The ISO734x-Q1 family of devices provides galvanic
isolation up to 3000 VRMS for 1 minute per UL 1577 and 4242 VPK
per VDE V 0884-10. These devices have four isolated channels comprised of logic input
and output buffers separated by a silicon dioxide (SiO2) insulation
The ISO7340-Q1 device has
four channels in forward direction, the ISO7341-Q1 device has three forward and one reverse-direction channels, and the
ISO7342-Q1 device has two forward and
two reverse-direction channels. In case of input power or signal loss, the default output is
for orderable part numbers with suffix and
for orderable part numbers without suffix .
See the section for further details.
For all available packages, see the orderable addendum at the
end of the datasheet.
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Used in conjunction with isolated power supplies, 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. The ISO734x-Q1 device has integrated
noise filter for harsh industrial environment where short noise pulses may be present at the device
input pins. The ISO734x-Q1 device has TTL input thresholds and
operates from 3-V to 5.5-V supply levels. Through innovative chip design and layout techniques,
electromagnetic compatibility of the ISO734x-Q1 family of devices has
been significantly enhanced to enable system-level ESD, EFT, surge, and emissions
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