DS1921H_11 MAXIM [Maxim Integrated Products], DS1921H_11 Datasheet - Page 45

• Manufacturer Part Number: DS1921H_11
• Description: High-Resolution Thermochron iButton
• Manufacturer: MAXIM [Maxim Integrated Products]

REVISION HISTORY
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.
M a x i m I n t e g r a t e d P r o d u c t s , 1 2 0 S a n G a b r i e l D r iv e , S u n n y v a le , C A 9 4 0 8 6 4 0 8- 7 3 7 - 7 6 0 0
© 2011 Maxim Integrated Products
REVISION
020402
091202
100703
121003
051104
110504
082906
120407
DATE
12/11
8/09
Initial release
Various updates to the Electrical Characteristics table, note 16 added.
Branding change from Dallas to iButton, style updates, more detailed
Corrected the location of the CENT bit.
Added note 18 to Electrical Characteristics table.
Extended note 18 of the Electrical Characteristics table.
Changed UL text (from “application pending” to “designed to meet...”);
Added bullet “Water resistant or waterproof if placed inside DS9107
Add text to Application section: Note that the initial sealing level of
Added the # sign to the Part Numbers in the Ordering Information table,
Removed the UL#913 bullet from the Common iButton Features
Marking updated for RoHS.
Revised the last sentence of the Parasite Power section for more clarity.
In the Electrical Characteristics table, deleted ε from the t
Added the Package Information section and completed the Revision
register page map, various text updates regarding mission start and
1-Wire communication, added sections Mission Start and Logging
Process plus graphic, Memory Access Conflicts and Command-Specific
1-Wire Communication Protocol, note 17 added to Electrical
Characteristics table.
deleted row “Safety” from physical specification.
iButton capsule (Exceeds Water Resistant 3 ATM requirements)”.
DS1921H/Z 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).
indicating RoHS-compliant packages.
section.
specification, applied Note 11 to the t
details notes 6, 11 and 12.
History.
DESCRIPTION
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Maxim is a registered trademark of Maxim Integrated Products, Inc.
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DS1921H/Z
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