Texas Instruments Introduces Low Power, Cost-Efficient SONET Transceiver for OC-192 Backplanes

7/11/2002 - Extending high-speed backplane technology, Texas Instruments Incorporated (TI) (NYSE: TXN) announced today the industry´s first cost-effective, low-power SONET OC-192 transmitter-receiver for very-short reach (VSR) optical transponders. The new TI solution supplies four 2.5-gigabit per second (Gbps) OC-48 channels from a single device, enabling manufacturers of telecommunications equipment to create 10-Gbps OC-192 transponders for a fraction of the cost of OC-192 serial solutions.

TI's new SLK2504 SONET/SDH transceiver maps 16 channels of 622-megabit per second (Mbps) data into four independent OC-48 channels, two redundant OC-48 channels, or one OC-192 channel. Compliant with the Optical Interconnect Forum (OIF) SFI-4 interface and compatible with the VSR4-03.0 optical standard, the device is built using 0.18-micron CMOS technology for cost-efficiency, integration and low power consumption. A SONET transponder reference design and evaluation module (EVM) is available based on the SLK2504 and Alvesta Corporation's Model 3100 optical transceiver. Using an industry-standard 300-pin MSA form factor, the reference design/EVM enables manufacturers to develop OC-192 VSR transponders quickly and at a fraction of the cost of 10 Gigabit serial approaches.

"TI and Alvesta have worked closely together to design a cost-effective SONET OC-192 VSR transponder reference design," said Robert Nalesnik, vice president of marketing at Alvesta. "TI's SLK2504 transceiver is integral to the solution, and takes advantage of cost reductions in OC-48 technology to enable more affordable 10 Gigabit multi-vendor optical interconnects."

Targeted for Efficiency in Cost, Space and Power
The SLK2504 is designed specifically for VSR and independent four-channel OC-48 applications to reduce cost, space and power requirements. The device consumes only 300 milliwatts (mW) per channel at OC-48 rates, a 50 percent reduction in per-channel power from TI´s previous-generation, single-channel product. The transceiver is unique among competing products in offering integrated pseudo-random bit stream (PRBS) test circuitry with 231-1 and 27-1 polynomials for more exhaustive detection of bit errors in telecommunications.

A redundancy mode enables manufacturers to develop fail-safe equipment. Integrated LVDS and PECL termination resistors reduce component counts and save board space, and a small-footprint package also saves space. Support for two selectable reference clocks at 622 and 155 megahertz (MHz) provides design flexibility. Other features include dual 1.8- and 3.3-volt power supplies, hot plug and ESD protection, and selectable transmit, receive and transmit/repeat functions.

"The SLK2504 shows that TI is using its high-speed SONET transceiver technology to target areas in the market that need solutions offering cost reduction and higher density," said Atul Patel, TI's Serial Gigabit marketing manager. "TI's product roadmap calls for the introduction of additional targeted products that will help drive the telecommunication industry's transition to 10 Gbps speeds."

Availability, Pricing and Packaging
TI´s SLK2504 transceiver is sampling now, with volume production scheduled for August, 2002. The device is available in a 289-lead ball grid array (BGA) package. Planned pricing is $80 each in quantities of 1,000.

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