DS1923 Maxim, DS1923 Datasheet - Page 55

• Manufacturer Part Number: DS1923
• Description: The DS1923 temperature/humidity logger iButton® is a rugged, self-sufficient system that measures temperature and/or humidity and records the result in a protected memory section
• Manufacturer: Maxim

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 55
© 2011 Maxim Integrated Products
REVISION
NUMBER
0
1
2
3
4
REVISION
Hygrochron Temperature/Humidity Logger
DATE
12/07
10/09
8/04
4/09
4/11
Initial release
Changed bullet from “Hydrophobic Filter Protects Sensor Against Dust, Dirt, Water, and
Contaminants” to “Hydrophobic Filter Protects Sensor Against Dust, Dirt, Contaminants,
and Water Droplets/Condensation”; deleted “Application Pending” from UL bullet and
safety statement; added text to the Application section: Note that the initial sealing
level of DS1923 achieves IP56. Aging and use conditions can degrade the integrity of
the seal over time, so for applications with significant exposure to liquids, sprays, or
other similar environments, it is recommended to place the Hygrochron under a shield
to protect it. (See www.maxim-ic.com/AN4126). The hydrophobic filter may not protect
the DS1923 from destruction in the event of full submersion in liquid
Created newer template-style data sheet
Deleted the standard part number from the Ordering Information table
Updated UL certificate reference; added “Guaranteed by design” note to Electrical
Characteristics table; deleted from the t
Characteristics table; applied note 13 to the t
Characteristics table; changed RTC accuracy specification in the Electrical
Characteristics table from numbers to graph; added more details to Electrical
Characteristics table notes 4, 13, and 14; revised the last sentence of the Parasite
Power section for more clarity; added paragraph on validation certificates to Detailed
Description section; added more details on the Device Samples Counter in the Other
Indicators section
iButton with 8KB Data-Log Memory
DESCRIPTION
Maxim is a registered trademark of Maxim Integrated Products, Inc.
W1L
W0L
specification in the Electrical
specification in the Electrical
Revision History
1–5, 11, 24
CHANGED
PAGES
1, 4, 10
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