ADuM7440/ADuM7441/ADuM7442

Rev. B | Page 8 of 20

ABSOLUTE MAXIMUM RATINGS

Table 17.

Parameter

Rating

−65°C to +150°C

−40°C to +105°C

−0.5 V to +7.0 V

Average Output Current per Pin3

−10 mA to +10 mA

−10 mA to +10 mA

−100 kV/µs to +100 kV/µs

1

given channel, respectively. See the PC Board Layout section.

2

See Figure 4 for maximum rated current values for various temperatures.

3

Refers to common-mode transients across the insulation barrier. Common-

mode transients exceeding the absolute maximum ratings may cause

latch-up or permanent damage.

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

ESD CAUTION

Table 18. Maximum Continuous Working Voltage1

Parameter

Max

Unit

Constraint

AC Voltage, Bipolar Waveform

420

V peak

50-year minimum lifetime

AC Voltage, Unipolar Waveform

Basic Insulation

420

V peak

50-year minimum lifetime

DC Voltage

Basic Insulation

420

V peak

50-year minimum lifetime

1

Refers to continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details.

Table 19. Truth Table (Positive Logic)

Description

H

Powered

Powered

H

Normal operation; data is high.

L

Powered

Powered

L

Normal operation; data is low.

X

Unpowered

Powered

H

Input unpowered. Outputs are in the default high state. Outputs return to

descriptions (Table 20 through Table 22) for more details.

X

Powered

Unpowered

Z

Output unpowered. Output pins are in high impedance state. Outputs

descriptions (Table 20 through Table 22) for more details.

1

2

3