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

 

Part Number	Replacement	Explanation

Description

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The MAX14930–MAX14932 are a family of 4-channel, 2.75kV_RMS and 3.75kV_RMS digital isolators utilizing Maxim’s proprietary process technology. The MAX14130–MAX14131 are 4-channel 1kV_RMS digital isolators in smaller footprint QSOP packages. For applications requiring 5kV_RMS 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.

MAX14130, MAX14131, MAX14930, MAX14931, MAX14932: Functional Diagram Enlarge+

Key Features

• Robust Galvanic Isolation of Digital Signals
  • Withstands up to 3.75kV_RMS for 60s (V_ISO) (MAX14930–MAX14932)
  • Constinuously Withstands 443V_RMS (V_IOWM) (MAX14930–MAX14932)
  • 630V_P Repetitive Peak Voltage (V_IORM) (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