DS1339 I2C Serial Real-Time Clock
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground………………………………………………………………-0.3V to +6.0V
Operating Temperature Range…(Noncondensing)….…………………………………………………….-40°C to +85°C
Storage Temperature Range………………………………………………………………………………..-55°C to +125°C
Soldering Temperature Range………….See precautions in the Handling, PC Board Layout, and Assembly section.
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 the absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED DC OPERATING CONDITIONS
(TA = -40°C to +85°C) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
DS1339-2
MIN
1.8
TYP
2.0
MAX
2.2
UNITS
DS1339-3
2.7
3.0
3.3
Supply Voltage
VCC
V
DS1339-33
2.97
1.3
3.3
3.0
3.63
3.7
Backup Supply Voltage
VBACKUP
VPU
V
V
Pullup Resistor Voltage (SQW/INT,
5.5
SDA, SCL), VCC = 0V
0.7 x
VCC
VCC
+
Logic 1
Logic 0
VIH
VIL
V
V
0.5
+0.3 x
VCC
-0.5
DS1339-2
DS1339-3
DS1339-33
1.58
2.45
2.70
1.70
2.59
2.85
1.80
2.70
2.97
Power-Fail Voltage
VPF
V
DC ELECTRICAL CHARACTERISTICS
(VCC = MIN to MAX, TA = -40°C to +85°C.) (Note 1)
PARAMETER
Input Leakage
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ILI
ILO
(Note 2)
(Note 3)
1
1
ꢀA
ꢀA
I/O Leakage
Logic 0 Out
V
OL = 0.4V; VCC > VCC MIN (-3, -33);
IOL
IOL
IOL
(Note 3)
(Note 3)
(Note 3)
3
3
mA
mA
ꢀA
V
CC ≥ 2.0V (-2)
Logic 0 Out
V
OL = 0.2 (VCC);
1.8V < VCC < 2.0V (DS1339-2)
Logic 0 Out
VOL = 0.2 (VCC);
250
1.3V < VCC < 1.8V (DS1339-2)
VCC Active Current
ICCA
ICCS
(Note 4)
(Note 5)
450
150
ꢀA
ꢀA
VCC Standby Current
80
2 of 18
DALLAS [ DALLAS SEMICONDUCTOR ]
