ADuM7440/ADuM7441/ADuM7442 Data Sheet
Rev. D | Page 8 of 20
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C, unless otherwise noted.
Table 17.
Parameter Rating
Storage Temperature (T
ST
) Range −65°C to +150°C
Ambient Operating Temperature (T
A
) −40°C to +105°C
Supply Voltages (V
DD1
, V
DD2
) −0.5 V to +7.0 V
Input Voltages (V
IA
, V
IB
, V
IC
, V
ID
)
1, 2
−0.5 V to V
DDI
+ 0.5 V
Output Voltages (V
OA
, V
OB
, V
OC
, V
OD
)
1, 2
−0.5 V to V
DDO
+ 0.5 V
Average Output Current per Pin
3
Side 1 (I
O1
) −10 mA to +10 mA
Side 2 (I
O2
) −10 mA to +10 mA
Common-Mode Transients
3
−100 kV/μs to +100 kV/μs
1
V
DDI
and V
DDO
refer to the supply voltages on the input and output sides of a
given channel, respectively. See the Printed Circuit Board (PCB) 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 at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION
Table 18. Maximum Continuous Working Voltage
1
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)
V
Ix
Input
1
V
DDI
State
2
V
DDO
State
3
V
Ox
Output
1
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
input state within 1 μs of V
DDI
power restoration. See the pin function
descriptions (Table 20 through Table 22) for more details.
X Powered Unpowered Z
Output unpowered. Output pins are in high impedance state. Outputs
return to input state within 1 μs of V
DDO
power restoration. See the pin function
descriptions (Table 20 through Table 22) for more details.
1
V
Ix
and V
Ox
refer to the input and output signals of a given channel (A, B, C, or D).
2
V
DDI
refers to the power supply on the input side of a given channel (A, B, C, or D).
3
V
DDO
refers to the power supply on the output side of a given channel (A, B, C, or D).
