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4-Channel, 1kVRMS, 2.75kVRMS, and 3.75kVRMS Digital Isolators

Industry's Fastest and Most Flexible Digital Isolators Allow Direct Interfacing to Low Voltage (1.8V) Devices

Product Details

Key Features

Applications/Uses

Parametric specs for Digital Isolators
# Channels 4
Insulation Rating 1000VRMS
# Uni-directional Inputs (Side A) 4
# Uni-directional Inputs (Side B) -
Uni-directional Data Rate (Mbps) (max) 150
Oper. Temp. (°C) -40 to +125
Package/Pins See Data Sheet
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Simplified Block Diagram

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Parameters

Parametric specs for Digital Isolators
# Channels 4
Insulation Rating 1000VRMS
# Uni-directional Inputs (Side A) 4
# Uni-directional Inputs (Side B) -
Uni-directional Data Rate (Mbps) (max) 150
Oper. Temp. (°C) -40 to +125
Package/Pins See Data Sheet

Key Features

  • Robust Galvanic Isolation of Digital Signals
    • Withstands up to 3.75kVRMS for 60s (VISO) (MAX14930–MAX14932)
    • Constinuously Withstands 443VRMS (VIOWM) (MAX14930–MAX14932)
    • 630VP Repetitive Peak Voltage (VIORM) (MAX14930–MAX14932)
    • 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 Output Default States (High or Low)
    • 3 Packages (3.8mm, 4mm or 8mm Creepage and Clearance)
  • 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

Applications/Uses

  • Battery Management
  • Fieldbus Communications for Industrial Automation
  • General Multichannel Isolation Applications
  • Isolated SPI, RS-232, RS-485/RS-422
  • Medical Systems

Description

The MAX14930–MAX14932 are a family of 4-channel, 2.75kVRMS and 3.75kVRMS digital isolators utilizing Maxim’s proprietary process technology. The MAX14130–MAX14131 are 4-channel 1kVRMS digital isolators in smaller footprint QSOP packages. For applications requiring 5kVRMS of isolation, see the MAX14934–MAX14936. The MAX14930–MAX14932 family transfers digital signals between circuits with different power domains at ambient temperatures up to +125°C.

The MAX14930–MAX14932 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. For applications requiring bidirectional channels, such as I2C, see the MAX14933.

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 Ordering Information and Selector Guide in the full data sheet 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 MAX14930–MAX14932 are available in both a 16-pin wide body (10.3mm x 7.5mm) and narrow body (9.9mm x 3.9mm) SOIC package. The MAX14130–MAX14131 are available in a 16-pin (6mm x 5mm) QSOP package. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

Simplified Block Diagram

MAX14130, MAX14131, MAX14930, MAX14931, MAX14932: Functional Diagram MAX14130, MAX14131, MAX14930, MAX14931, MAX14932: Functional Diagram 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 .