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

Ordering Info

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Status

Part Number	Status	Replacement	Explanation
DS1688	This product is No Longer Available.	DS1685 DS17285 DS17485 DS17885	There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended RAM.
DS1691	This product is No Longer Available.	DS1685 DS17285 DS17485 DS17885	There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended RAM.

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Tape and Reel

Sample

Part Number	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	DS1685-5+ There is no direct replacement. The DS17x85 has 2K, 4K, and 8K bytes extended 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		N/A	No Longer Available	DS1687-5+ 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

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* 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.

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Rev 2; 2005-11-28
This page last modified: 2009-06-04