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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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Ordering Information
Notes:

  1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
  2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
  3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
  4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


Devices: 1-4 of 4

DS1688 Free
Sample
Buy
Package: TYPE PINS FOOTPRINT
  DRAWING CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
DS1688  
PDIP;28 pin;
Dwg: 21-0044B (PDF)
Use pkgcode/variation: P28-6*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
DS1688S  
SOIC;28 pin;
Dwg: 56-G2009-028
Use pkgcode/variation: F28-3*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
DS1688S+  
SOIC;28 pin;
Dwg: 56-G2009-028
Use pkgcode/variation: F28+3*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
DS1691 Free
Sample
Buy
Package: TYPE PINS FOOTPRINT
  DRAWING CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
DS1691  
MOD;28 pin;
Dwg: 56-G0001-001
Use pkgcode/variation: MDP28-2*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis

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



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