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DS1338_11 Datasheet, PDF (2/16 Pages) Maxim Integrated Products – I2C RTC with 56-Byte NV RAM
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DS1338 I2C RTC with 56-Byte NV RAM
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground………………………………………………………..……..-0.3V to +6.0V
Operating Temperature Range…………………………………………………………………………..……-40°C to +85°C
Storage Temperature Range………………………………………………………………………………...-55°C to +125°C
Lead Temperature (soldering, 10s) ……….………………………………………………………………………. +260°C
Soldering Temperature (reflow) ……………………………………………………………………………………. +260°C
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
(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless
otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Logic 1
Logic 0
Power-Fail Voltage
VBAT Input Voltage
SYMBOL
VCC
VIH
CONDITIONS
DS1338-18
DS1338-3
DS1338-33
(Note 2)
VIL
VPF
VBAT
(Note 2)
DS1338-18
DS1338-3
DS1338-33
(Note 2)
MIN
1.71
2.7
3.0
0.7 x
VCC
-0.3
1.51
2.45
2.70
1.3
TYP
1.8
3.0
3.3
1.62
2.59
2.82
3.0
MAX
5.5
5.5
5.5
VCC +
0.3
+0.3 x
VCC
1.71
2.70
2.97
3.7
UNITS
V
V
V
V
V
DC ELECTRICAL CHARACTERISTICS
(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = TYP,
TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Input Leakage
I/O Leakage
SDA Logic 0 Output
SQW/OUT Logic 0 Output
Active Supply Current
(Note 5)
Standby Current (Note 6)
VBAT Leakage Current
(VCC Active)
ILI
ILO
IOLSDA
IOLSQW
ICCA
ICCS
IBATLKG
(Note 3)
(Note 4)
VCC > 2V; VOL = 0.4V
VCC < 2V; VOL = 0.2 x VCC
VCC > 2V; VOL = 0.4V
1.71V < VCC < 2V;
VOL = 0.2 x VCC
1.3V < VCC < 1.71V;
VOL = 0.2 x VCC
DS1338-18: VCC = 1.89V
DS1338-3: VCC = 3.30V
DS1338-33
VCC = 3.63V
VCC = 5.5V
DS1338-18: VCC = 1.89V
DS1338-3: VCC = 3.30V
DS1338-33
VCC = 3.63V
VCC = 5.5V
1
µA
1
µA
3.0
3.0
mA
3.0
mA
3.0
250
µA
75
150
110
200
120
200
µA
325
60
100
80
125
85
125
µA
200
25
100
nA
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