Optically Isolated I2C Bus Repeater
INTEGRATED CIRCUITS DIVISION
Features
• Bidirectionally Buffers Both I2C Signals • Glitch-Free Operation • Extends and I...
Description
INTEGRATED CIRCUITS DIVISION
Features
Bidirectionally Buffers Both I2C Signals Glitch-Free Operation Extends and Isolates I2C Interfaces Standard- and Fast-mode I2C
Side B Fast-mode I2C Compliant VDDB > 4.5V Very Low EM and RF Generation - No Internal Clock SMBus Compatible VDDB = 3.3V Operates on 2.7V to 5.5V, Enabling Level Translation Slew-Limited Drivers Reduce EMI Powerdown to Hi-Z Doesn't Load I2C 3750Vrms Galvanic Isolation Flammability Rating UL 94 V-0
Applications
Isolated Signal Monitoring and Control Power-over-Ethernet Power Supply High Side Interface I2C Bus Length Extenders I2C Logic Level Translation
Approvals
UL 1577 File E76270 CSA Certified Component: Certificate 70157867 EN/IEC 60950 Certified Component:
TUV Certificate available on our website
CPC5902
Optically Isolated I2C Bus Repeater
Description
IXYS Integrated Circuits’ CPC5902 is a dual, optically isolated, bidirectional logic-bus repeater. It galvanically isolates two open-drain logic signals, and provides a galvanic isolation of 3750Vrms. When the two sides’ supply voltages are configured with different voltages, the CPC5902 also functions as a logic level translator for levels as low as 2.7V or as high as 5.5V.
Unlike transformer or capacitive isolators, the optically isolated repeaters pass DC signals, and do not need to be clocked periodically to sustain the logic states. Buffered signals will always return to their proper value after a transient interrupt...
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