DS12885/DS12887/DS12887A/DS12C887/DS12C887A
Real-Time Clocks
2
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ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage Range on VCC Pin Relative to Ground .....-0.3V to +6.0V
Operating Temperature Range ...................................................
Commercial (noncondensing) .............................0°C to +70°C
Operating Temperature Range ...................................................
Industrial (noncondensing)...............................-40°C to +85°C
Storage Temperature Range
EDIP ..................................................................-40°C to +85°C
PDIP, SO, PLCC, TQFP ..................................-55°C to +125°C
Lead Temperature (soldering, 10s) .................................+260°C
(Note: EDIP is hand or wave-soldered only.)
Soldering Temperature (reflow)
PDIP, SO, PLCC............................................................+260°C
TQFP .............................................................................+245°C
DC ELECTRICAL CHARACTERISTICS
(VCC = +4.5V to +5.5V, TA = over the operating range, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
VCC
(Note 3)
4.5
5.5
V
VBAT Input Voltage
VBAT
(Note 3)
2.5
4.0
V
Input Logic 1
VIH
(Note 3)
2.2
VCC +
0.3
V
Input Logic 0
VIL
(Note 3)
-0.3
+0.8
V
VCC Power-Supply Current
ICC1
(Note 4)
15
mA
VCC Standby Current
ICCS
(Note 5)
mA
Input Leakage
IIL
-1.0
+1.0
A
I/O Leakage
IOL
(Note 6)
-1.0
+1.0
A
Input Current
IMOT
(Note 7)
-1.0
+500
A
Output at 2.4V
IOH
(Note 3)
-1.0
mA
Output at 0.4V
IOL
(Note 3)
4.0
mA
Power-Fail Voltage
VPF
(Note 3)
4.0
4.25
4.5
V
VRT Trip Point
VRTTRIP
1.3
V
