DS1308 Datasheet, PDF (9/14 Pages) Dallas Semiconductor – 64 X 8 Serial Real Time Clock

ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
DS1307/1308
-0.5V to +7.0V
0°C to 70°C (-40°C to 85°C for industrial)
-55°C to +125°C
260°C for 10 seconds DIP (See NOTE 12)
See JPC/JEDEC Standard J-STD-020A for
Surface Mount Devices
* 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 DS1307/DS1308 is 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 DS1307/DS1308 are not exposed to
environmental stresses, such as burn-in, that some industrial applications require. Products which have
successfully passed through this series of environmental stresses are marked IND or N, denoting their
extended operating temperature and reliability rating. For specific reliability information on this product,
please contact the factory at [phone].
RECOMMENDED DC OPERATING CONDITIONS
(0°C to 70°C or -40°C to +85°C)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage
V_CC
4.5 5.0
5.5
V
1
Logic 1
Logic 0
V_IH
2.2
V_IL
-0.3
V_CC+0.3 V
1
+0.8
V
1
V_BAT Battery Voltage
V_BAT
2.0
3.5
V
1
DC ELECTRICAL CHARACTERISTICS
(0°C to 70°C or -40°C to +85°C; V_CC =4.5V to 5.5V)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
Input Leakage
I_LI
1
µA
10
I/O Leakage
I_LO
1
µA
11
Logic 0 Output
V_OL
Active Supply Current
I_CCA
0.4
V
2
1.5
mA
9
Standby Current
I_CCS
200
µA
3
Battery Current (OSC ON);
SQW/OUT OFF
I_BAT1
300 500
nA
4
Battery Current (OSC ON);
SQW/OUT ON (32 kHz)
I_BAT2
480 800
nA
4
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