MAX14934 Datasheet, PDF (1/24 Pages) Maxim Integrated Products – Four-Channel, 5kVRMS Digital Isolators

MAX14934–MAX14936
EVALUATION KIT AVAILABLE
Four-Channel, 5kV_RMS Digital Isolators
General Description
The MAX14934–MAX14936 are a family of four-channel,
5kV digital isolators utilizing Maxim’s proprietary process
technology. For applications requiring 2.75kV of isola-
tion, see the MAX14930–MAX14932. The MAX14934–
MAX14936 family transfers digital signals between cir-
cuits with different power domains at ambient tempera-
tures up to +125°C.
The MAX14934–MAX14936 family offers all three pos-
sible unidirectional channel configurations to accom-
modate 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.
Devices are available with data rates from DC up to
1Mbps, 25Mbps, or 150Mbps. Each device is also avail-
able 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 Ordering Information/Selector Guide
for the 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.
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.
Ordering Information/Selector Guide appears at end of data
sheet.
Functional Diagram
Benefits and Features
● Robust Galvanic Isolation of Digital Signals
• Withstands 5kV_RMS for 60s (V_ISO)
• Constinuously Withstands 848V_RMS (V_IOWM)
• 1200V_P Repetitive Peak Voltage (V_IORM)
• Withstands ±10kV Surge per IEC 61000-4-5
● Interfaces Directly with Most Micros and FPGAs
• Accepts 1.71V to 5.5V Supplies
● Many Options Support Broad Applications
• 3 Data Rates (1Mbps, 25Mbps, 150Mbps)
• 3 Channel Direction Configuration
• 2 Defaults (High or Low)
● Low Power Consumption at High Data Rates
At 1.8V:
• 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 Pending
● UL According to UL1577
● cUL According to CSA Bulletin 5A
● VDE 0884-10
Applications
● Fieldbus Communications for Industrial Automation
● Isolated SPI, RS-232, RS-485/RS-422
● General Multichannel Isolation Applications
● Battery Management
● Medical Systems
VDDA
MAX14934
VDDB
VDDA
MAX14935
VDDB
VDDA
MAX14936
VDDB
ENB
ENB
ENB
INA1
OUTB1
INA1
OUTB1
INA1
OUTB1
INA2
OUTB2
INA2
OUTB2
INA2
OUTB2
5kVRMS
5kVRMS
5kVRMS
DIGITAL
DIGITAL
DIGITAL
INA3
ISOLATOR
OUTB3
INA3
ISOLATOR
OUTB3
OUTA1
ISOLATOR
INB1
INA4
OUTB4
OUTA1
INB1
OUTA2
INB2
ENA
ENA
GNDA
GNDB
19-7067; Rev 0; 9/14
GNDA
GNDB
GNDA
GNDB