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Product category: Communications ICs (Wired)
News Release from: Texas Instruments (April 2001-March 2006) | Subject: SLK2504
Edited by the Electronicstalk Editorial Team on 12 July 2002

Transceiver cuts cost
of speedy optical backplanes

Texas Instruments has developed 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 2.5Gbit/s OC-48 channels from a single device, enabling manufacturers of telecommunications equipment to create 10Gbit/s 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 622Mbit/s 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 Corp'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 multivendor optical interconnects'.

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 300mW per channel at OC-48 rates, a 50% reduction in per-channel power from TI's previous-generation, single-channel product.

The transceiver is unique among competing products in offering integrated pseudorandom 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 155MHz provides design flexibility.

Other features include dual 1.8 and 3.3V 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 10Gbit/s speeds'.

TI's SLK2504 transceiver is sampling now, with volume production scheduled for August, 2002.

The device is available in a 289-lead BGA package.

Planned pricing is $80 each in quantities of 1000.

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