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MAX14131FAEE+

ADIMAX14131FAEE+

Analog Devices Inc./Maxim Integrated
General Purpose Digital Isolator 1000Vrms 4 Channel 150Mbps 25kV/µs (Typ) CMTI 16-SSOP (0.154", 3.90mm Width)
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Overview

The MAX14131FAEE+ is a high-speed, four-channel digital isolator designed to provide 1000Vrms isolation in a compact 16-SSOP package. Using capacitive coupling technology, it supports data rates up to 150Mbps while maintaining low power consumption and high common-mode transient immunity of 25kV/us. The device features a 3/1 channel directionality configuration with a default low output state.

Why Choose This Part

This isolator offers a wide supply voltage range from 1.71V to 5.5V, enabling direct level translation between different logic domains. Its low power profile of 5.6mA at 150Mbps and small footprint make it suitable for high-density industrial designs requiring galvanic protection.

Applications

Isolated SPI
Ideal for high-speed SPI bus isolation where three channels are used for SCLK, MOSI, and CS, with one return channel for MISO.
RS-485/RS-422 Transceivers
Provides logic-level isolation between a microcontroller and industrial transceivers to protect against ground loops.
Battery Management Systems
Used to isolate communication signals between high-voltage battery stacks and low-voltage control units.
Industrial Fieldbus
Ensures robust data integrity in noisy industrial environments for protocols like Profibus or DeviceNet.

Key Specifications

Type General Purpose
Data Rate 150Mbps
Technology Capacitive Coupling
Channel Type Unidirectional
Mounting Type Surface Mount
Isolated Power No
Package / Case 16-SSOP (0.154", 3.90mm Width)
Voltage - Supply 1.71V ~ 5.5V
Number of Channels 4
Voltage - Isolation 1000Vrms
Operating Temperature -40degC ~ 125degC
Inputs - Side 1/Side 2 3/1
Rise / Fall Time (Typ) 2ns, 2ns
Supplier Device Package 16-QSOP
Pulse Width Distortion (Max) 1ns
Propagation Delay tpLH / tpHL (Max) 7.5ns, 7.4ns
Common Mode Transient Immunity (Min) 25kV/us (Typ)

Getting Started

When designing with the MAX14131, place 0.1uF bypass capacitors as close as possible to the VDDA and VDDB pins. Ensure proper creepage and clearance distances are maintained on the PCB layout to meet the 1000Vrms isolation rating. Evaluation can be performed using the MAX14131EVKIT, and no special software drivers are required as the device operates as a transparent physical layer isolator.

Also Consider

Si8641 Skyworks Solutions Inc. - Provides 2500Vrms isolation in a SOIC package with very high CMTI performance for motor drive applications.

Categories

Interface ICs > Digital Isolators Industrial & Automation > Industrial Communication