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Analog Devices / Maxim Integrated MAX14934-MAX14936 四通道数字隔离器

MaximMAX14934-MAX14936 四通道数字隔离器是双通道、5kV 数字隔离器，可以在高达 +125°C 的环境温度下、在电路和不同电源域间传输数字信号。MAX14934-MAX14936 系列提供了所有三种可能的通道配置，以适应任何四通道设计，包括 SPI、RS-232、RS-485、和大型数字 IO 模块。这些器件有各种数据速率可选，从 DC 到高达 1Mbps、25Mbps 或 150Mbps。每一器件又分为默认高或默认低配置。默认的是当输入未供电时，输出进入的状态。独立的 1.71V 至 5.5V 电源分别用于隔离器两侧的供电，使器件非常适合用作电平转换器。

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.

特性

  • 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

应用

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