DS12B887 Datasheet, PDF (11/16 Pages) Dallas Semiconductor – Real Time Clock

DS12B887
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
–0.3V to +7.0V
0°C to 70°C
–40°C to +70°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.
The Dallas Semiconductor DS12B887 built to the highest quality standards and manufactured for long term reliability.
All Dallas Semiconductor devices are made using the same quality materials and manufacturing methods. However,
standard versions of the DS12B887 are not exposed to environmental stresses, such as burn–in, that some industrial
applications require. For specific reliability information on this product, please contact the factory in Dallas at (214)
450–0448.
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
SYMBOL MIN
Power Supply Voltage
Input Logic 1
Input Logic 0
V_CC
4.5
V_IH
2.2
V_IL
-0.3
DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Power Supply Current
Input Leakage
I/O Leakage
Output @ 2.4V
Output @ 0.4V
Write Protect Voltage
I_CC1
I_IL
-1.0
I_LO
-1.0
I_OH
-1.0
I_OL
V_TP
4.0
CAPACITANCE
PARAMETER
Input Capacitance
Output Capacitance
SYMBOL MIN
C_IN
C_OUT
(0°C to 70°C)
TYP
MAX
UNITS NOTES
5.0
5.5
V
1
V_CC+0.3
V
1
+0.8
V
1
(0°C to 70°C; V_CC = 4.5 to 5.5V)
TYP
MAX
UNITS NOTES
7
15
mA
2
+1.0
mA
+1.0
mA
3
mA
1,4
4.0
mA
1
4.25
4.5
V
(t_A = 25°C)
TYP
MAX
UNITS NOTES
5
pF
7
pF
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