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MAX14934–MAX14936
Four-Channel, 5kVRMS Digital Isolators
General Description
The MAX14934–MAX14936 are a family of four-channel,
Benefits and Features
● Robust Galvanic Isolation of Digital Signals
• Withstands 5kV
for 60s (V
)
5kV
digital isolators utilizing Maxim’s proprietary
RMS
ISO
RMS
• Continuously Withstands 848V
(V
)
process technology. For applications requiring 2.75kV
RMS IOWM
RMS
• 1200V Repetitive Peak Voltage (V
)
P
IORM
of isolation, see the MAX14930–MAX14932. The
MAX14934–MAX14936 family transfers digital signals
between circuits with different power domains at ambient
temperatures up to +125°C.
• Withstands ±10kV Surge per IEC 61000-4-5
● Interfaces Directly with Most Micros and FPGAs
• Accepts 1.71V to 5.5V Supplies
The MAX14934–MAX14936 family offers all three
possible unidirectional channel configurations to accommodate
any four-channel design, including SPI, RS-232, RS-485,
and large digital IO modules. For applications
requiring bidirectional channels, such as I2C, refer to the
MAX14937.
● Many Options Support Broad Applications
• 3 Data Rates (1Mbps, 25Mbps, 150Mbps)
• 3 Channel Direction Configuration
• 2 Output Default States (High or Low)
● Low Power Consumption at High Data Rates
At 1.8V:
Devices are available with data rates from DC up to
1Mbps, 25Mbps, or 150Mbps. Each device is also available
in either a default high or default low configuration. The
default is the state an output goes to when its input is
unpowered. See the Product Selector Guide and Ordering
Information for the suffixes associated with each option.
• 2.5mA per Channel Typical at 1Mbps
• 5.25mA per Channel Typical at 100Mbps
At 3.3V:
• 2.6mA per Channel Typical at 1Mbps
• 7.1mA per Channel Typical at 100Mbps
Safety Regulatory Approvals
(see Safety Regulatory Approvals)
● ULAccording to UL1577
● cUL According to CSA Bulletin 5A
● VDE 0884-11 Basic Insulation
Independent 1.71V to 5.5V supplies on each side of the
isolator also make the devices suitable for use as level
translators.
The MAX14934–MAX14936 are available in a 16-pin
wide body (10.3mm x 7.5mm) SOIC package. All devices
are rated for operation at ambient temperatures of -40°C
to +125°C.
Applications
● Fieldbus Communications for Industrial Automation
● Isolated SPI, RS-232, RS-485/RS-422
● General Multichannel Isolation Applications
● Battery Management
Product Selector Guide and Ordering Information appear at
end of data sheet.
● Medical Systems
Functional Diagram
V
DDA
V
DDB
V
DDA
V
V
DDA
V
DDB
DDB
MAX14934
MAX14935
MAX14936
ENB
ENB
ENB
INA1
INA2
INA3
INA4
OUTB1
INA1
INA2
INA3
OUTB1
INA1
INA2
OUTB1
OUTB2
OUTB3
OUTB4
OUTB2
OUTB3
INB1
OUTB2
INB1
5kV
DIGITAL
ISOLATOR
5kV
RMS
DIGITAL
ISOLATOR
5kV
RMS
DIGITAL
ISOLATOR
RMS
OUTA1
OUTA1
ENA
OUTA2
ENA
INB2
GNDA
GNDB
GNDA
GNDB
GNDA
GNDB
19-7067; Rev 7; 11/20