DS1844
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
-1.0V to +7.0V
-40°C to +85°C
-55°C to +125°C
260°C 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
PARAMETER
Supply Voltage
Resistor Inputs
SYMBOL
V
CC
L,H,W
CONDITION
MIN
+2.7
GND
-0.5
TYP
MAX
+5.5
V
CC
+0.5
(-40°C to +85°C)
UNITS
V
V
NOTES
1
1,12
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Current Active
Input Leakage
Wiper Resistance
Wiper Current
Input Logic 1
Input Logic 0
Input Logic levels A0, A1,
A2
Input Current each I/O pin
Standby Current
3V
5V
Low Level Output Voltage
(SDA)
I/O Capacitance
Pulse width of spikes which
must be suppressed by the
input filter
D
OUT
Output @ 2.4V
D
OUT
Output @ 0.4V
I
stby
(-40°C to +85°C; V
CC
=2.7V to 5.5V)
MIN
-1
250
0.7V
CC
GND-0.5
SYMBOL
I
CC
I
LI
R
W
I
W
V
IH
V
IL
CONDITION
TYP
MAX
2
+1
500
1
V
CC
+0.5
0.3V
CC
V
CC
+0.5
0.3V
CC
+10
UNITS
mA
µA
Ohms
mA
V
V
V
µA
NOTES
19
1,2
1,2
11
Input Logic 1
Input Logic 0
0.4<V
I/O
<0.9V
DD
0.7V
CC
GND-0.5
-10
15
25
4
40
0.4
0.6
10
Fast Mode
0
50
µA
V
V
pF
ns
22
V
OL1
V
OL2
C
I/O
t
SP
3 mA sink current
6 mA sink current
0.0
0.0
I
OH
I
OL
-1.0
4
mA
mA
23,24
23,24
7 of 14
101999
DALLAS [ DALLAS SEMICONDUCTOR ]
