DS18S20 Maxim Integrated Products, DS18S20 Datasheet - Page 19

• Manufacturer Part Number: DS18S20
• Description: Board Mount Temperature Sensors
• Manufacturer: Maxim Integrated Products

Specifications of DS18S20

• Full Temp Accuracy: +/- 2 C
• Package / Case: TO-92
• Digital Output - Bus Interface: Serial (1-Wire)
• Digital Output - Number Of Bits: 9 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Output Type: Digital
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
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.
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
NOTES:
1) All voltages are referenced to ground.
2) The Pullup Supply Voltage specification assumes that the pullup device is ideal, and therefore the
3) See typical performance curve in Figure 17.
4) Logic-low voltages are specified at a sink current of 4mA.
5) To guarantee a presence pulse under low voltage parasite power conditions, V
6) Logic-high voltages are specified at a source current of 1mA.
7) Standby current specified up to +70°C. Standby current typically is 3µA at +125°C.
8) To minimize I
9) Active current refers to supply current during active temperature conversions or EEPROM writes.
10) DQ line is high (“high-Z” state).
11) Drift data is based on a 1000-hour stress test at +125°C with V
Supply Voltage
Pullup Supply
Voltage
Thermometer
Error
Input Logic-Low
Input Logic-High
Sink Current
Standby Current
Active Current
DQ Input Current
Drift
PARAMETER
high level of the pullup is equal to V
supply rail for the strong pullup transistor must include margin for the voltage drop across the
transistor when it is turned on; thus: V
reduced to as low as 0.5V.
V
DD
– 0.3V ≤ DQ ≤ V
DDS
, DQ should be within the following ranges: GND ≤ DQ ≤ GND + 0.3V or
SYMBOL
V
I
V
t
DD
V
V
I
I
ERR
DDS
I
DD
DQ
DD
PU
L
IH
IL
.
Local Power
Parasite Power
Local Power
-10°C to +85°C
-55°C to +125°C
Local Power
Parasite Power
V
V
CONDITIONS
I/O
DD
PU
= 0.4V
= 5V
PU_ACTUAL
. In order to meet the V
19 of 22
= V
MIN
+3.0
+3.0
+3.0
+2.2
+3.0
-0.3
PU_IDEAL
4.0
(-55°C to +125°C; V
TYP
±0.2
750
+ V
1
5
IH
DD
spec of the DS18B20, the actual
TRANSISTOR
= 5.5V.
The lower of
V
DD
MAX
1000
+5.5
+5.5
±0.5
+0.8
V
5.5
1.5
±2
or
DD
+ 0.3
.
ILMAX
DD
UNITS NOTES
=3.0V to 5.5V)
may have to be
mA
mA
µA
nA
°C
°C
V
V
V
V
DS18B20
1,4,5
1, 6
1,2
7,8
10
11
1
3
1
9