DS1921K# Maxim Integrated Products, DS1921K# Datasheet - Page 4

• Manufacturer Part Number: DS1921K#
• Description: KIT IBUTTON THERMOCHRON
• Manufacturer: Maxim Integrated Products
• Series: iButton®r

Specifications of DS1921K#

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Memory Type: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Thermochron iButton
ELECTRICAL CHARACTERISTICS (continued)
(V
Note 17: WARNING: Not for use as the sole method of measuring or tracking temperature in products and articles that could affect
Note 18: The number of temperature conversions (= samples) possible with the built-in energy source depends on the operating and
COMPARISON TABLE
* Intentional change; longer recovery time between time slots.
Note: Numbers in bold are not in compliance with the published iButton standards.
iButton CAN PHYSICAL SPECIFICATION
4
t
t
t
t
t
t
SIZE
WEIGHT
SAFETY
SLOT
REC
RSTL
PDH
PDL
W0L
PUP
PARAMETER
_______________________________________________________________________________________
)
= +2.8V to +5.25V, T
(including
the health or safety of persons, plants, animals, or other living organisms, including but not limited to foods, beverages,
pharmaceuticals, medications, blood and blood products, organs, flammable, and combustible products. User shall
assure that redundant (or other primary) methods of testing and determining the handling methods, quality, and fitness of
the articles and products should be implemented. Temperature tracking with this product, where the health or safety of the
aforementioned persons or things could be adversely affected, is only recommended when supplemental or redundant
information sources are used. Data-logger products are 100% tested and calibrated at time of manufacture by Maxim to
ensure that they meet all data sheet parameters, including temperature accuracy. User shall be responsible for proper use
and storage of this product. As with any sensor-based product, user shall also be responsible for occasionally rechecking
the temperature accuracy of the product to ensure it is still operating properly.
storage temperature of the device. When not in use for a mission, the RTC oscillator should be turned off and the device
should be stored at a temperature not exceeding +25°C. Under this condition the shelf life time is 10 years minimum.
See the Package Information section.
Ca. 3.3g
Meets UL 913 (4th Edit.); Intrinsically Safe Apparatus, approval under Entity Concept for use in Class I, Division 1,
Group A, B, C, and D Locations.
STANDARD SPEED (μs)
MIN
480
61
15
60
60
A
= -40°C to +85°C.)
(undefined)
(undefined)
MAX
LEGACY VALUES
240
120
60
OVERDRIVE SPEED (μs) STANDARD SPEED (μs)
MIN
48
7
2
8
6
(undefined)
MAX
80
24
16
6
MIN
540
65*
15
60
60
(undefined)
DS1921G VALUES
MAX
640
270
120
60
OVERDRIVE SPEED (μs)
MIN
1.1
7.5
8.5
58
8*
(undefined)
MAX
80
32
15
6