semiconductor Real-Time Clocks - DS1688, DS1691
  		• Application Note 505: Lithium Coin-Cell Batteries: Predicting an Application Lifetime - DS1688
  		• Application Note 701: Using the DS32kHz with Dallas Real-Time Clocks - DS1688
  		• Application Note 1145: Interface a Multiplexed-Bus Real-Time Clock to a µP With Separate Address and Data Buses - DS1688, DS1691
  		• Application Note 3778: Problems and Solutions for Adjusting to Changes in Daylight Saving Time - DS1688, DS1691

    Evaluation Kits
    none

    Design Guides
  		• REAL-TIME CLOCKS (PDF)
  		• NONVOLATILE MEMORY (PDF)

    Reliability Reports
  		• Reliability Report: DS1688.pdf DS1691.pdf
  		• Underwriters Laboratories (UL®) Recognized

    Software/Models
    none

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    2005-11-28
    This page last modified: 2007-06-19




             


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