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DS1992/DS1993
PHYSICAL SPECIFICATIONS
Size
Weight
Expected Service Life
Safety
See mechanical drawing
3.3 grams (F5 package)
10 years at +25 ° C
Meets UL 913, 5th Ed., Rev. 1997-02-24; Intrinsically Safe
Apparatus, Approved under Entity Concept for use in
Class I, Division 1, Group A, B, C, and D Locations
ABSOLUTE MAXIMUM RATINGS
Voltage Range on any Pin Relative to Ground
Operating Temperature Range
Storage Temperature Range
-0.5V to +7.0V
-40 ° C to +70 ° C
-40 ° C to +70 ° C
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect
reliability.
DC ELECTRICAL CHARACTERISTICS
(T A = -40 ° C to +70 ° C)
PARAMETER
1-Wire Pullup Voltage
(Notes 1, 3)
Logic 1 (Notes 1, 2)
Logic 0 (Note 1)
SYMBOL
V PUP
V IH
V IL
MIN
2.8
2.2
-0.3
TYP
MAX
6.0
+0.3
UNITS
V
V
V
Output Logic Low at 4mA
(Note 1)
Input Load Current (Note 4)
V OL
I L
5
0.4
V
μ A
CAPACITANCE
(T A = +25 ° C)
PARAMETER
I/O (1-Wire) (Notes 5, 6)
SYMBOL
C IN/OUT
MIN
TYP
100
MAX
800
UNITS
pF
AC ELECTRICAL CHARACTERISTICS
(V PUP = 2.8V to 6.0V, T A = -40 ° C to +70 ° C)
PARAMETER
Time Slot
Write 1 Low Time
Write 0 Low Time
SYMBOL
t SLOT
t LOW1
t LOW0
MIN
60
1
60
TYP
MAX
120
15
120
UNITS
μ s
μ s
μ s
Read Data Valid
t RDV
exactly 15
μ s
Release Time
t RELEASE
0
15
45
μ s
Read Data Setup (Note 7)
Recovery Time
Reset Time High (Note 8)
t SU
t REC
t RSTH
1
480
1
μ s
μ s
μ s
Reset Time Low (Note 9)
Presence Detect High
Presence Detect Low
t RSTL
t PDH
t PDL
480
15
60
960
60
240
μ s
μ s
μ s
15 of 17
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