DS1621
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
–0.5V to +7.0V
–55° to +125°
C
C
–55° to +125°
C
C
260° for 10 seconds
C
* This is a stress rating 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.
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
Supply Voltage
SYMBOL
V
DD
MIN
2.7
TYP
MAX
5.5
UNITS
V
NOTES
1
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Thermometer Error
SYMBOL
T
ERR
CONDITION
0°C to 70°C
-55°C to + 0°C
and
70°C to 125°C
(-55°C to +125°C; V
DD
=2.7V to 5.5V)
MIN
TYP
MAX
±�½
UNITS
°C
NOTES
11
See Typical Curve
0.5
0.7 V
DD
0.3 V
DD
V
DD
+0.5
V
V
Low Level Input
Voltage
High Level Input
Voltage
Pulse width of
spikes which must
be suppressed by
the input filter
Low Level Output
Voltage
V
IL
V
IH
t
SP
Fast Mode
0
50
ns
V
OL1
V
OL2
Input Current each
I/O Pin
I/O Capacitance
3 mA Sink
Current
6 mA Sink
Current
0.4<V
I/O
<0.9V
DD
0
0
-10
0.4
0.6
10
10
V
V
µA
pF
2
C
I/O
Temperature
Conversion
E
2
Write
Communi-
cation Only
Active Supply
Current
Standby Supply
Current
Thermostat Output
(T
OUT
) Output
Voltage
I
CC
1000
400
100
1
µA
3, 4
I
STBY
V
OH
V
OL
1 mA Source
4 mA Sink
2.4
µA
V
V
3, 4
0.4
13 of 16
102299
DALLAS [ DALLAS SEMICONDUCTOR ]
