Analog Devices Inc./Maxim Integrated MAX14932DAWE+T

Overview

MAX14932DAWE+T from Analog Devices is a 4-channel, unidirectional digital isolator with 2.75kVRMS galvanic isolation, 150Mbps maximum data rate, and independent 1.71V–5.5V dual-supply operation. It features default-low output configuration, 6.67ns minimum pulse width, and operates across –40°C to +125°C for industrial fieldbus and battery management systems.

For engineers reviewing the MAX14932DAWE+T datasheet, MAX14932DAWE+T pinout, MAX14932DAWE+T application, or MAX14932DAWE+T equivalent, this page delivers verified isolation voltage (2.75kVRMS), CMTI (25kV/µs), propagation delay skew (≤1.6ns same-direction), safety certifications (UL, VDE, cUL), and package-specific thermal derating curves - all critical for high-reliability isolated SPI, RS-485, and BMS designs.

Technical Context

The MAX14932DAWE+T implements capacitive isolation using Analog Devices' proprietary silicon-dioxide barrier technology, enabling robust 2.75kVRMS withstand voltage and 443VRMS continuous working voltage. Its channel architecture supports four independent unidirectional signal paths with separate enable controls (ENA/ENB) and logic-side ground separation (GNDA/GNDB).

It delivers ultra-low propagation delay (5.1ns typical tPLH at 5V), sub-1ns pulse-width distortion, and <1.6ns channel-to-channel skew at 150Mbps - optimized for timing-critical isolated communication interfaces requiring deterministic latency and jitter control in harsh EMI environments.

Key Specifications

Pinout & Package

Package: 16-pin wide-body SOIC (10.3mm × 7.5mm), RoHS-compliant, creepage/clearance ≥8mm, thermal resistance θJA = 71°C/W (four-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Compared with ADUM4402BRWZ and SI8642ED-B-IS, the MAX14932DAWE+T uniquely combines 2.75kVRMS isolation, 150Mbps speed, VDE 0884-11 certification, and default-low outputs - making it optimal for high-reliability, timing-sensitive BMS and medical isolation where both safety and signal fidelity are non-negotiable.

Availability

MAX14932DAWE+T is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, battery management systems, medical sensor isolation, and high-voltage power supply monitoring requiring stable component supply and long-term lifecycle support.

Supply support for MAX14932DAWE+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX1493x family was designed specifically for high-reliability galvanic isolation in harsh environments - delivering certified 2.75kVRMS/5kVRMS isolation, ultra-low skew, and extended temperature operation for next-generation BMS, motor control, and medical instrumentation.

FAQ

What is the isolation voltage rating of the MAX14932DAWE+T and how is it certified?

The MAX14932DAWE+T is rated for 2.75kVRMS isolation voltage (VISO) for 60 seconds and certified to UL1577 (file E351759), VDE 0884-11:2017-01 (basic insulation), and cUL CSA 5A. It also meets IEC 61000-4-5 ±10kV surge and provides 443VRMS continuous working voltage (VIOWM), making it suitable for industrial and medical safety-critical applications.

Does the MAX14932DAWE+T support bidirectional communication like I²C?

No, the MAX14932DAWE+T is a unidirectional 4-channel isolator - all channels transmit from side A (INA1–INA4) to side B (OUTB1–OUTB4). For bidirectional protocols such as I²C, Analog Devices recommends the MAX14933, which is explicitly designed with integrated bidirectional channel architecture and bus arbitration logic.

What are the supply voltage requirements for the MAX14932DAWE+T and can it translate between different logic levels?

The MAX14932DAWE+T requires independent supplies: VDDA (1.71V–5.5V relative to GNDA) and VDDB (1.71V–5.5V relative to GNDB). This dual-supply flexibility enables true level translation - for example, interfacing a 1.8V FPGA I/O bank with a 3.3V isolated RS-485 transceiver without external level shifters.

How does the MAX14932DAWE+T handle power loss on one side of the isolation barrier?

The MAX14932DAWE+T features a default-low output configuration: when side A (input side) is unpowered, all OUTB outputs transition to logic low. This fail-safe behavior prevents undefined states in downstream circuitry - critical for enabling safe shutdown sequences in motor drives and battery disconnect systems.

What thermal derating applies to the MAX14932DAWE+T in a wide SOIC package?

In its 16-pin wide SOIC package (W16M+8), the MAX14932DAWE+T has θJA = 71°C/W on a four-layer board. Its safe power limit decreases linearly above +70°C ambient: 1126.8mW at +70°C, derating by 14.1mW/°C up to +125°C. Full 150Mbps operation must be validated against junction temperature (TJ = TA + PD × θJA) staying ≤150°C.