Oki Semiconductor Announces Three New Industry-Leading Second Generation GaAs Devices.

Business Editors, Technology Writers

SUNNYVALE, Calif.--(BUSINESS WIRE)--Jan. 17, 2000

Oki's Leads the GaAs Technology Market with the 16:1 Multiplexer, 1:16 Demultiplexer and the First 2V Limiting Amplifier Providing a Complete

Cost-Effective Solution for High-Speed Networking Applications

Leading the market in gallium arsenide technology by offering a complete solution for high-speed networking applications, Oki Semiconductor today announced three new additions to its high-speed gallium arsenide (GaAs) product family. Oki's newest GaAs devices include a limiting amplifier, 16:1 multiplexer (mux) and a 1:16 demultiplexer (demux), which are designed for both receiver and transmitter applications at optical carrier rates of 10 Gbps (OC-192). These extremely low power consumption and cost-effective components are designed to support today's exploding demand for bandwidth and are ideal for use in long-and short-haul optical communications networks.

Building on Oki Semiconductor's commitment to deliver advanced ICs to support the era of "converged networks" -- evolving digital network systems that transmit both digital data streams and a myriad of analog information, such as voice and video -- these new devices significantly enhance the company's 10 Gbps product family (more information can be found at www.okisemi.com).

Oki's second generation limiting amplifier, the industry's first 2V device of its kind in production, reduces total power consumption by as much as one half compared to other devices. Oki's 16:1 mux and 1:16 demux, are also the first products of their kind in production, and operate at an unprecedented maximum speed of 12.5 GHz.

"Delivering on our promise to provide the most compelling 10 Gbps products, our new devices symbolize a key milestone in the development of high-speed communication devices," said Dr. Moni Mathew, director of Oki Semiconductor's GaAs and RF products. "Using the material of choice for high-speed networking chips, Oki's new GaAs devices surpass the requirements of system manufacturers and support the exploding bandwidth demands created by the growth of the Internet and new technologies such as ADSL and cable modems."

16:1 Multiplexer and 1:16 Demultiplexer

Oki's 16:1 mux (KGL4221) and 1:16 demux (KGL4222) devices are designed to transfer data to and from lower frequencies by synchronously merging 16 bit parallel data streams. These lower-frequency data streams can then be reconstructed into their original data formats and distributed using conventional networks. The 16:1 mux and 1:16 demux provides a more efficient use of the bandwidth available on the fiber.

Oki's 16:1 multiplexer and demultiplexer are manufactured using Oki's 0.2mm gate length GaAs MESFET process. By using Oki's unique flip-flops, which are MCFF (Memory Cell type Flip Flop) and Direct Coupled FET Logic (DCFL), high speed operation and low power dissipation are realized. Capacitive coupling is available for clock input connection and data output connections. Low speed signal interfaces are emitter-coupled-logic (ECL) compatible for easy multi-product interfacing. These devices are mounted in 48 pin packages.

Limiting Amplifer

Oki's 2V limiting amplifier (KGL4217) offers power dissipation of 0.25W. The high-speed and low power dissipation results from using Direct Coupled FET Logic (DCFL). Capacitive coupling is recommended for input and output signal interfaces.

Other features include:

-- High Speed Operation - maximum bit rate greater than 10Gb/s

-- High Sensitivity - 50 600m Vpp

-- Low Power - 250mW (at power supply voltage 2V)

Pricing & Availability

Samples and production volumes of the limiting amp, 16:1 multiplexer and 1:16 demultiplexer are available now. For small volumes, each device is priced under $2,000.

Oki's Optoelectronic Products

Leveraging 119 years of telecommunications leadership experience, Oki Semiconductor offers a complete family of high-performance, cost-effective RF, fiber-optic and GaAs devices designed to meet the growing needs of next-generation communications systems. Oki's optoelectronic product family includes communications MMICs, SAW duplexers, FETs, digital logic, pulsed and continuous wave lasers, as well as a complete family of advanced GaAs optical communications devices, which operate at a speed of 10 Gbps.

About Oki Semiconductor

Building on Oki's century-long commitment to communications technologies and markets, Oki Semiconductor designs and markets a broad line of advanced integrated circuits for telecommunications, network, automotive, computer, and consumer products. Oki's product lines include telecommunications, RF, laser, networking, speech synthesis, ASIC, microcontroller, and memory devices, offered in a variety of creative packages. Founded in 1977 and headquartered in Sunnyvale, Calif., Oki Semiconductor is a division of Oki America Inc., which is a subsidiary of Oki Electric Industry Co, Ltd. Oki has ISO-9000-certified manufacturing facilities in Japan and Thailand. Information on Oki Semiconductor and its products is available through its Web site at http://www.okisemi.com.