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DS1921G
Thermochron iButton Device
Revision History
REVISION
DATE
120407
4/09
4/10
4/11
9/11
3/12
6/13
11/13
DESCRIPTION
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 Detailed Description section: Note that the initial sealing level of DS1921G 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.maximintegrated.com/AN4126 )
Created newer template-style data sheet
Overdrive specifications for t RSTL , t PDL , and t W0L split into range V PUP > 4.5V and full range. New
values for the full range
from the t W1L specification in the Electrical Characteristics
Updated UL certificate reference; deleted
table; applied note 13 to the t W0L specification in the Electrical Characteristics table; added more
details to Electrical Characteristics table notes 7, 13, and 14
DS1921G-F5N# part number added to the Ordering Information ; branding information updated in the
Pin Configuration
Added terminology updates for consistency with similar products; added more details to the Parasite
Power section
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 17
Added the Busy state during Copy Scratchpad to the Command-Specific 1-Wire Communication
Protocol—Legend and 1-Wire Communication Examples sections
PAGES
CHANGED
1, 2
All
2 –4
1, 3, 4
1, 41
1, 7, 8,
9, 14
1, 4
35
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.
42
? 2013 Maxim Integrated Products, Inc.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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相关代理商/技术参数
DS1921G-F5#W
功能描述:iButton RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A0C
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A12
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A12-W
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A14
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A15
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A17
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921G-F5/A1B
功能描述:iButton
RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated