adum3160 Analog Devices, Inc., adum3160 Datasheet - Page 9

• Manufacturer Part Number: adum3160
• Description: Full/low Speed 2.5 Kv Usb Digital Isolator Adum3160
• Manufacturer: Analog Devices, Inc.

Table 10. Truth Table, Control Signals, and Power (Positive Logic)
V
Input
H
L
L
H
X
X
X
1
H represents logic high input or output, L represents logic low input or output, X represents the don’t care logic input or output, and Z represents the high impedance
output state.
SPU
1
V
State
Active
Active
Active
Active
Z
X
Z
UD+
, V
1
UD−
V
State
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BUS1
, V
DD1
V
State
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Powered
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Unpowered
BUS2
, V
DD2
V
State
Active
Active
Active
Active
Z
Z
X
DD+
, V
1
DD−
Rev. A | Page 9 of 16
V
Input
H
H
H
H
L
X
X
PIN
1
V
Input
H
L
H
L
X
X
X
SPD
1
Description
Input and output logic set for full speed logic
convention and timing.
Input and output logic set for low speed logic
convention and timing.
Not allowed. V
value. The USB host detects communications error.
Not allowed. V
value. The USB host detects communications error.
Upstream Side 1 presents a disconnected state to
the USB cable.
When power is not present on V
data output drivers revert to high-Z within 32 bit times.
The downstream side initializes in the high-Z state.
When power is not present on the V
upstream side disconnects the pull-up and disables
the upstream drivers within 32 bit times.
SPU
SPU
and V
and V
SPD
SPD
must be set to the same
must be set to the same
DD1
, the downstream
ADuM3160
DD2
, the