Datasheet
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
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© 2013 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
DS1922L/DS1922T
iButton Temperature Loggers
with 8KB Data-Log Memory
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
7 12/07
Added bullet “Water resistant or waterproof if placed inside DS9107 iButton capsule
(Exceeds Water Resistant 3 ATM requirements)”; deleted “application pending” from
UL bullet and safety statement; added text to Application section: Note that the initial
sealing level of DS1922L/DS1922T 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 Thermochron in the DS9107 iButton capsule. The DS9107 provides a watertight
enclosure that has been rated to IP68 (See www.maxim-ic.com/AN4126)
1, 4, 12
8 4/09 Created newer template-styled data sheet All
9 10/09 Deleted the standard part numbers from the Ordering Information table 1
10 4/11
Updated UL certificate reference; deleted from the t
W1L
specification in the Electrical
Characteristics table; applied note 14 to the t
W0L
specification in the Electrical
Characteristics table; added more details to Electrical Characteristics table notes 5,
14, and 15; 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
1, 3, 4, 13, 25
11 6/13
Removed the UL 913 5th Ed. Compliance statement from the Common iButton Device
Features section and iButton Can Physical Specification table; reworded the Electrical
Characteristics table Note 19
1, 4
12 11/13
Added the Busy state during Copy Scratchpad to the Command-Specific 1-Wire
Communication Protocol—Legend and 1-Wire Communication Examples sections
45, 46