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Status
| Part Number |
Status |
Replacement |
Explanation |
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DS2223
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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. See Ordering
Information for details.
| DS2431
| Full 1-Wire interface, 256-bit EEPROM |
|
DS2224
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This product is No Longer Available. See Ordering Information for recommended replacements. | DS2423
DS2431
| Full 1-Wire interface, 256-bit EEPROM |
Description
Neither the DS2223 or DS2224 are available for new designs.
The DS2223 and DS2224 EconoRAMs are fully static, micropowered, read/write memories in low-cost TO-92 or SOT-223 packages. The DS2223 is organized as a serial 256 x 1-bit static read/write memory. The DS2224's first 32 bits are lasered with a unique ID code at the time of manufacture; the remaining 224 bits are static read/write memory. Signaling necessary for reading or writing is reduced to just one interface lead.
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Data Sheet
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Key Features
- Low-cost, general-purpose, 256-bit memory
- DS2223 has 256-bit SRAM
- DS2224 has 32-bit ROM, 224-bit SRAM
- Reduces control, address, and data interface to a single pin
- Each DS2224 32-bit ROM is factory-lasered with a unique serial number
- DS2224 portion of ROM with custom code and unique serial number available
- Minimal operating power: 45 nanocoulombs per transaction at 1.5V typical
- Less than 15nA standby current at +25°C
- Nonvolatile data retention easily achieved by low-cost alkaline batteries or capacitors
- Directly connects to a port pin of popular microcontrollers
- Operation from 1.2V to 5.5V
- Popular TO-92 or SOT-223 surface mount package
- Operates over industrial temperature range -40°C to +85°C
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Reliability Reports
| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
|
Free
Sample |
Buy |
Status
|
Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
|
Temp |
RoHS/Lead-Free?
Materials Analysis
|
| DS2223
|
|
N/A |
No Longer Available |
DS2431
DS2423
Full 1-Wire interface, 256-bit EEPROM |
TO92;
Land Pattern: Not Available
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-40°C to +85°C
|
See data sheet
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| DS2223Z
|
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N/A |
NRND |
DS2431
|
ST223;
Land Pattern: Not Available
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-40°C to +85°C
|
See data sheet
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| DS2223Z/T&R
|
|
N/A |
NRND |
DS2431
|
ST223;
Land Pattern: Not Available
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-40°C to +85°C
|
See data sheet
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| DS2224Z+T&R
|
|
N/A |
No Longer Available |
DS2423
|
ST223;
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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Didn't Find What You Need?
Information Index
Rev 1;
1998-08-05
This page last modified: 2007-07-25
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