DS1339_06 datasheet(2/19 Pages) MAXIM

2 / 19 page

DS1339 I

2C Serial Real-Time Clock

2 of 19

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

MIN

TYP

MAX

UNITS

DS1339-2

1.8

2.0

2.2

DS1339-3

2.7

3.0

3.3

Supply Voltage

VCC

DS1339-33

2.97

3.3

5.5

Backup Supply Voltage

VBACKUP

1.3

3.0

3.7

Pullup Resistor Voltage (SQW/

INT,

SDA, SCL), VCC = 0V

VPU

5.5

Logic 1

VIH

0.7 x

VCC

VCC +

0.3

Logic 0

VIL

-0.3

+0.3 x

VCC

DS1339-2

1.58

1.70

1.80

DS1339-3

2.45

2.59

2.70

Power-Fail Voltage

VPF

DS1339-33

2.70

2.85

2.97

DC ELECTRICAL CHARACTERISTICS

(VCC = MIN to MAX, TA = -40°C to +85°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage

ILI

(Note 2)

µA

I/O Leakage

ILO

(Note 3)

µA

Logic 0 Out

VOL = 0.4V; VCC > VCC MIN (-3, -33);

VCC ≥ 2.0V (-2)

IOL

(Note 3)

Logic 0 Out

VOL = 0.2 (VCC);

1.8V < VCC < 2.0V (DS1339-2)

IOL

(Note 3)

Logic 0 Out

VOL = 0.2 (VCC);

1.3V < VCC < 1.8V (DS1339-2)

IOL

(Note 3)

250

µA

VCC Active Current

ICCA

(Note 4)

450

µA

VCC ≤ 3.63V

150

VCC Standby Current (Note 5)

ICCS

3.63V < VCC ≤ 5.5V

200

µA

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