Description
ISOUSB111 is a galvanically-isolated USB 2.0
compliant repeater supporting low speed (1.5 Mbps)
and full speed (12 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 device uses a silicon
dioxide (SiO2) insulation barrier with a withstand
voltage of up to 5700 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 ISOUSB111 device is available
for both basic and reinforced isolation (see Reinforced
and Basic Isolation Options). It supports a wide
ambient temperature range of –40°C to +125°C. The
device is available in the standard SOIC-16 (16-DW)
package.

Features
• Compliant to USB 2.0
• Supports low speed (1.5 Mbps) and full speed (12
Mbps) signaling
• Automatic speed and connection detection
• Supports role reversal
• High CMTI: 100 kV/µs
• VBUS voltage range: 4.25 V to 5.5 V
– 3.3 V internal LDO
• Meets CISPR32 class B emissions limits
• Ambient temperature range: –40°C to +125°C
• 16-SOIC package
• Safety-related certifications:
– 8000-VPK VIOTM and 1500-VPK VIORM
(Reinforced and Basic Options) per DIN VDE
V 0884-11
– 5700-VRMS isolation for 1 minute per UL 1577
– IEC 62368-1, IEC 60601-1 and IEC 61010-1
certifications
– CQC, TUV and CSA certifications
– All certifications planned

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