MAX14937

PRODUCTION

Two Channel, 5kVRMS I2C Isolator

Industry's Most Flexible Digital Isolators Allow Direct Interfacing to Low-Voltage (2.5V) Devices

Data Sheet (Rev. 4) Product Selection Table
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Overview

  • Robust Galvanic Isolation of Digital Signals
    • Withstands 5kVRMS for 60s (VISO)
    • Continuously Withstands 848VRMS (VIOWM)
    • 1200VPEAK Repetitive Peak Voltage (VIORM)
    • Withstands ±10kV Surge per IEC 61000-4-5
  • Interfaces Directly with Most Micros and FPGAs
    • Accepts 2.25V to 5.5V Supplies
    • Bidirectional Data Transfer from DC to 1.7MHz
  • Low Power Consumption
    • 5.3mA per Channel Typical at 1.7MHz

The MAX14937 is a two-channel, 5kVRMS I2C digital isolator utilizing Maxim’s proprietary process technology. For applications requiring 2.75kVRMS of isolation, see the MAX14933 data sheet. The device transfers digital signals between circuits with different power domains at ambient temperatures up to +125°C.

The device offers two bidirectional, open-drain channels for applications, such as I2C, that require data to be transmitted in both directions on the same line. To prevent latchup action, the A-side outputs comprise special buffers that regulate the logic-low voltage at 0.9V (max), and the input logic-low threshold is at least 50mV lower than the output logic-low voltage. The B side features conventional buffers that do not regulate logic-low output voltage.

The device features independent 2.25V to 5.5V supplies on each side of the isolator. The MAX14937 operates from DC to 1.7MHz and can be used in isolated I2C busses with clock stretching.

The MAX14937 is available in a 16-pin, wide-body (10.3mm x 7.5mm) SOIC package, and is rated for operation at ambient temperatures of -40°C to +125°C.

Applications

  • Battery Management
  • I²C, SMBus, PMBus™ Interfaces
  • Instrumentation
  • Power Supplies
MAX14937
Two Channel, 5kVRMS I2C Isolator
MAX14937: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

Safety and Regulatory Compliance 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Interface Transceivers & Isolators 1
MAX14933
PRODUCTION Two-Channel, 2.75kVRMS I2C Isolator
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Evaluation Kits

MAX14937WEVKIT

OBSOLETE: Evaluation Kit for the MAX14933/MAX14937

Buy Now View Details

Features and Benefits

This evaluation board is obsolete and no longer recommended.

  • Ease of Use
    • Easy Powering Through Micro-USB or Test Points
    • SMA Connectors to Connect to External Equipment
  • Guaranteed 5kVRMS Isolation
  • Fully Assembled and Tested.

Product Details

The MAX14933/MAX14937 evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the functionality of the MAX14933/MAX14937 2-channel digital isolators in a 16-pin, wide-body SOIC surface-mount package. The EV kit features two independent isolated power supplies independently adjustable to +5V.

Applications

  • Battery Management
  • Instrumentation
  • Power Supplies

MAX14933WEVKIT

OBSOLETE: Evaluation Kit for the MAX14933/MAX14937

Buy Now View Details

Features and Benefits

This evaluation board is obsolete and no longer recommended.

  • Ease of Use
    • Easy Powering Through Micro-USB or Test Points
    • SMA Connectors to Connect to External Equipment
  • Guaranteed 5kVRMS Isolation
  • Fully Assembled and Tested.

Product Details

The MAX14933/MAX14937 evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the functionality of the MAX14933/MAX14937 2-channel digital isolators in a 16-pin, wide-body SOIC surface-mount package. The EV kit features two independent isolated power supplies independently adjustable to +5V.

Applications

  • Battery Management
  • Instrumentation
  • Power Supplies
MAX14937WEVKIT
OBSOLETE: Evaluation Kit for the MAX14933/MAX14937
MAX14933WEVKIT
OBSOLETE: Evaluation Kit for the MAX14933/MAX14937

Latest Discussions

51 Weeks Ago
Oscillation when driving an A-side channel on MAX14937
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