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DS1821
 
15 of 19
ABSOLUTE MAXIMUM RATINGS
Voltage on Any Pin Relative to ground
 
 
 
0.5V to +7.0V
Operating Temperature Range
 
 
 
55癈 to +125癈
Storage Temperature Range
 
 
 
55癈 to +125癈
Soldering Temperature (reflow, SO)
 
 
 
+260癈
  (wave, TO92)
 
 
 
+250癈
Lead Temperature (soldering, 10s)
 
 
 
+300癈
 
These are stress ratings 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
(-55癈 to +125癈; V
DD
=2.7V to 5.5V)
PARAMETER    SYMBOL
CONDITION
MIN    TYP
MAX
UNITS    NOTES
Supply Voltage
V
DD
 
 
+2.7
 
+5.5
 
1
Thermometer
Error
t
ERR
 
0癈 to +85癈
V
DD
= 3.6V to 5.5V
 
 
?
癈
2,3,4
 
-55癈 to +125癈
V
DD
= 3.6V to 5.5V
 
See Typical Curve (Figure 11)
 
D   Lo  ic Low
V
IL
 
 
-0.3
 
+0.8
V
1 5
DQ Logic High
V
IH
 
 
+2
 
The lower of
+5.5
or
V    + 0.3
V
1,6
Sink Current
I
L
 
V
DQ
 = 0.4V
=
4
 
 
mA
1
Standb   Current
I
-55癈 to +85癈 
 
1
3
A
7
Active Current
I
DD
 
V
DD
= 5V
 
500
1000
礎
8
DQ Input
Current
I
DQ
 
 
 
5
 
礎
9
 
NOTES:
1.    All voltages are referenced to ground.
2.    Thermometer error reflects the sensor accuracy as tested during calibration.
3.    See typical performance curve in Figure 11 for specification limits outside the 0癈 to +85癈 range.
4.    For T<0癈, accuracy degrades by 0.5癈/V for V
DD
 <4.3V. 
5.    Logic low voltages are specified at a sink current of 4 mA.
6.    Logic high voltages are specified at a source current of 1 mA.
7.    Standby current is typically 5 礎 at 125癈.
8.    Active current refers to supply current during active temperature conversions or EEPROM writes.
9.    DQ line is high (hi-Z state).
 
 
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