DS1338_11 datasheet(2/16 Pages) MAXIM

2 / 16 page

DS1338 I

2C RTC with 56-Byte NV RAM

2 of 16

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

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

VCC

DS1338-18

1.71

1.8

5.5

DS1338-3

2.7

3.0

5.5

DS1338-33

3.0

3.3

5.5

Logic 1

VIH

(Note 2)

0.7 x

VCC

VCC +

0.3

Logic 0

VIL

(Note 2)

-0.3

+0.3 x

VCC

Power-Fail Voltage

VPF

DS1338-18

1.51

1.62

1.71

DS1338-3

2.45

2.59

2.70

DS1338-33

2.70

2.82

2.97

VBAT Input Voltage

VBAT

(Note 2)

1.3

3.0

3.7

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

ILI

(Note 3)

µA

I/O Leakage

ILO

(Note 4)

µA

SDA Logic 0 Output

IOLSDA

VCC > 2V; VOL = 0.4V

3.0

VCC < 2V; VOL = 0.2 x VCC

3.0

SQW/OUT Logic 0 Output

IOLSQW

VCC > 2V; VOL = 0.4V

3.0

1.71V < VCC < 2V;

VOL = 0.2 x VCC

3.0

1.3V < VCC < 1.71V;

VOL = 0.2 x VCC

250

µA

Active Supply Current

(Note 5)

ICCA

DS1338-18:

VCC = 1.89V

150

µA

DS1338-3:

VCC = 3.30V

110

200

DS1338-33

VCC = 3.63V

120

200

VCC = 5.5V

325

Standby Current (Note 6)

ICCS

DS1338-18:

VCC = 1.89V

100

µA

DS1338-3:

VCC = 3.30V

125

DS1338-33

VCC = 3.63V

125

VCC = 5.5V

200

VBAT Leakage Current

(VCC Active)

IBATLKG

100

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