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Reinforced, Fast, Low-Power Two-Channel Digital Isolators

Industry's Fastest, Lowest Power Reinforced Digital Isolators

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • Reinforced Galvanic Isolation for Fast Digital Signals
    • Wide-Body 8-Pin SOIC with 8mm of Creepage and Clearance
    • Up to 200Mbps Maximum Data Rate
    • Withstands 5kVRMS for 60s (VISO)
    • Continuously Withstands 1500VRMS (VIOWM)
    • Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
    • High CMTI (50kV/µs, typ)
  • Low Power Consumption
    • 0.76mW per Channel at 1Mbps with VDD = 1.8V
    • 1.42mW per Channel at 1Mbps with VDD = 3.3V
    • 3.2mW per Channel at 100Mbps with VDD = 1.8V
  • Options to Support a Broad Range of Applications
    • 2 Maximum Data Rates (200Mbps, 25Mbps)
    • 2 Channel Direction Configurations
    • 2 Output Default States (High or Low)

Applications/Uses

  • Fieldbus Communications for Industrial Automation
  • General Isolation Applications
  • Isolated RS232, RS485/RS422,CAN
  • Medical Systems
  • Motor Drive

Description

The MAX22245/MAX22246 are a family of 2-channel reinforced, fast, low-power digital galvanic isolators using Maxim’s proprietary process technology. These devices transfer digital signals between circuits with different power domains, using as little as 0.76mW per-channel at 1Mbps (1.8V supply). All of the devices in the family feature reinforced isolation for a withstand voltage rating of 5kVRMS for 60 seconds.

The MAX22245 features two channels transferring data in the same direction. The two channels of the MAX22246 transfer data in opposite directions, and this makes the MAX22246 ideal for isolating the Tx and Rx lines of a transceiver.

Devices are available with a maximum data rate of 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 either not powered or is open circuit. See the Ordering Information and Product Selector Guide 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 MAX22245/MAX22246 family is available in an 8-pin wide-body SOIC package with 8mm of creepage and clearance. The package material has a minimum comparative tracking index (CTI) of 400, which gives it a group II rating in creepage tables. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

Simplified Block Diagram

MAX22245, MAX22246: Functional Diagram MAX22245, MAX22246: 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 .