DS1374U-18 datasheet(3/18 Pages) MAXIM

Part #	DS1374U-18

Description	I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

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Manufacturer	MAXIM [Maxim Integrated Products]

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I2C, 32-Bit Binary Counter Watchdog RTC with

Trickle Charger and Reset Input/Output

_____________________________________________________________________

3

DC ELECTRICAL CHARACTERISTICS

(VCC = VCC(MIN) to VCC(MAX) , TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

R1

(Note 6)

250

R2

(Note 7)

2000

Trickle-Charge Current-Limiting

Resistors

R3

(Note 8)

4000

Input Leakage

ILI

(Note 9)

-1

+1

I/O Leakage

ILO

(Note 10)

-1

+1

RST Pin I/O Leakage

ILORST

(Note 11)

-200

+1

μA

SDA Logic 0 Output (VOL = 0.4V)

IOLSDA

3.0

mA

VCC > 2V; VOL = 0.4V

3.0

1.71V < VCC < 2V; VOL = 0.2 VCC

3.0

mA

RST, SQW, and INT Logic 0

Outputs (Note 12)

IOL1

1.3V < VCC < 1.71V; VOL = 0.2 VCC

250

μA

DS1374-18

75

150

DS1374-3

110

200

Active Supply Current

(Notes 12, 13)

ICCA

DS1374-33

180

300

μA

DS1374-18

60

100

DS1374-3

80

125

Standby Current (Notes 12, 14)

ICCS

DS1374-33

115

175

μA

VBACKUP Leakage Current

(VBACKUP = 3.7V)

IBACKUPLKG

100

nA

DC ELECTRICAL CHARACTERISTICS

(VCC = 0V, VBACKUP = 3.7V, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MAX

TYP

MAX

UNITS

VBACKUP Current (OSC ON);

SQW OFF

IBKOSC1

(Note 15)

400

700

nA

VBACKUP Current (OSC ON);

SQW ON (32kHz)

IBKOSC2

(Notes 15, 16)

600

1000

nA

VBACKUP Data-Retention Current

(OSC OFF)

IBACKUPDR

25

100

nA

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