DS1338_08 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

Soldering Temperature

……………...…….See precautions in the Handling, PCB 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

(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 3.3V,

TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DS1338-18

1.71

1.8

1.89

DS1338-3

2.7

3.0

3.3

Supply Voltage

VCC

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

DS1338-18

1.51

1.62

1.71

DS1338-3

2.45

2.59

2.70

Power-Fail Voltage

VPF

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 = 3.3V,

TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage

ILI

(Note 3)

A

I/O Leakage

ILO

(Note 4)

A

VCC > 2V; VOL = 0.4V

3.0

SDA Logic 0 Output

IOLSDA

VCC < 2V; VOL = 0.2 x VCC

3.0

VCC > 2V; VOL = 0.4V

3.0

1.71V < VCC < 2V;

VOL = 0.2 VCC

3.0

SQW/OUT Logic 0 Output

IOLSQW

1.3V < VCC < 1.71V;

VOL = 0.2 VCC

250

A

DS1338-18

150

DS1338-3

110

200

VCC ≤ 3.63V

120

200

Active Supply Current

(Note 5)

ICCA

DS1338-33

3.63V < VCC ≤

5.5V

325

A

DS1338-18

100

DS1338-3

125

VCC ≤ 3.63V

125

Standby Current (Note 6)

ICCS

DS1338-33

3.63V < VCC ≤

5.5V

200

A

VBAT Leakage Current

(VCC Active)

IBATLKG

100

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