Real-Time Clocks

2

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ABSOLUTE MAXIMUM RATINGS

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.

Operating Temperature Range ...................................................

Commercial (noncondensing) .............................0°C to +70°C

Operating Temperature Range ...................................................

Industrial (noncondensing)...............................-40°C to +85°C

Storage Temperature Range

EDIP ..................................................................-40°C to +85°C

PDIP, SO, PLCC, TQFP ..................................-55°C to +125°C

Lead Temperature (soldering, 10s) .................................+260°C

(Note: EDIP is hand or wave-soldered only.)

Soldering Temperature (reflow)

PDIP, SO, PLCC............................................................+260°C

TQFP .............................................................................+245°C

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

(Note 3)

4.5

5.5

V

(Note 3)

2.5

4.0

V

Input Logic 1

(Note 3)

2.2

0.3

V

Input Logic 0

(Note 3)

-0.3

+0.8

V

(Note 4)

15

mA

(Note 5)

mA

Input Leakage

-1.0

+1.0

µA

I/O Leakage

(Note 6)

-1.0

+1.0

µA

Input Current

(Note 7)

-1.0

+500

µA

Output at 2.4V

(Note 3)

-1.0

mA

Output at 0.4V

(Note 3)

4.0

mA

Power-Fail Voltage

(Note 3)

4.0

4.25

4.5

V

VRT Trip Point

1.3

V