1 Features
• Functional Safety-Capable
– Documentation available to aid functional safety
system design: ISO6720, ISO6721
• 50-Mbps data rate
• Robust isolation barrier:
– High lifetime at 450 VRMS working voltage
– Up to 3000 VRMS isolation rating
– ±150 kV/μs typical CMTI
• Wide supply range: 1.71 V to 1.89 V and 2.25 V to
5.5 V
• 1.71-V to 5.5-V level translation
• Default output High (ISO672xB) and Low
(ISO672xFB) Options
• Wide temperature range: –40°C to +125°C
• 1.8 mA per channel typical at 1 Mbps
• Low propagation delay: 11 ns typical
• 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
• Narrow-SOIC (D-8) package
• Safety-Related Certifications:
– DIN EN IEC 60747-17 (VDE 0884-17)
– UL 1577 component recognition program
– IEC 62368-1, IEC 61010-1, IEC 60601-1
– GB 4943.1

2 Applications
• Power supplies
• Grid, Electricity meter
• Motor drives
• Factory automation
• Building automation
• Lighting
• Appliances

3 Description
The ISO672xB devices are high-performance, dualchannel
digital isolators ideal for cost sensitive
applications requiring up to 3000 VRMS (D package)
isolation ratings per UL 1577. These devices are also
certified by VDE, TUV, CSA, and CQC.
The ISO672xB devices provide 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 TI's double
capacitive silicon dioxide (SiO2) insulation barrier.
The ISO6720B device has 2 isolation channels with
both channels in the same direction. The ISO6721B
device has 2 isolation channels with 1 channel in
each direction. In the event of input power or signal
loss, the default output is high for devices without
suffix F and low for devices with suffix F. See Device
Functional Modes section for further details.
Used in conjunction with isolated power supplies,
these devices help prevent noise currents on data
buses, such as UART, SPI, RS-485, RS-232, and
CAN from damaging sensitive circuitry. Through
innovative chip design and layout techniques,
the electromagnetic compatibility of the ISO672xB
devices has been significantly enhanced to ease
system-level ESD, EFT, surge, and emissions
compliance. The ISO672xB family of devices is
available in a 8-pin SOIC narrow-body (D) package
and is a pin-to-pin upgrade to the older generations.
For reinforced isolation requirements, refer to the
ISO672x-Q1.