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MAX14430EAEE+

ADIMAX14430EAEE+

Analog Devices Inc./Maxim Integrated
CAN, RS422, RS485, SPI Digital Isolator 3750Vrms 4 Channel 25Mbps 50kV/µs (Typ) CMTI 16-SSOP (0.154", 3.90mm Width)
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Overview

The MAX14430EAEE+ is a high-speed, four-channel digital isolator designed to provide 3750Vrms galvanic isolation between circuits while supporting data rates up to 25Mbps. It utilizes capacitive coupling technology to transfer signals across an isolation barrier with high common-mode transient immunity of 50kV/us typical. This device operates from a wide supply voltage range of 1.71V to 5.5V, making it compatible with various logic levels including 1.8V, 3.3V, and 5V systems.

Why Choose This Part

This isolator offers a very low power consumption profile and a wide supply range of 1.71V to 5.5V on both sides, allowing for seamless level translation. It provides robust protection with a 3750Vrms isolation rating and high CMTI, ensuring reliable data integrity in electrically noisy industrial settings.

Applications

Isolated SPI Interfaces
Providing safe signal separation for high-speed SPI communication between microcontrollers and sensors in industrial environments.
Industrial Fieldbus Systems
Isolating CAN, RS-485, or RS-422 bus transceivers to prevent ground loops and protect sensitive logic from high-voltage transients.
Battery Management Systems (BMS)
Communicating across high-voltage battery stacks to monitor cell health while maintaining safety isolation.
Medical Equipment
Ensuring patient safety by isolating data paths in diagnostic or monitoring hardware requiring 3750Vrms protection.

Key Specifications

Type CAN, RS422, RS485, SPI
Data Rate 25Mbps
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 3750Vrms
Operating Temperature -40degC ~ 125degC
Inputs - Side 1/Side 2 4/0
Rise / Fall Time (Typ) 1.6ns, 1.4ns (Max)
Supplier Device Package 16-QSOP
Pulse Width Distortion (Max) 4ns
Propagation Delay tpLH / tpHL (Max) 32.5ns, 33.6ns
Common Mode Transient Immunity (Min) 50kV/us (Typ)

Getting Started

To evaluate this part, designers can use the MAX14430FWEVKIT evaluation kit which allows for quick testing of the isolation performance and signal integrity. Ensure that bypass capacitors are placed as close as possible to the VDD pins on both sides of the isolation barrier to maintain stability.

MAX14430 Family

Part NumberDifferenceStock
MAX14430BAEE+ (Analog Devices / Maxim Integrated) BAEE+ 200
MAX14430CASE+ (Analog Devices / Maxim Integrated) CASE+ 2,006