Low-Current, SPI-Compatible

Real-Time Clock

2

Maxim Integrated

DS1347

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

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.

Current into Any Pin..........................................................±20mA

°C)

TDFN (derate 24.4mW/

°C above +70°C)...................1.375mW

Junction Temperature .....................................................+150

°C

Storage Temperature Range…………………… -55

°C to +125°C

ESD Protection (All Pins, Human Body Model)................±2000V

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

°C

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

°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage

Range

2

5.5

V

0.1

Active Supply Current

(Note 2)

0.25

mA

0.35

0.7

0.35

0.7

Timekeeping Supply

Current (Note 3)

0.4

0.8

μA

SPI DIGITAL INPUTS (SCLK, DIN,

CS)

1.4

Input High Voltage

2.2

V

0.6

Input Low Voltage

0.8

V

Input Leakage Current

-0.1

+0.1

μA

Input Capacitance

(Note 4)

10

pF

SPI DIGITAL OUTPUT (DOUT)

Output Leakage Current

-0.1

+0.1

μA

Output Capacitance

(Note 4)

15

pF

0.4

Output Low Voltage

0.4

V

1.8

Output High Voltage

4.5

V