Beverly, Massachusetts, USA – March 1, 2012 – IXYS-Clare, Inc., an IXYS company (NASDAQ: IXYS – News), announced the immediate availability of the CPC5903, an Optically Isolated I2C Bus Repeater and new addition to the enhanced-communications IC family. Similar to the recently released CPC5902, the CPC5903 is a dual, optically isolated, logic-bus repeater which isolates two open-drain logic signals while providing 3750Vrms of galvanic isolation. The CPC5903 device enables an isolated bidirectional I2C data signal and a unidirectional clock signal whereas the CPC5902 features bidirectional repeaters for both the I2C data and clock signals. The CPC5903 supports both Standard- and Fast-mode I2C data rates.

Previous designs for I2C bidirectional data and unidirectional clocking required an I2C driver IC and three optocouplers. The CPC5903 provides an integrated single package solution that minimizes PC board space and reduces part count. Unlike competitive magnetically isolated digital isolator ICs, transformer or capacitive isolators, Clare\'s optical solution requires no internal clocking (a primary source of EMI/RFI emissions in designs) and supports direct static-state buffering without refresh clocks. In addition, the unique design of the CPC5903 offers glitch-free operation as well as excellent reliability and very long operational life. Whereas most competitive devices work to a minimum supply range of 3.0V, the CPC5903 offers more design flexibility with a guaranteed operation as low as 2.7V. Hence, CPC5903 can also function as a logic level translator for levels as low as 2.7V or as high as 5.5V when either side of the isolation barrier is powered by different supply voltages.

The CPC5903 Optically Coupled I2C Bus Repeater is ideal for Power-over-Ethernet (PoE) applications, providing buffering and isolation of the clock and data signals between the host controller and the Power Supply Equipment (PSE) controller. Additional applications include integrated signal monitoring and control, power supply high side interface, and I2C bus length extender and I2C logic level translation. The CPC5903 is certified to UL 1577 and EN/IEC 60950.

\"The CPC5903 demonstrates our proven optical isolation technology, and ongoing commitment to expand our communications ICs family. This product provides enhanced isolation solutions for power management applications, especially for the growing use of PoE,\" said Mark Heisig, president of IXYS-Clare.

For additional information, please visit  http://www.clare.com/Newsroom/2012PR/PR_Mar012012.htm or contact Mr. Mit Hsu at Seraphim, tel: 26984660 ext. 259 or email to mithsu@seraphim.com.tw  

Vendor:

IXYS Integrated Circuits Division Inc.(Former Clare)