Top

Two Channel, 5kVRMS I2C Isolator

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

Product Details

Key Features

Parametric specs for Digital Isolators
# Channels 2
Insulation Rating 5000VRMS
# Bi-directional Channels 2
Bi-directional Data Rate (Mbps) (max) 3.4
Oper. Temp. (°C) -40 to +125
Package/Pins SOIC HYBRID (W)/16
Budgetary
Price (See Notes)
3.67
View Less

Simplified Block Diagram

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 .

Parameters

Parametric specs for Digital Isolators
# Channels 2
Insulation Rating 5000VRMS
# Bi-directional Channels 2
Bi-directional Data Rate (Mbps) (max) 3.4
Oper. Temp. (°C) -40 to +125
Package/Pins SOIC HYBRID (W)/16
Budgetary
Price (See Notes)
3.67

Key Features

  • 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

Applications/Uses

  • Battery Management
  • I²C, SMBus, PMBus™ Interfaces
  • Instrumentation
  • Power Supplies

Description

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.

Simplified Block Diagram

MAX14937: Functional Diagram MAX14937: 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 .