ISL12008 I2C Real Time Clock with Battery Backup

FN6690 Rev 1.00

Page 3 of 19

Sep 26, 2008

Absolute Maximum Ratings

Thermal Information

Voltage on VDD, VBAT, SCL, SDA, and FT/OUT Pins

(Respect to GND). . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6.5V

Voltage on X1 and X2 Pins

(Respect to GND)

VDD Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD + 0.5

VBAT Mode . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VBAT + 0.5

Thermal Resistance (Typical, Note 1) . . . . . . . . . . . . . . .

JA (°C/W)

8 Lead SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and

result in failures not covered by warranty.

NOTE:

1.

JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

DC Operating Characteristics – RTC Temperature = -40°C to +85°C. Recommended Operating Conditions, unless

otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

(Note 8)

TYP

(Note 5)

MAX

(Note 8)

UNITS

NOTES

VDD

Main Power Supply

2.7

5.5

V

VBAT

Battery Supply Voltage

1.8

5.5

V

IDD1

Supply Current

VDD = 5V

2.8

6

µA

2, 3

VDD = 3V

1.6

4

µA

IDD2

Supply Current With I2C Active

VDD = 5V

40

120

µA

2, 3

IDD3

Supply Current (Low Power Mode)

VDD = 5V, LPMODE = 1

2.3

5

µA

2

IBAT

Battery Supply Current

VBAT = 3V, +25°C

800

950

nA

2

ILI

Input Leakage Current on SCL

-1

0.1

+1

µA

ILO

I/O Leakage Current on SDA

-1

0.1

+1

µA

VTRIP

VBAT Mode Threshold

2.3

2.6

2.9

V

VTRIPHYS

VTRIP Hysteresis

36

mV

6

VBATHYS

VBAT Hysteresis

53

mV

6

FT/OUT

VOL

Output Low Voltage

VDD = 5V

IOL = 3mA

0.02

0.4

V

VDD = 2.7V

IOL = 1mA

0.02

0.4

V

Power-Down Timing

Temperature = -40°C to +85°C. Recommended Operating Conditions unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

(Note 8)

TYP

(Note 5)

MAX

(Note 8)

UNITS

NOTES

VDD SR-

VDD Negative Slewrate

5V/ms

4

Serial Interface Specifications Recommended Operating Conditions. Unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

(Note 8)

TYP

(Note 5)

MAX

(Note 8)

UNITS NOTES

SERIAL INTERFACE SPECS

VIL

SDA and SCL Input Buffer LOW Voltage

-0.3

0.3 x VDD

V

VIH

SDA and SCL Input Buffer HIGH Voltage

0.7 x VDD

VDD + 0.3

V

Hysteresis SDA and SCL Input Buffer Hysteresis

0.05 x

VDD

V

6, 7

VOL

SDA Output Buffer LOW Voltage, Sinking 3mA

0

0.02

0.4

V

Cpin

SDA and SCL Pin Capacitance

TA = +25°C, f = 1MHz, VDD = 5V,

VIN = 0V, VOUT = 0V

10

pF

6, 7