DS1341_12 datasheet(2/16 Pages) MAXIM

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Low-Current I2C RTCs for High-ESR Crystals

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 absolute

maximum rating conditions for extended periods may affect device reliability.

Voltage Range on Any Pin Relative to Ground....-0.3V to +6.0V

Operating Temperature Range.......................... -40NC to +85NC

Junction Temperature Maximum.....................................+150NC

Storage Temperature Range............................ -55NC to +125NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

DC ELECTRICAL CHARACTERISTICS

(VCC = +1.8V to +5.5V, TA = -40NC to +85NC, unless otherwise noted.) (Note 2)

ABSOLUTE MAXIMUM RATINGS

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

SOP

Junction-to-Ambient Thermal Resistance (BJA) .....206.3NC/W

Junction-to-Case Thermal Resistance (BJC) ...............42NC/W

TDFN

Junction-to-Ambient Thermal Resistance (BJA) ..........41NC/W

Junction-to-Case Thermal Resistance (BJC) .................8NC/W

PACKAGE THERMAL CHARACTERISTICS (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range

VCC

Full operation (Note 3)

1.8

5.5

VCCT

Timekeeping (Notes 3, 4)

1.3

5.5

Minimum Timekeeping Voltage

VCCTMIN

TA = +25NC (Notes 3, 4)

1.15

1.3

Timekeeping Current: DS1341

CLKIN = GND or CLKIN = VCC

(Note 4)

ICCT

VCC = +3.0V, EGFIL = 0, DOSF = 1

220

500

VCC = +5.5V

250

600

VCC = +3.0V, EGFIL = 1, DOSF = 0

280

560

VCC = +5.5V

320

700

Timekeeping Current: DS1342

CLKIN = GND or CLKIN = VCC

(Note 4)

ICCT

VCC = +3.0V, EGFIL = 0, DOSF = 1

250

600

VCC = +5.5V

280

700

VCC = +3.0V, EGFIL = 1, DOSF = 0

310

660

VCC = +5.5V

350

800

Logic 1 Input

VIH

(Note 2)

0.7 x

VCC

VCC +

0.3

Logic 0 Input

VIL

(Note 2)

-0.3

0.3 x

VCC

Input Leakage

(SCL, CLKIN/INTA)

ILI

ECLK = 1, VIN = 0V to VCC

-0.1

+0.1

Output Leakage

(CLKIN/INTA, SQW/INTB)

ECLK = A1IE = A2IE = 0

-1.0

+1.0

Output Logic 1

VOH = +1.0V (SQW /INTB)

IOH

VCC R 1.8V, INTCN = 0

-3.0

VCC R 1.3V, INTCN = 0

-250

Output Logic 0

VOL = +0.4V (SDA, CLKIN/INTA,

SQW/INTB)

IOL

VCC R 1.8V

3.0

VCC R 1.3V (Note 5)

250

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