DS1501/DS1511 Y2KC Watchdog Real-Time Clocks

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ABSOLUTE MAXIMUM RATINGS

Voltage Range on Any Pin Relative to Ground……………………………………………………..……....-0.5V to +6.0V

Operating Temperature Range, DS1501

Operating Temperature Range, DS1511……………………………………………………………….……..0°C to +70°C

Storage Temperature Range, DS1501

Storage Temperature Range, DS1511………………………………………………………………….…..-40°C to +70°C

Soldering Temperature (DIP, EDIP Module)…..………...….+260°C lead temperature for 10 seconds (max) (Note 2)

Soldering Temperature (SO, TSOP)

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

5V (Y)

4.5

5.0

5.5

Power Supply Voltage (Note 3)

3.3V (W)

3.0

3.3

3.6

V

Y

2.2

Logic 1 Voltage All Inputs (Note 3)

W

2.0

V

Pullup Voltage,

IRQ, PWR, and

RST Outputs (Note 3)

5.5

V

Y

-0.3

+0.8

Logic 0 Voltage All Inputs (Note 3)

W

-0.3

+0.6

V

Battery Voltage (Note 3)

2.5

3.0

3.7

V

Y

2.5

3.0

5.3

Auxiliary Battery Voltage (Note 3)

W

2.5

3.0

3.7

V

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Y

15

Active Supply Current (Note 4)

W

10

mA

Y

5

TTL Standby Current (

CE = V

W

4

mA

Y

5

CMOS Standby Current

(

CE = V

W

4

mA

Input Leakage Current (Any Input)

-1

+1

μA

Output Leakage Current (Any Output)

-1

+1

μA

Output Logic 1 Voltage

(Note 3)

2.4

V

(Note 3)

0.4

V

7.0mA,

PWR and RST)

(Notes 3, 5)

0.4

V

Y

2.0

Battery Low, Flag Trip Point (Note 2)

W

1.9

V

Y

4.20

4.50

Power-Fail Voltage (Note 2)

W

2.75

2.97

V

Battery Switchover Voltage (Notes 3, 6)

V

Battery Leakage Current

100

nA