Datasheet

Voltage Range on Any Pin Relative to Ground ....-0.5V to +6.0V
Operating Temperature Range ......................... -55°C to +125°C
Storage Temperature Range ............................ -55°C to +125°C
Solder Temperature ............................... Refer to the IPC/JEDEC
J-STD-020 Specification.
(-55°C to +125°C; V
DD
= 3.0V to 5.5V)
Note 1: All voltages are referenced to ground.
Note 2: The Pullup Supply Voltage specification assumes that the pullup device is ideal, and therefore the high level of the
pullup is equal to V
PU
. In order to meet the V
IH
spec of the DS18B20, the actual supply rail for the strong pullup transis-
tor must include margin for the voltage drop across the transistor when it is turned on; thus: V
PU_ACTUAL
= V
PU_IDEAL
+
V
TRANSISTOR
.
Note 3: See typical performance curve in Figure 1. Thermometer Error limits are 3-sigma values.
Note 4: Logic-low voltages are specified at a sink current of 4mA.
Note 5: To guarantee a presence pulse under low voltage parasite power conditions, V
ILMAX
may have to be reduced to as low as
0.5V.
Note 6: Logic-high voltages are specified at a source current of 1mA.
Note 7: Standby current specified up to +70°C. Standby current typically is 3µA at +125°C.
Note 8: To minimize I
DDS
, DQ should be within the following ranges: GND ≤ DQ ≤ GND + 0.3V or V
DD
– 0.3V ≤ DQ ≤ V
DD
.
Note 9: Active current refers to supply current during active temperature conversions or EEPROM writes.
Note 10: DQ line is high (“high-Z” state).
Note 11: Drift data is based on a 1000-hour stress test at +125°C with V
DD
= 5.5V.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
DD
Local power (Note 1) +3.0 +5.5 V
Pullup Supply Voltage V
PU
Parasite power
(Notes 1, 2)
+3.0 +5.5
V
Local power +3.0 V
DD
Thermometer Error t
ERR
-10°C to +85°C
(Note 3)
±0.5
°C
-30°C to +100°C ±1
-55°C to +125°C ±2
Input Logic-Low V
IL
(Notes 1, 4, 5) -0.3 +0.8 V
Input Logic-High V
IH
Local power
(Notes 1,6)
+2.2
The lower
of 5.5 or
V
DD
+ 0.3
V
Parasite power +3.0
Sink Current I
L
V
I/O
= 0.4V 4.0 mA
Standby Current I
DDS
(Notes 7, 8) 750 1000 nA
Active Current I
DD
V
DD
= 5V (Note 9) 1 1.5 mA
DQ Input Current I
DQ
(Note 10) 5 µA
Drift (Note 11) ±0.2 °C
Absolute Maximum Ratings
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
DS18B20 Programmable Resolution
1-Wire Digital Thermometer
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