Data Sheet
Table 13. Truth Table (Positive Logic)
ADuM1310/ADuM1311
V Ix
Input 1
H
L
X
CTRL x
Input 2
X
X
H or
V DISABLE
State 3
L or NC
L or NC
H
V DDI
State 4
Powered
Powered
X
V DDO
State 5
Powered
Powered
Powered
V Ox
Output
H
L
H
Description
Normal operation, data is high.
Normal operation, data is low.
Inputs disabled. Outputs are in the default state determined by
NC
CTRL x .
X
L
H
X
Powered
L
Inputs disabled. Outputs are in the default state determined by
CTRL x .
X
H or
NC
X
Unpowered
Powered
H
Input unpowered. Outputs are in the default state determined by
CTRL x . Outputs return to input state within 1 μs of V DDI power
restoration. See the pin function descriptions (Table 11 and Table 12)
for more details.
X
L
X
Unpowered
Powered
L
Input unpowered. Outputs are in the default state determined by
CTRL x . Outputs return to input state within 1 μs of V DDI power
restoration. See the pin function descriptions (Table 11 and Table 12)
for more details.
X
X
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 11 and Table 12) for more
details.
1
2
3
4
5
V Ix and V Ox refer to the input and output signals of a given channel (A, B, or C).
CTRL x refers to the default output control signal on the input side of a given channel (A, B, or C).
Available only on the ADuM1310 .
V DDI refers to the power supply on the input side of a given channel (A, B, or C).
V DDO refers to the power supply on the output side of a given channel (A, B, or C).
Rev. I | Page 15 of 24
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