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MAX14434–MAX14436
Four-Channel, Fast, Low-Power,
5kV Digital Isolators
RMS
General Description
Benefits and Features
● Robust Galvanic Isolation for Fast Digital Signals
The MAX14434-MAX14436 are fast, low-power, 4-chan-
nel digital galvanic isolators using Maxim’s proprietary
process technology. These devices transfer digital sig-
nals between circuits with different power domains while
using as little as 0.58mW per channel at 1Mbps with a
1.8V supply. The MAX14434/5/6 have an isolation rating
• 200Mbps Data Rate
• Withstands 5kV
for 60s (V
)
RMS
ISO
• Continuously Withstands 848V
• Withstands ±10kV Surge between GNDA and
GNDB with 1.2/50μs waveform
(V
)
RMS IOWM
of 5kV
for 60 seconds. For applications requiring
• High CMTI (50kV/μs, Typical)
RMS
3kV
MAX14432.
or 3.75kV
of isolation, see the MAX14430-
RMS
RMS
● Low Power Consumption
• 1.1mW per Channel at 1Mbps with V
= 3.3V
DD
The MAX14434–MAX14436 family offers all three
possible unidirectional channel configurations to
accommodate any 4-channel design, including SPI,
RS-232, RS-485, and digital I/O applications. Output
enable for the A side of the MAX14435R/S/U/V is active-
low, making them ideal for isolating a port on a shared
SPI bus since the CS signal can directly enable the MISO
signal on the isolator. All other devices in the family have
the traditional active-high enable.
• 3.5mW per Channel at 100Mbps with V
= 1.8V
DD
● Options to Support a Broad Range of Applications
• 2 Data Rates (25Mbps, 200Mbps)
• 3 Channel Direction Configurations
• 2 Output Default States (High/Low)
Applications
● Isolated SPI Interface
● Fieldbus Communications for Industrial Automation
● Isolated RS-485/RS-422, CAN
● Battery Management
Devices are available with a maximum data rate of either
25Mbps or 200Mbps and with outputs that are either
default-high or default-low. The default is the state the
output assumes when the input is either not powered or
is open-circuit. See the Ordering Information and Product
Selector Guide for suffixes associated with each option.
Independent 1.71V to 5.5V supplies on each side of the
isolator also make the devices suitable for use as level
translators.
● Medical Systems
Safety Regulatory Approvals
● UL According to UL1577
● cUL According to CSA Bulletin 5A
The MAX14434–MAX14436 are available in a 16-pin wide-
body SOIC package with 8mm of creepage and clearance.
The package material has a minimum comparative track-
ing index (CTI) of 600V, which gives it a group I rating
in creepage tables. All devices are rated for operation at
ambient temperatures of -40°C to +125°C.
Ordering Information and Product Selector Guide appear at
end of data sheet.
19-100102; Rev 6; 11/20