DS1994 Просмотр технического описания (PDF) - Maxim Integrated
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DS1994 Datasheet PDF : 23 Pages
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PHYSICAL SPECIFICATIONS
Size
Weight
Expected Service Life
Safety
DS1994
See mechanical drawing
3.3 grams (F5 package)
10 years at 25C
Meets UL#913 (4th Edit.); 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 on any Pin Relative to Ground -0.5V to +7.0V
Operating Temperature
-40C to +70C
Storage Temperature
-40C to +70C
* 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
PARAMETER
SYMBOL MIN
1-Wire Pullup Voltage
VPUP
2.8
Logic 1
VIH
2.2
Logic 0
VIL
-0.3
Output Logic Low at 4mA
VOL
Input Load Current
IL
CAPACITANCE
PARAMETER
I/O (1-Wire)
SYMBOL
CIN/OUT
MIN
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Time Slot
tSLOT
60
Write 1 Low Time
tLOW1
1
Write 0 Low Time
tLOW0
60
Read Data Valid
tRDV
Release Time
tRELEASE
0
Read Data Setup
tSU
Interrupt
tINT
960
Recovery Time
tREC
1
Reset Time High
tRSTH
480
Reset Time Low
tRSTL
480
Presence Detect High
tPDH
15
Presence Detect Low
tPDL
60
(-40°C to +70°C)
TYP
MAX UNITS NOTES
6.0
V
1, 2
V
1
+0.8
V
1
0.4
V
1
5
A
3
(TA = 25°C)
TYP
MAX UNITS NOTES
100
800
pF
6, 8
(VPUP = 2.8V to 6.0V; -40°C to +70°C)
TYP
MAX UNITS NOTES
120
s
15
s
120
s
exactly 15
s
15
45
s
1
s
5
4800
s
s
s
4
960
s
7
60
s
240
s
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