DS1337

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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 Range

See IPC/JEDEC J-STD-020A Specification

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.

RECOMMENDED DC OPERATING CONDITIONS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

1.8

4.0

V

Oscillator Voltage

1.3

4.0

V

SCL, SDA

Logic 1

INTA, SQW/INTB

5.5

V

Logic 0

-0.3

V

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage

(Note 1)

1

mA

I/O Leakage

(Note 2)

1

mA

(Note 2)

3

mA

Active Supply Current

(Note 3)

150

mA

Standby Current

(Notes 4, 5)

2

mA

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Timekeeping Current

(Oscillator Enabled)

(Notes 4, 6, 7)

600

nA

Data Retention Current

(Oscillator Disabled)

(Note 4)

50

nA

CRYSTAL SPECIFICATIONS*

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Nominal Frequency

32.768

kHz

Series Resistance

ESR

45

kΩ

Load Capacitance

6

pF

*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application Note 58: Crystal Considerations

for Dallas Real-Time Clocks for additional specifications.