Optically Isolated Repeater targets I²C bus design.

Press Release Summary:

Offered as integrated optical solution for I²C bus design, CPC5902 buffers bidirectional I²C clock and data ports while providing 3,750 Vrms of galvanic isolation. It supports Standard- and Fast-mode I²C up to 400 kbps, does not require any internal clocking, and supports direct static-state buffering without refresh clocks. Operating from 2.7-5.5 V, communications IC is designed for glitch-free operation and is certified to UL 1577 and EN/IEC 60950.

Original Press Release:

IXYS-Clare Launches the CPC5902 Optically Isolated I2C Bus Repeater: a New Offering of Isolated Communications ICs

Beverly, Massachusetts, USA - IXYS-Clare, Inc., an IXYS company (NASDAQ: IXYS - News), announced the immediate availability of the first in a new family of enhanced communications ICs, the CPC5902 Optically Isolated I2C Bus Repeater. The CPC5902 dual, optically isolated, bidirectional logic-bus repeater is the industry's first integrated optical solution for I2C bus design. This device buffers the bidirectional I2C clock and data ports while providing 3750Vrms of galvanic isolation. The CPC5902 supports both Standard- and Fast-mode I2C (up to 400kbps).

Previous designs required an I2C driver IC and four optocouplers. The CPC5902 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 interference in designs) and supports direct static-state buffering without refresh clocks. In addition, the unique design of the CPC5902 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 CPC5902 offers more design flexibility with a guaranteed operation as low as 2.7V.

The CPC5902 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 power supply high side interface, I2C bus length extender and isolated signal monitoring and control. The wide operational power supply range specification of 2.7V to 5.5V enables I2C logic level translation applications. The CPC5902 is certified to UL 1577 and EN/IEC 60950.

"Within the world of IXYS solutions for our customers, the CPC5902 provides isolated connectivity for power management applications, especially for power control with our Zilog MCU's", said Mark Heisig president of IXYS-Clare.

Pricing and Availability
The CPC5902 is now available in sample and production quantities. For OEM quantities of 10,000 units, the CPC5902 is priced at $1.98, with standard lead-time of six weeks after receipt of order. The CPC5902GS is packaged in a small 8-pin surface mount package and the CPC5902G is in an 8-pin DIP.

About Clare and IXYS, Inc.
IXYS-Clare, Inc., a leader in the design and manufacture of solid state relays and high voltage integrated circuits, is a wholly owned subsidiary of IXYS Corporation. IXYS Corporation develops and markets primarily high performance power semiconductor devices that are used in controlling and converting electrical power efficiently in power systems for the telecommunication and internet infrastructure, motor drives, medical systems and transportation. IXYS also serves its markets with a combination of digital and analog integrated circuits. Additional information about Clare and IXYS may be found at www.clare.com and www.ixys.com.

For More Information:


Catherine Austin
Clare, Inc.
Product Marketing Manager

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