1 Features
• 100Mbps data rate
• Robust isolation barrier:
– >30-year projected lifetime at 1500VRMS
working voltage
– Up to 5000VRMS isolation rating
– Up to 12.8kV surge capability
– ±100kV/μs typical CMTI
• Wide supply range: 2.25V to 5.5V
• 2.25V to 5.5V Level translation
• Default output high (ISO773x) and low (ISO773xF)
options
• Wide temperature range: –55°C to +125°C
• Low power consumption, typical 1.5mA per
channel at 1Mbps
• Low propagation delay: 11ns Typical (5V Supplies)
• Robust electromagnetic compatibility (EMC)
– System-level ESD, EFT, and surge immunity
– ±8 kV IEC 61000-4-2 contact discharge
protection across isolation barrier
– Low emissions
• Wide-SOIC (DW-16) and QSOP (DBQ-16)
package options
• Automotive version available: ISO773x-Q1
• Safety-Related Certifications:
– DIN EN IEC 60747-17 (VDE 0884-17)
– UL 1577 component recognition program
– IEC 61010-1, IEC 62368-1, IEC60601-1, and
GB 4943.1 certifications

2 Applications
• Industrial automation
• Motor control
• Power supplies
• Solar inverters
• Medical equipment

3 Description
The ISO773x devices are high-performance, triplechannel
digital isolators with 5000VRMS (DW package)
and 3000VRMS (DBQ package) isolation ratings per
UL 1577.
This family includes devices with reinforced insulation
ratings according to VDE, CSA, TUV and CQC. The
ISO7731B device is designed for applications that
require basic insulation ratings only.
The ISO773x family of devices provides high
electromagnetic immunity and low emissions at
low power consumption, while isolating CMOS or
LVCMOS digital I/Os. Each isolation channel has a
logic input and output buffer separated by a double
capacitive silicon dioxide (SiO2) insulation barrier.
This device comes with enable pins which can be
used to put the respective outputs in high impedance
for multi-controller driving applications and to reduce
power consumption.
The ISO7730 device has all three channels in the
same direction and the ISO7731 device has two
forward and one reverse-direction channel. If the input
power or signal is lost, the default output is high
for devices without suffix F and low for devices with
suffix F. See the Device Functional Modes section for
further details.
Used in conjunction with isolated power supplies,
this family of devices helps prevent noise currents
on data buses, such as RS-485, RS-232, and
CAN , or other circuits from entering the local
ground and interfering with or damaging sensitive
circuitry. Through innovative chip design and layout
techniques, electromagnetic compatibility of the
ISO773x device has been significantly enhanced to
ease system-level ESD, EFT, surge, and emissions
compliance. The ISO773x family of devices is
available in 16-pin wide-SOIC and QSOP packages.