DS1302 Trickle-Charge Timekeeping Chip

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ABSOLUTE MAXIMUM RATINGS

Voltage Range on Any Pin Relative to Ground……………………………………………………………….-0.5Vto +7.0V

Operating Temperature Range, Commercial………………………………………………………………….0°C to +70°C

Operating Temperature Range, Industrial (IND)……………………………………………………………-40°C to +85°C

Storage Temperature Range……………………………………………………………………………..….-55°C to +125°C

Soldering Temperature (leads, 10 seconds)………………………………………………………………..………….260°C

Soldering Temperature (surface mount)………………………………………………..…….See IPC/JEDEC J-STD-020

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

(Notes 2, 10)

2.0

3.3

5.5

V

Logic 1 Input

(Note 2)

2.0

0.3

V

-0.3

+0.3

Logic 0 Input

(Note 2)

-0.3

+0.8

V

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage

(Notes 5, 13)

85

500

µA

I/O Leakage

(Notes 5, 13)

85

500

µA

1.6

(Note 2)

2.4

V

0.4

(Note 2)

0.4

V

0.4

Active Supply Current

(Oscillator Enabled)

CH = 0

(Notes 4, 11)

1.2

mA

0.2

0.3

Timekeeping Current

(Oscillator Enabled)

CH = 0

(Notes 3, 11,13)

0.45

1

µA

1

100

1

100

Standby Current (Oscillator

Disabled)

IND

CH = 1

(Notes 9, 11, 13)

5

200

nA

0.425

Active Supply Current

(Oscillator Enabled)

CH = 0

(Notes 4, 12)

1.28

mA

25.3

Timekeeping Current

(Oscillator Enabled)

CH = 0

(Notes 3, 12)

81

µA

CH = 1

(Notes 9, 12)

25

Standby Current (Oscillator

Disabled)

80

µA

R1

2

R2

4

Trickle-Charge Resistors

R3

8

k

Ω

Trickle-Charge Diode Voltage

Drop

0.7

V