ADuM1253

Ultra-Low-Power, I2C Isolator with

Unidirectional SCL, Extended VDD,

Idle-Bus Hot-Swap, and Low VOL

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Analog Devices | 3

8 Wide SOIC

Outline Number

21-100415

Land Pattern Number

90-100146

Junction-to-Ambient Thermal Resistance (θJA)

170°C/W

Junction-to-Case Top Thermal Resistance (θJC(TOP))

64°C/W

Junction-to-Board Thermal Resistance (θJB)

60.9°C/W

Junction-to-Case Top Thermal Characterization Parameter (ψJT)

12°C/W

Junction-to-Board Thermal Characterization Parameter (ψJB)

62°C/W

Moisture Sensitivity Level

3

For the latest package outline information and land patterns (footprints), go to www.analog.com/en/design-

center/packaging-quality-symbols-footprints/package-index.html. Note that a “+”, “#”, or “-” in the package code

indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.analog.com/en/technical-

articles/thermal-characterization-of-ic-packages.

Electrical Characteristics

(VDD1 - VGND1 = +1.71V to +5.5V, VDD2 - VGND2 = +1.71V to +5.5V, CL = 20pF, TA = -40°C to +125°C, unless otherwise noted (Note

1, Note 2). Typical values are at VDD1 - VGND1 = 3.3V, VDD2 - VGND2 = 3.3V, TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY

Supply Voltage

VDD1

Relative to GND1

1.71

5.5

V

VDD2

Relative to GND2

1.71

5.5

Undervoltage-Lockout

Threshold Side_

VUVLO_

VDD_ rising

1.48

1.6

1.65

V

Undervoltage-Lockout

Threshold Hysteresis

VUVLO_HYST

(Note 5)

30

mV

SUPPLY CURRENT (Note 2, Note 3)

Supply Current–Side 1

IDD1

VDD1 = VDD2 =

1.8V - 5V

SDA1/SCL1 =

VDD1

20

34

μA

SDA1/SCL1 =

400kHz square

wave

200

250

SDA1/SCL1 =

1MHz square wave

270

340

Supply Current—Side 2

IDD2

VDD1 = VDD2 =

1.8V - 5V

SDA2/SCL2 =

VDD2

21

35

μA

SDA2/SCL2 =

GND2

49

70

SDA2/SCL2 =

400kHz square

wave

84

110

SDA2/SCL2 =

1MHz square wave

146

180

LOGIC INPUTS AND OUTPUTS

Input High Voltage,

SDA1/SCL1

VIH1

Relative to GND1

0.52

0.56

0.62

V