Datasheet

Voltage Range on Any Pin Relative to Ground ....-0.5V to +6.0V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C) .............. 470.6mW
3-Pin TO-92 (derate 6.3mW/°C above +70°C) ............ 500mW
Operating Temperature Range ......................... -55°C to +125°C
Storage Temperature Range ............................ -55°C to +125°C
Lead Temperature (soldering, 10s) .................................+260°C
Soldering Temperature (reflow)
Lead(Pb)-free...............................................................+260°C
Containing lead(Pb) ..................................................... +240°C
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 pul-
lup is equal to V
PU
. In order to meet the V
IH
spec of the DS18S20, the actual supply rail for the strong pullup transistor
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.
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, VILMAX 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.
(V
DD
= 3.0V to 5.5V, T
A
= -55°C to +125°C, unless otherwise noted.)
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
(Note 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
-55°C to +125°C ±2
Input Logic-Low V
IL
(Note 1, 4, 5) -0.3 +0.8 V
Input Logic-High V
IH
Local Power
(Note 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 (Note 1) 4.0 mA
Standby Current I
DDS
(Note 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
DS18S20 High-Precision 1-Wire Digital Thermometer
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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