1 Features
1• Signaling Rate: 25 Mbps
• Integrated Noise Filter on the Inputs
• Default Output High and Low Options
• Low Power Consumption, Typical ICC per Channel
at 1 Mbps:
– ISO7340x: 0.9 mA (5-V Supplies),
0.7 mA (3.3-V Supplies)
– ISO7341x: 1.2 mA (5-V Supplies),
0.9 mA (3.3-V Supplies)
– ISO7342x: 1.3 mA (5-V Supplies),
0.9 mA (3.3-V Supplies)
• Low Propagation Delay: 31 ns
Typical (5-V Supplies)
• 3.3-V and 5-V Level Translation
• Wide Temperature Range: –40°C to 125°C
• 70-KV/μs Transient Immunity,
Typical (5-V Supplies)
• Robust Electromagnetic Compatibility (EMC)
– System-level ESD, EFT, and Surge Immunity
– Low Emissions
• Operates from 3.3-V and 5-V Supplies
• Wide-Body SOIC-16 Package
• Safety-Related Certifications:
– 4242-VPK Basic Isolation per DIN V VDE V
0884-10 and DIN EN 61010-1
– 3-KVRMS Isolation for 1 minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 61010-1 End Equipment
Standards
– GB4943.1-2011 CQC Certified

2 Applications
• Optocoupler Replacement in:
– Industrial Fieldbus
– Profibus
– Modbus
– DeviceNet Data Buses
– Servo Control Interface
– Motor Control
– Power Supplies
– Battery Packs

3 Description
The ISO734x 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 barrier.
The ISO7340x device has four channels in forward
direction, the ISO7341x device has three forward and
one reverse-direction channels, and the ISO7342x
device has two forward and two reverse-direction
channels. In case of input power or signal loss, the
default output is low for devices with suffix F and high
for devices without suffix F. See the Device
Functional Modes section for further details.