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DS1687 - (DS1685 / DS1687) 3V/5V Real-Time Clocks

Download the DS1687 datasheet PDF. This datasheet also covers the DS1685 variant, as both devices belong to the same (ds1685 / ds1687) 3v/5v real-time clocks family and are provided as variant models within a single manufacturer datasheet.

General Description

The DS1685/DS1687 are real-time clocks (RTC) designed as successors to the industry-standard DS1285, DS1385, DS1485, and DS1585 PC RTCs.

These devices provide the industry-standard DS1285 clock function with either +3.0V or +5.0V operation.

Key Features

  • Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as:.
  • Y2K Compliant.
  • +3V or +5V Operation.
  • 64-Bit Silicon Serial Number.
  • Power-Control Circuitry Supports System PowerOn from Date/Time Alarm or Key Closure.
  • 32kHz Output for Power Management.
  • Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal.
  • SMI Recovery Stack.
  • 242 Bytes Battery-Backed NV RAM.
  • Auxiliary Battery Input.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DS1685_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
DS1680 Portable System Controller Dallas Semiconductor
DS1682 Total-Elapsed-Time Recorder Maxim Integrated
DS1683 Total-Elapsed-Time and Event Recorder Maxim
DS1688 (DS1688 / DS1691) 3 Volt/5 Volt Serialized Real Time Clock Dallas Semiconductor
DS1689 (DS1689 / DS1693) 3-Volt/5-Volt Serialized Real-Time Clock Dallas Semiconductor

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
DS1685 (DS1685 / DS1687) 3V/5V Real-Time Clocks
DS1643 Nonvolatile Timekeeping RAMs
DS1643P Nonvolatile Timekeeping RAMs
DS1080CL Spread-Spectrum Crystal Multiplier
DS1081L Spread-Spectrum Clock Modulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
www.DataSheet4U.com DS1685/DS1687 3V/5V Real-Time Clocks www.maxim-ic.com FEATURES Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as: § Y2K Compliant § +3V or +5V Operation § 64-Bit Silicon Serial Number § Power-Control Circuitry Supports System PowerOn from Date/Time Alarm or Key Closure § 32kHz Output for Power Management § Crystal-Select Bit Allows RTC to Operate with 6pF or 12.