ADUM4160_09 AD [Analog Devices], ADUM4160_09 Datasheet - Page 9

• Manufacturer Part Number: ADUM4160_09
• Description: Full/Low Speed USB Digital Isolator
• Manufacturer: AD [Analog Devices]

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
V
State
Powered
Powered
Powered
Powered
Powered
Unpowered X
Powered
BUS1
, V
DD1
V
V
State
Active
Active
Active
Active
Z
Z
UD+
UD−
,
V
Input
H
L
H
L
X
X
X
SPD
V
State
Powered
Powered
Powered
Powered
Powered
Powered
Unpowered
BUS2
, V
DD2
V
V
State
Active
Active
Active
Active
Z
Z
X
DD+
DD−
Rev. A | Page 9 of 16
,
V
Input
H
H
H
H
L
X
X
1
PIN
Notes
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
USB host detects communications error.
Not allowed: V
USB host detects communications error.
Upstream Side 1 presents a disconnected state to the USB
cable.
When power is not present on V
output drivers revert to high-Z within 32 bit times. The
downstream side initializes in high-Z state.
When power is not present on the V
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 value.
must be set to the same value.
DD1
, the downstream data
DD2
, the upstream side
ADuM4160