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MAX12931

MAX12931

Two-Channel, Low-Power, 3kVRMS and 5kVRMS Digital Isolators

Reduce Power Consumption and Improve Transient Immunity

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Overview

Description

The MAX12930/MAX12931 are a family of 2-channel, 3kV/5kVRMS digital galvanic isolators using Maxim’s proprietary process technology. These devices transfer digital signals between circuits with different power domains while using as little as 0.65mW per channel at 1Mbps with 1.8V.

The two channels of the MAX12931 transfer data in opposite directions, and this makes the MAX12931 ideal for isolating the TX and RX lines of a transceiver. The MAX12930 features two channels transferring data in the same direction.

Both devices are available with a maximum data rate of either 25Mbps or 150Mbps and with the default outputs that are either high or low. The default is the state the output assumes when the input is not powered, or if the input is open-circuit. See the Ordering Information 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 MAX12930/MAX12931 are available in an 8-pin, narrow-body SOIC package. In addition, the MAX12931 is available in a 16-pin, wide-body SOIC package. The package material of the 8-pin narrow-body SOIC package has a minimum comparative tracking index (CTI) of 400V, which gives it a group II rating in creepage tables. The package material of the 16-pin wide-body SOIC package has a CTI of 600V, which gives it a group I rating in creepage tables. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

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MAX12930, MAX12931: Functional Diagrams MAX12930, MAX12931: Functional Diagrams Enlarge+

Key Features

  • Robust Galvanic Isolation of Digital Signals
    • Withstands 5kVRMS for 60s (VISO) Wide-Body
    • Withstands 3kVRMS for 60s (VISO) Narrow-Body
    • Continuously Withstands 848VRMS (VIOWM) Wide-Body
    • Continuously Withstands 445VRMS (VIOWM) Narrow-Body
    • Withstands ±10kV Surge between GNDA and GNDB with 1.2/50µs Waveform
    • High CMTI (50kV/µs, typ)
  • Options to Support a Broad Range of Applications
    • 2 Data Rates (25Mbps/150Mbps)
    • 2 Channel Direction Configurations
    • 2 Output Default States (High or Low)
  • Low Power Consumption
    • 1.3mW per Channel at 1Mbps with VDD = 3.3V
    • 3.3mW per Channel at 100Mbps with VDD = 1.8V

Applications/Uses

  • Battery Management
  • Fieldbus Communications for Industrial Automation
  • General Isolation Application
  • Isolated RS232, RS-485/RS-422, CAN
  • Medical Systems

Parametric Specs

See parametric specs for Digital Isolators (75)


Part Number# ChannelsUni-directional InputsUni-directional InputsUni-directional Data Rate
(Mbps)
(Side A)(Side B)(max)
MAX12930B 22-25
MAX12930C 2-150
MAX12930E 2-25
MAX12930F 2-150
MAX12931B 1125
MAX12931C 11150
MAX12931E 1125
MAX12931F 11150

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources


MAX12931BSEVKIT: Evaluation Kit for the MAX12930 and MAX12931
MAX1293XSEVKIT: Evaluation Kit for the MAX12930 and MAX12931
MAX12930EEVKIT: Evaluation Kit for the MAX12930/MAX12931
MAX12930FEVKIT: Evaluation Kit for the MAX12930/MAX12931
MAX12931BWEVKIT: Evaluation Kit for the MAX12930/MAX12931
MAX12931EEVKIT: Evaluation Kit for the MAX12930/MAX12931
MAX12931FEVKIT: Evaluation Kit for the MAX12930/MAX12931

Technical Documents

App Note 7132 Guidelines for Transient Immunity Testing of MAX22190/MAX22192 Industrial Digital Input Serializers
User Guide 6454 IO-Link Handbook
User Guide 6424 MAXREFDES145# 8-Channel IO-Link Master Quick Start Guide

Additional Resources

Essential Analog Toolkit: Isolators

Tools & Models

  • MAX12931B IBIS Model
  • MAX12931C IBIS Model
  • MAX12931E IBIS Model
  • MAX12931B IBIS Model
  • MAX12931F IBIS Model
  • MAX12931C IBIS Model

    •

    Quality And Environmental

    Request Reliability Report for: MAX12931 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

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