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DS1688, DS1691
3 Volt/5 Volt Serialized Real-Time Clock with NV RAM Control


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Status
Part Number Status Replacement Explanation
DS1688 This product is No Longer Available. DS1685 There is no direct replacement. The DS1685 has 242 bytes of RAM.
DS1691 This product is No Longer Available. DS17885 There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended RAM.

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 Status Recommended Replacement
Package: TYPE PINS FOOTPRINT
  DRAWING CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
DS1688     N/A No Longer Available DS1685
There is no direct replacement. The DS1685 has 242 bytes of RAM.
PDIP(W);28 pin;592.6 mm²
Outline Drawing: 21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28-3*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
DS1688S     N/A No Longer Available DS1685S-5+
SOIC(W);28 pin;235 mm²
Outline Drawing: 21-0251 (PDF)
Land Pattern: 90-0255 (PDF)
Use pkgcode/variation: F28-2*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
DS1688S+     N/A No Longer Available DS1685S-5+
SOIC(W);28 pin;235 mm²
Outline Drawing: 21-0251 (PDF)
Land Pattern: 90-0255 (PDF)
Use pkgcode/variation: F28+2*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
DS1691 Free
Sample
Buy Status Recommended Replacement
Package: TYPE PINS FOOTPRINT
  DRAWING CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
DS1691     N/A No Longer Available DS17885
There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended RAM.
EDIP;28 pin;625.9 mm²
Outline Drawing: 21-0241 (PDF)
Land Pattern: Not Available
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: 2009-06-04


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