MAX14933AWE+T

The MAX14933AWE+T isolation interface IC provides robust galvanic isolation for digital signals and can withstand high voltages such as 2.75kVRMS for 60 seconds (VISO), 443VRMS sustained (VIOWM), and 630VPEAK repetitive peak voltage (VIORM). It can also handle ±10kV surges per IEC 61000-4-5 and is available in two packages with different creepage and clearance distances. Additionally, the IC interfaces seamlessly with most microcontrollers and FPGAs, accepts a wide supply voltage range from 2.25V to 5.5V, and supports bidirectional data transfer from DC to 1.7MHz. Notably, it maintains a low power consumption of just 5.3mA per channel at 1.7MHz. Overall, the MAX14933AWE+T is an excellent choice for applications requiring safe, efficient digital signal isolation.

·I²C, SMBus, PMBus™ Interfaces

·Power Supplies

·Battery Management

·Instrumentation

The MAX14933 is a two-channel, 2.75kV_RMS I²C digital isolator utilizing Maxim’s proprietary process technology. For applications requiring 5kV_RMS 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. To prevent latch-up action, the A-side outputs comprise special buffers that regulate the logic-low voltage at 0.9V (max), and the input logic-low threshold is at least 50mV lower than the output logic-low voltage. The B side features conventional buffers that do not regulate logic-low output voltage.

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.

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