Analog Devices Inc./Maxim Integrated MAX14932DASE+T

Overview

MAX14932DASE+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 ambient for industrial fieldbus and battery management systems.

For engineers reviewing the MAX14932DASE+T datasheet, MAX14932DASE+T pinout, MAX14932DASE+T application, or MAX14932DASE+T equivalent, this device supports high-speed SPI/RS-485 isolation, level translation between mixed-voltage domains, and safety-critical isolation where VDE 0884-11 Basic Insulation and UL1577 certification are required.

Technical Context

The MAX14932DASE+T implements capacitive isolation with proprietary silicon-dioxide barrier technology, enabling robust 25kV/µs common-mode transient immunity (CMTI) and low propagation delay skew (<1.6ns channel-to-channel same-direction). Its architecture supports fully independent A-side and B-side power domains with undervoltage lockout (1.45V–1.71V threshold) on both sides.

It delivers 150Mbps operation at 5V supply with 5.1ns typical propagation delay (tPLH), sub-1ns pulse-width distortion, and peak eye diagram jitter of 140ps at 5V - optimized for high-fidelity signal integrity in noise-prone industrial environments.

Key Specifications

Pinout & Package

MAX14932DASE+T uses a 16-pin wide-body SOIC package (outline 21-0042, land pattern 90-0107) with 8mm creepage and clearance, RoHS-compliant, and rated for 2.75kVRMS isolation.

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 MAX14932DASE+T uniquely combines 2.75kVRMS isolation, 150Mbps speed, and 5.1ns propagation delay in a wide SOIC package - making it optimal for space-constrained, high-speed industrial interfaces requiring certified basic insulation.

Availability

MAX14932DASE+T is available at Aetrix Electronics and suitable for industrial fieldbus communications, high-speed SPI isolation, and battery management systems requiring stable component supply, long-term lifecycle support, and safety-certified isolation performance.

Supply support for MAX14932DASE+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 technologies, serving industrial, automotive, communications, and healthcare markets.

The MAX14930–MAX14932 family was designed specifically for high-reliability, high-speed digital isolation in harsh industrial environments - delivering certified safety, low jitter, and wide supply flexibility without sacrificing timing precision.

FAQ

What is the maximum data rate supported by the MAX14932DASE+T?

The MAX14932DASE+T supports a maximum data rate of 150Mbps, verified across its full operating temperature range (–40°C to +125°C) and supply voltage range (1.71V–5.5V per side). This enables use in high-speed SPI, RS-485, and digital I/O applications where timing margin is critical. The device achieves this with 5.1ns typical propagation delay and sub-1ns pulse-width distortion at 5V supply.

Does the MAX14932DASE+T support bidirectional communication?

No, the MAX14932DASE+T is a unidirectional digital isolator configured exclusively for A-side-to-B-side signal transfer (INA1–INA4 → OUTB1–OUTB4). It does not support B→A communication. For bidirectional isolation (e.g., I²C), Analog Devices recommends the MAX14933 family. The ENB pin on MAX14932DASE+T is reserved and must be tied high or left floating per datasheet guidance.

What safety certifications does the MAX14932DASE+T hold?

The MAX14932DASE+T is certified to UL1577 (3750VRMS), CSA cUL (3750VRMS), and VDE 0884-11:2017 for Basic Insulation. It meets IEC 60950-1 and IEC 61010-1 requirements with 443VRMS working voltage and 630VPK repetitive peak isolation. These certifications are production-tested and documented in file E351759 (UL/cUL) and 5015017-4880-0001 (VDE).

Can the MAX14932DASE+T operate with different supply voltages on each side?

Yes, the MAX14932DASE+T supports independent 1.71V–5.5V supplies on VDDA and VDDB, enabling true level translation. For example, it can interface a 1.8V FPGA I/O bank (VDDA) with a 5V isolated sensor bus (VDDB) without external level shifters. Input thresholds scale with respective supplies (VIH = 0.7×VDD), and outputs swing rail-to-rail relative to their local supply.

What is the default output state of the MAX14932DASE+T?

The MAX14932DASE+T has a default-low output configuration: when any input (INA1–INA4) is unpowered or floating, the corresponding OUTB1–OUTB4 outputs drive low. This fail-safe behavior ensures predictable state during power sequencing or fault conditions - critical for safety-critical industrial and medical applications where undefined logic states must be avoided.