The ISOW784x is a family of high-performance, quad-channel reinforced digital isolators
with an integrated high-efficiency power converter. The integrated DC-DC converter provides up to
650 mW of isolated power at high efficiency and can be configured for various input and output
voltage configurations. Therefore these devices eliminate the need for a separate isolated power
supply in space-constrained isolated designs.
The ISOW784x family of devices provide high electromagnetic immunity and low emissions
while isolating CMOS or LVCMOS digital I/Os. The signal-isolation channel has a logic input and
output buffer separated by a silicon dioxide (SiO2) insulation barrier,
whereas, power isolation uses on-chip transformers separated by thin film polymer as insulating
material. Various configurations of forward and reverse channels are available. If the input signal
is lost, the default output is high for the ISOW784x devices and low for the devices with the F
suffix (see the Device Features).
These devices help prevent noise currents on a data bus 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 ISOW784x family of devices has
been significantly enhanced to ease system-level ESD, EFT, surge and emissions compliance. The
high-efficiency of the power converter allows operation at a higher ambient temperature. The
ISOW784x family of devices is available in a 16-pin SOIC wide-body (SOIC-WB) DWE package.
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