1 Features
• Compliant to USB 2.0
• Supports low speed (1.5 Mbps), full speed (12
Mbps) and high speed (480 Mbps) signaling
• Does not need external crystal or clock input
• Automatic speed and connection detection
• Supports L1 (sleep) and L2 (suspend) low-power
states
• Programmable equalization to compensate board
trace loss in high speed mode
• CDP advertising on downstream side
• Supply OK indication on opposite side
• Supports automatic role reversal for USB On-The-
Go (OTG) and Type-C® Dual Role Port (DRP)
designs
• High CMTI: 100 kV/μs
• ±8 kV IEC 61000-4-2 contact discharge protection
across isolation barrier
• VBUS voltage range: 4.25 V to 5.5 V
– 3.3 V and 1.8 V internal LDOs
• Meets CISPR32 class B emissions limits
• Ambient temperature range: –40°C to +125°C
• Small footprint 28-SSOP package
• Safety-related certifications:
– 7071-VPK VIOTM and 2121-VPK VIORM
(Reinforced) per DIN EN IEC 60747-17 (VDE
0884-17)
– 5000-VRMS isolation for 1 minute per UL 1577
– IEC 62368-1, IEC 60601-1 and IEC 61010-1
certifications
– CQC, TUV and CSA certifications

2 Applications
• USB Hub, Host, Peripheral and Cable Isolation
• Medical
• Factory automation
• Motor drives
• Grid infrastructure
• Power delivery
• USB Audio

3 Description
ISOUSB211-Q1 is a galvanically-isolated USB 2.0
compliant repeater supporting low speed (1.5 Mbps),
full speed (12 Mbps) and high speed (480 Mbps)
signaling rates. The device supports automatic
connect and speed detection, reflection of pull-ups/
pull-downs, and link power management allowing
drop-in USB hub, host, peripheral and cable isolation.
The device also supports automatic role reversal
- if after disconnect, a new connect is detected
on the Upstream facing port, then the Upstream
and Downstream port definitions are reversed.
This feature enables the device to support USB
On-The-Go (OTG) and Type-C Dual Role Port
(DRP) implementations. The ISOUSB211-Q1 has
inbuilt programmable equalization to cancel signal
loss caused by board traces, which helps in
meeting USB2.0 high-speed TX and RX eye-diagram
templates. This device uses a silicon dioxide (SiO2)
insulation barrier with a withstand voltage of up to
5000 VRMS and a working voltage of 1500 VRMS. Used
in conjunction with isolated power supplies, the device
protects against high voltage, and prevents noise
currents from the bus from entering the local ground.
The ISOUSB211-Q1 device is available for reinforced
isolation. It supports a wide ambient temperature
range of –40°C to +125°C. The device is available in
the small foot-print SSOP-28 (28-DP) package.