16K Nonvolatile SRAM

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Part Number	Status	Replacement	Explanation
DS1220Y	This product is Not Recommended for New Designs. Some versions may be No Longer Available or being discontinued and subject to Last Time Buy, after which new orders can not be placed.	DS1220AD	Replacement units for existing systems are still available. Do not substitute product types. 1) Write protection voltage (V_TP) on the DS1220Y and DS1225Y are determined by an internal voltage-divider circuit (~1.26 x V_BAT). As the internal battery in the module degrades, the corresponding V_TP also degrades, resulting in a change in the response of the module to system power loss. The AB/AD versions have a precision band-gap reference voltage that is independent of the battery. 2) Storage and handling of battery-backed products can be critical to achieve the expected 10 years of potential data retention from a new module. The DS1220Y and DS1225Y do not contain the Freshness Seal circuitry, which means the 10 year warranty begins with date of manufacture, as opposed to the date of customer's first use on AB/AD versions.

Data Sheet

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Tape and Reel

Sample

Part Number	Notes	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1220Y-100	10% Tolerance, 100ns		N/A	No Longer Available	DS1220Y-100+	MOD;24 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-100+			N/A	NRND	DS1220AD-100+	MOD; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-100IND			N/A	No Longer Available	DS1220Y-100IND+	MOD; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1220Y-100IND+			N/A	NRND	DS1220AD-100IND+	MOD; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1220Y-120	10% Tolerance, 120ns		N/A	No Longer Available	DS1220Y-100+	MOD;24 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-120+			N/A	NRND	DS1220AD-100+	MOD; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-150			N/A	No Longer Available	DS1220Y-100+	MOD; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-150+			N/A	NRND	DS1220AD-100IND+	MOD; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-200	10% Tolerance, 200ns		N/A	No Longer Available	DS1220Y-100+	MOD;24 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1220Y-200+			N/A	NRND	DS1220AD-100+	MOD; Land Pattern: Not Available	0°C to +70°C	See data sheet
Part Number	Notes	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1220Y-200IND	10% Tolerance, 200ns		N/A	No Longer Available	DS1220Y-100IND+	MOD;24 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1220Y-200IND+			N/A	NRND	DS1220AD-100IND+	MOD; Land Pattern: Not Available	-40°C to +85°C	See data sheet

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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Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-5579 Rev 2; 2010-10-19
This page last modified: 2010-10-19

16K Nonvolatile SRAM

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Data Sheet

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Information Index

Overview

Technical Documents

Ordering Info

Related Products