Description

IXYS Integrated Circuits Division’s 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 interruption on either side.

Features

• Bidirectionally Buffers Both I2 C Signals

• Glitch-Free Operation

• Extends and Isolates I2 C Interfaces

• Standard- and Fast-mode I2 C Side B Fast-mode I2 C 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 I2 C

• 3750Vrms Galvanic Isolation

Applications

• Isolated Signal Monitoring and Control

• Power-over-Ethernet

• Power Supply High Side Interface

• I 2 C Bus Length Extenders

• I 2 C Logic Level Translation

Approvals

• UL 1577 Certified Component: File E76270

• EN/IEC 60950 Certified Component: TUV Certificate B 11 10 49410 007