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Analog Devices / Maxim Integrated MAX14934/MAX14935/MAX14936 4-Ch Digital Isolators

Analog Devices Inc. MAX14934, MAX14935, and MAX14936 Four-Channel Digital Isolators are four-channel, 5kV digital isolators that transfer digital signals between circuits with different power domains at ambient temperatures up to +125°C. 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. 

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. Independent 1.71V to 5.5V supplies on each side of the isolator also make the devices suitable for use as level translators.

Features

  • Robust galvanic isolation of digital signals
    • Withstands 5kVRMS for 60s (VISO)
    • Continuously withstands 848VRMS (VIOWM)
    • 1200VP Repetitive peak voltage (VIORM)
    • 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 bBulletin 5A
  • VDE 0884-10

Applications

  • Fieldbus communications for industrial automation
  • Isolated SPI, RS-232, RS-485/RS-422
  • Battery management
  • General multichannel isolation applications
  • Medical systems
Publicado: 2014-10-10 | Actualizado: 2024-05-09