Top

Two-Channel, Fast, Low Power, 5kVRMS Digital Isolators

Low Power, Fast Digital Isolator

Product Details

The MAX12934/MAX12935 are the fastest, lowest power, 2-channel digital galvanic isolators on the market today, using Maxim’s proprietary process technology. These devices transfer digital signals between circuits with different power domains while using as little as 0.65mW per channel at 1Mbps with a 1.8V supply.

The two channels of the MAX12935 transfer data in opposite directions, making the MAX12935 ideal for isolating the TX and RX lines of a transceiver. The two channels of the MAX12934 transfer data in the same direction.

The MAX12934/MAX12935 have an isolation rating of 5kVRMS for 60 seconds. Both 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 not powered or if the input is open-circuit. See the Ordering Information 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.

The MAX12934/MAX12935 are available in a 16-pin, wide-body SOIC package. The package material has a minimum comparative tracking index (CTI) of 600V, which gives it a group 1 rating in creepage tables. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

Key Features

  • Robust Galvanic Isolation for Fast Digital Signals
    • 200 Mbps Data Rate
    • Withstands 5kVRMS for 60s (VISO)
    • Continuously Withstands 848VRMS (VIOWM)
    • Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
    • High CMTI (50kV/µs, Typical)
  • Low Power Consumption
    • 1.3mW per Channel at 2Mbps with VDD = 3.3V
    • 3.3mW per Channel at 100Mbps with VDD = 1.8V
  • Options to Support a Broad Range of Applications
    • 2 Data Rates (25Mbps/200Mbps)
    • 2 Channel Direction Configurations
    • 2 Output Default States (High or Low)

Applications/Uses

  • Battery Management
  • Fieldbus Communications for Industrial Automation
  • General Isolation Application
  • Isolated RS232, RS-485/RS-422, CAN
  • Medical Systems
View More

Simplified Block Diagram

MAX12934, MAX12935: Functional Diagrams MAX12934, MAX12935: Functional Diagrams Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX12934/MAX12935 evaluation kit (EV kit) provides a proven design to evaluate the MAX12934 or MAX12935 two channel, wide-body digital isolators.

The EV kit should be powered from two independent isolated power supplies with nominal output voltage in range from 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX1293XWEVKIT# comes with U1 populated and supports the following digital isolators: MAX12934BAWE+, MAX12934CAWE+, MAX12934EAWE+, MAX12934FAWE+, MAX12935BAWE+, MAX12935CAWE+, MAX12935EAWE+, MAX12935FAWE+

View Details

Features

  • Broad Range of Data Transfer Rates (from DC to 200Mbps)
  • Two Unidirectional Channels in the Same Direction (MAX12934) or Two Unidirectional Channels in the Opposite Direction (MAX12935)
  • SMA Connectors for Easy Connection to External Equipment
  • Wide Power Supply Voltage Range from 1.71V to 5.5V
  • Guaranteed Up to 5kVRMS Isolation (for the Wide-Body SOIC Package) for 60s

Description

The MAX12934/MAX12935 evaluation kit (EV kit) provides a proven design to evaluate the MAX12934 or MAX12935 two channel, wide-body digital isolators.

The EV kit should be powered from two independent isolated power supplies with nominal output voltage in range from 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX1293XWEVKIT# comes with U1 populated and supports the following digital isolators: MAX12934BAWE+, MAX12934CAWE+, MAX12934EAWE+, MAX12934FAWE+, MAX12935BAWE+, MAX12935CAWE+, MAX12935EAWE+, MAX12935FAWE+

View Details

Features

  • Broad Range of Data Transfer Rates (from DC to 200Mbps)
  • Two Unidirectional Channels in the Same Direction (MAX12934) or Two Unidirectional Channels in the Opposite Direction (MAX12935)
  • SMA Connectors for Easy Connection to External Equipment
  • Wide Power Supply Voltage Range from 1.71V to 5.5V
  • Guaranteed Up to 5kVRMS Isolation (for the Wide-Body SOIC Package) for 60s

Description

The MAX12934/MAX12935 evaluation kit (EV kit) provides a proven design to evaluate the MAX12934 or MAX12935 two channel, wide-body digital isolators.

The EV kit should be powered from two independent isolated power supplies with nominal output voltage in range from 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX1293XWEVKIT# comes with U1 populated and supports the following digital isolators: MAX12934BAWE+, MAX12934CAWE+, MAX12934EAWE+, MAX12934FAWE+, MAX12935BAWE+, MAX12935CAWE+, MAX12935EAWE+, MAX12935FAWE+

View Details

Features

  • Broad Range of Data Transfer Rates (from DC to 200Mbps)
  • Two Unidirectional Channels in the Same Direction (MAX12934) or Two Unidirectional Channels in the Opposite Direction (MAX12935)
  • SMA Connectors for Easy Connection to External Equipment
  • Wide Power Supply Voltage Range from 1.71V to 5.5V
  • Guaranteed Up to 5kVRMS Isolation (for the Wide-Body SOIC Package) for 60s

Description

The MAX12934/MAX12935 evaluation kit (EV kit) provides a proven design to evaluate the MAX12934 or MAX12935 two channel, wide-body digital isolators.

The EV kit should be powered from two independent isolated power supplies with nominal output voltage in range from 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX1293XWEVKIT# comes with U1 populated and supports the following digital isolators: MAX12934BAWE+, MAX12934CAWE+, MAX12934EAWE+, MAX12934FAWE+, MAX12935BAWE+, MAX12935CAWE+, MAX12935EAWE+, MAX12935FAWE+

View Details

Features

  • Broad Range of Data Transfer Rates (from DC to 200Mbps)
  • Two Unidirectional Channels in the Same Direction (MAX12934) or Two Unidirectional Channels in the Opposite Direction (MAX12935)
  • SMA Connectors for Easy Connection to External Equipment
  • Wide Power Supply Voltage Range from 1.71V to 5.5V
  • Guaranteed Up to 5kVRMS Isolation (for the Wide-Body SOIC Package) for 60s

Description

The MAX12934/MAX12935 evaluation kit (EV kit) provides a proven design to evaluate the MAX12934 or MAX12935 two channel, wide-body digital isolators.

The EV kit should be powered from two independent isolated power supplies with nominal output voltage in range from 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX1293XWEVKIT# comes with U1 populated and supports the following digital isolators: MAX12934BAWE+, MAX12934CAWE+, MAX12934EAWE+, MAX12934FAWE+, MAX12935BAWE+, MAX12935CAWE+, MAX12935EAWE+, MAX12935FAWE+

View Details

Features

  • Broad Range of Data Transfer Rates (from DC to 200Mbps)
  • Two Unidirectional Channels in the Same Direction (MAX12934) or Two Unidirectional Channels in the Opposite Direction (MAX12935)
  • SMA Connectors for Easy Connection to External Equipment
  • Wide Power Supply Voltage Range from 1.71V to 5.5V
  • Guaranteed Up to 5kVRMS Isolation (for the Wide-Body SOIC Package) for 60s

/en/design/design-tools/ee-sim.html?

SIMULATION MODELS

MAX12935 IBIS Model

Download

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for Digital Isolators
# Channels 2
Insulation Rating 5000VRMS
# Uni-directional Inputs (Side A) 2
# Uni-directional Inputs (Side B) -
Uni-directional Data Rate (Mbps) (max) 200
Isolation Barrier Single
Oper. Temp. (°C) -40 to +125
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
-

Key Features

  • Robust Galvanic Isolation for Fast Digital Signals
    • 200 Mbps Data Rate
    • Withstands 5kVRMS for 60s (VISO)
    • Continuously Withstands 848VRMS (VIOWM)
    • Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
    • High CMTI (50kV/µs, Typical)
  • Low Power Consumption
    • 1.3mW per Channel at 2Mbps with VDD = 3.3V
    • 3.3mW per Channel at 100Mbps with VDD = 1.8V
  • Options to Support a Broad Range of Applications
    • 2 Data Rates (25Mbps/200Mbps)
    • 2 Channel Direction Configurations
    • 2 Output Default States (High or Low)

Applications/Uses

  • Battery Management
  • Fieldbus Communications for Industrial Automation
  • General Isolation Application
  • Isolated RS232, RS-485/RS-422, CAN
  • Medical Systems

Description

The MAX12934/MAX12935 are the fastest, lowest power, 2-channel digital galvanic isolators on the market today, using Maxim’s proprietary process technology. These devices transfer digital signals between circuits with different power domains while using as little as 0.65mW per channel at 1Mbps with a 1.8V supply.

The two channels of the MAX12935 transfer data in opposite directions, making the MAX12935 ideal for isolating the TX and RX lines of a transceiver. The two channels of the MAX12934 transfer data in the same direction.

The MAX12934/MAX12935 have an isolation rating of 5kVRMS for 60 seconds. Both 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 not powered or if the input is open-circuit. See the Ordering Information 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.

The MAX12934/MAX12935 are available in a 16-pin, wide-body SOIC package. The package material has a minimum comparative tracking index (CTI) of 600V, which gives it a group 1 rating in creepage tables. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

Simplified Block Diagram

MAX12934, MAX12935: Functional Diagrams MAX12934, MAX12935: Functional Diagrams Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal