DS1721
 
 
 
14 of 17
ABSOLUTE MAXIMUM RATINGS*
Voltage on VDD, Relative to Ground
-0.3V to +6.0V
Voltage on any other pin, Related to Ground
-0.3V to +6.0V
Operating Temperature
-55癈 to +125癈
Storage Temperature
-55癈 to +125癈
Soldering Temperature
260癈 for 10 seconds
 
*   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 
 
(-55癈 to +125癈; 2.7V ?V
DD
 ?5.5V)
PARAMETER
SYMBOL
CONDITION
MIN    TYP    MAX    UNITS    NOTES
Supply Voltage
V
DD
 
 
2.7
 
5.5
V
1
 
DC ELECTRICAL CHARACTERISTICS      (-55?/SPAN>C to +125?/SPAN>C; 2.7V ?/SPAN> V
DD
 ?5.5V)
PARAMETER
SYMBOL
CONDITION
MIN    TYP    MAX    UNITS    NOTES
Input Logic High
V
IH
 
 
0.7
V
DD
 
 
V
DD
 
+0.3
V
1
Input Logic Low
V
IL
 
 
-0.5
 
0.3
V
DD
 
V
1
V
OL1
 
3 mA sink
current
0
 
0.4
V
1
SDA Output Logic
Low Voltage
V
OL2
 
6 mA sink
current
0
 
0.6
V
1
V
OH
 
1 mA source
current
2.4
 
 
V
1
T
OUT
 Output Logic
Voltage
V
OL
 
4 mA sink
current
 
 
0.4
V
1
Input Current Each
I/O Pin
 
0.4V ?V
I/O
 
?0.9 V
DD
 
-10
 
+10
2
I/O Capacitance
C
I/O
 
 
 
 
10
pF
 
Standby Current
I
DD1
 
 
 
 
0.8
3, 4
Temperature
Conversions,
-55癈 to +85癈
+85癈 to +125癈
 
 
 
 
1000
1250
3, 4
Communication
only
 
 
110
3, 4
Active Current
I
DD
 
EEPROM Write
 
 
400
3,4
 
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