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MAX14933：Two-Channel, 2.75kVRMS I2C Isolator

Industry's Most Flexible Digital Isolators Allow Direct Interfacing to Low-Voltage (1.8V) Devices

The MAX14933 is a two-channel, 2.75kVRMS I2C digital isolator utilizing Maxim’s proprietary process technology. For applications requiring 5kVRMS of isolation, refer to the MAX14937 data sheet. The MAX14933 transfers digital signals between circuits with different power domains at ambient temperatures up to +125°C. The device offers two bidirectional, open-drain channels for applications, such as I2C, that require data to be transmitted in both directions on the same line. The device features independent 2.25V to 5.5V supplies on each side of the isolator. The device operates from DC to 1.7MHz and can be used in isolated I2C busses with clock stretching. The MAX14933 is available in both a 16-pin wide-body (10.3mm x 7.5mm) and narrow-body (9.9mm x 3.9mm) SOIC package. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

Key Features Robust Galvanic Isolation of Digital Signals Withstands 2.75kVRMS for 60s (VISO) Continuously Withstands 443VRMS (VIOWM) 630VPEAK Repetitive Peak Voltage (VIORM) Withstands ±10kV Surge per IEC 61000-4-5 2 Packages (4mm or 8mm Creepage and Clearance) Interfaces Directly with Most Micros and FPGAs Accepts 2.25V to 5.5V Supplies Bidirectional Data Transfer from DC to 1.7MHz Low Power Consumption 5.3mA per Channel Typical at 1.7MHz

MAX14933: Functional Diagram Applications/Uses Battery Management I²C, SMBus, PMBus™ Interfaces Instrumentation Power Supplies

DataSheet

Parametrics

Design kits & evaluation modules

• MAX14933WEVKIT
• MAX14937WEVKIT

Quality and Environmental Data

• max14933.pdf

Ordering Information