DS1904_11 Ver la hoja de datos (PDF) - Maxim Integrated
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DS1904_11 Datasheet PDF : 13 Pages
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PHYSICAL SPECIFICATION
Size
Weight
Expected Service Life
Safety
DS1904
See mechanical drawing
3.3 grams
10 years at 25°C
Meets UL 913, 5th Ed., Rev. 1997-02-24;
Intrinsically Safe Apparatus, Approval under
Entity Concept for use in Class I, Division 1,
Group A, B, C, and D Locations
ABSOLUTE MAXIMUM RATINGS
Voltage Range on 1-Wire 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
(TA = -40°C to +70°C)
PARAMETER
SYMBOL
1-Wire Pullup Voltage
Logic 1
Logic 0
Output Logic Low at 4 mA
Input Load Current
VPUP
VIH
VIL
VOL
IL
MIN
2.8
2.2
-0.3
TYP
5
MAX
6.0
6.0
0.8
0.4
UNITS
V
V
V
V
µA
NOTES
1, 2
1
1, 5
1
3
CAPACITANCE
(TA = +25°C)
PARAMETER
Capacitance 1-Wire
SYMBOL
CIN
MIN
TYP
MAX UNITS NOTES
50
pF
8
AC ELECTRICAL CHARACTERISTICS
(VPUP = 2.8V to 6.0V, TA = -40°C to +70°C)
PARAMETER
SYMBOL
Time Slot
Write 1 Low Time
Write 0 Low Time
Read Low Time
Read Data Valid
Release Time
Read Data Setup
Recovery Time
Reset High Time
Reset Low Time
Presence Detect High
Presence Detect Low
RTC Accuracy at +25°C
tSLOT
tLOW1
tLOW0
tLOWR
tRDV
tRELEASE
tSU
tREC
tRSTH
tRSTL
tPDH
tPDL
MIN
60
1
60
1
0
1
480
480
15
60
-2
TYP
exactly 15
15
MAX
120
15
120
15
45
1
960
60
240
+2
UNITS
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
min/mth
NOTES
7
4
6
9
11 of 13
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