Datasheet
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MAX31826
1-Wire Digital Temperature Sensor
with 1Kb Lockable EEPROM
Voltage Range on Any Pin Relative to Ground .... -0.5V to +4.5V
Continuous Power Dissipation (T
A
= +70NC)
FMAX (derate 4.5mW/NC above +70NC) .....................362mW
Operating Temperature Range ........................ -55NC to +125NC
Storage Temperature Range ............................ -55NC to +125NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(T
A
= -55°C to +125°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
DD
Local power (Note 2) +3.0 +3.7 V
Pullup Supply Voltage
(Notes 2, 3)
V
PU
Parasite power +3.0 +3.7
V
Local power +3.0 V
DD
Thermometer Error (Note 4) T
ERR
-10NC to +85NC
-0.5
Q0.25
+0.5
NC
-55NC to +125NC
-2 +2
Input Logic-Low V
IL
(Notes 2, 5) -0.3 +0.8 V
Input Logic-High (Notes 2, 6) V
IH
Local power +2.4
lower
of 3.7V
or
(V
DD
+
0.3V)
V
Parasite power +3.0
lower
of 3.7V
or
(V
DD
+
0.3V)
Sink Current I
L
V
I/O
= 0.4V (Note 2) 4.0 mA
Standby Current I
DDS
(Notes 7, 8) 350 1000 nA
Active Current I
DD
V
DD
= 3.7V (Note 9) 650 1200
FA
Active Current with
Communication
800 1500
FA
POR Time t
POR
Local or parasite power 4 7.8 ms
Input Leakage Current
(AD0–AD3 Pins)
-1 +1
FA
DQ Input Current I
DQ
(Note 10) 5
FA