1 Features
• Functional digital isolators
• 50-Mbps data rate
• Robust isolation barrier with ±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 (ISO652x) and Low
(ISO652xF) 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
– Low emissions
• Leadless-DFN (8-REU) package

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

3 Description
The ISO652x devices are high-performance, dualchannel
functional isolators designed for cost
sensitive, space constrained applications that require
isolation for non-safety applications.
The 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 ISO6520 device has
two isolation channels with both channels in the
same direction. The ISO6521 device has two isolation
channels with one 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 chip
design and layout techniques, the electromagnetic
compatibility of the devices has been significantly
enhanced to ease system-level ESD, EFT, surge, and
emissions compliance.