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MAX14931FASE+T

ADIMAX14931FASE+T

Analog Devices Inc./Maxim Integrated
General Purpose Digital Isolator 2750Vrms 4 Channel 150Mbps 25kV/µs (Typ) CMTI 16-SOIC (0.154", 3.90mm Width)
NRND18,003 in stock
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Overview

The MAX14931FASE+T is a high-speed, 4-channel digital isolator utilizing capacitive coupling technology to provide 2750Vrms of galvanic isolation. It features a 3/1 channel configuration (three channels in one direction, one in the opposite) and supports data rates up to 150Mbps, making it ideal for high-speed digital interfaces and level shifting.

Why Choose This Part

This device offers best-in-class timing characteristics with a maximum propagation delay of 7.5ns and high CMTI of 25kV/us (typical) to ensure signal integrity in high-noise switching environments. Its narrow-body 16-SOIC footprint saves significant PCB space compared to wide-body alternatives while still maintaining 2750Vrms isolation.

Applications

SPI Interface Isolation
The 3/1 channel architecture is specifically optimized for isolating SPI buses (CS, SCLK, DIN in one direction; DOUT in the other).
Industrial Fieldbus Communications
Provides robust isolation for RS-485, RS-232, and CAN bus digital signals in harsh electrically noisy environments.
Battery Management Systems
Isolates communication signals between high-voltage battery stacks and low-voltage control microcontrollers.
Medical Equipment
Ensures patient and operator safety by providing a barrier against high-voltage transients in diagnostic and monitoring devices.

Key Specifications

Type General Purpose
Data Rate 150Mbps
Technology Capacitive Coupling
Channel Type Unidirectional
Mounting Type Surface Mount
Isolated Power No
Package / Case 16-SOIC (0.154", 3.90mm Width)
Voltage - Supply 1.71V ~ 5.5V
Number of Channels 4
Voltage - Isolation 2750Vrms
Operating Temperature -40degC ~ 125degC
Inputs - Side 1/Side 2 3/1
Rise / Fall Time (Typ) 2ns, 2ns
Supplier Device Package 16-SOIC
Pulse Width Distortion (Max) 1ns
Propagation Delay tpLH / tpHL (Max) 7.5ns, 7.4ns
Common Mode Transient Immunity (Min) 25kV/us (Typ)

Getting Started

To evaluate this series, use the MAX1493XWEVKIT# evaluation kit, which provides a proven layout for testing high-speed switching performance. Ensure that 0.1uF bypass capacitors are placed as close as possible to the VDD pins on both sides of the isolator to maintain stability at 150Mbps.

MAX14931 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Data Rate Package Pulse Width Distortion (Max) Propagation Delay tpLH / tpHL (Max) Stock
MAX14931FASE+T (this part) 150M SOIC-16 1ns 7.5ns, 7.4ns 18,003
MAX14931AASE+ 1M SOIC-16 4.5ns 54.1ns, 55.3ns 269
MAX14931EASE+ 25M SOIC-16 2.6ns 27.5ns, 28.8ns 10,630
MAX14931FASE+ 150M SOIC-16 1ns 7.5ns, 7.4ns 5,062
MAX14931FAWE+ 150M SOIC-16 1ns 7.5ns, 7.4ns 141
MAX14931BASE+ 25M SOIC-16 2.6ns 27.5ns, 28.8ns 907