Vitesse expands SONET/SDH SerDes family with new low power 0.18mm CMOS transceivers

July 18, 2001--Vitesse Semiconductor Corporation introduced the newest members in its family of high-performance SONET/SDH Serializer/Deserializer Integrated Circuits developed using 0.18mm CMOS technology.

Vitesse Semiconductor Corporation (NASDAQ:VTSS) introduced the newest members in its family of high-performance SONET/SDH Serializer/Deserializer (SerDes) Integrated Circuits (ICs) developed using 0.18mm CMOS technology. The VSC8142, VSC8145, and VSC8147 expand Vitesse's current line of 2.5Gb/s transceivers by offering devices with increased functionality and performance, yet continue to migrate down the path of lower power dissipation. These devices are ideal solutions for 2.5Gb/s serial or 10Gb/s parallel optical transponder modules, next generation Metro Dense Wave Division Multiplexing (DWDM) systems, SONET/SDH transmission systems, or optical test equipment. A complete reference design including a Small Form Factor (SFF) optical module is available to support the design-in of these products.

The VSC8142 and VSC8145 are extended multi-rate SerDes devices with integrated Multiplexer, Demultiplexer, Clock Recovery Unit (CRU) and Clock Multiplier Unit (CMU) functions supporting OC-48, OC-12, OC-3 with or without Forward Error Correction (FEC), Gigabit Ethernet, Fibre Channel, 2x Fibre Channel, along with other various data rates. The VSC8147 supports OC-48 (with or without FEC). Applications requiring a 16-bit differential LVPECL low-speed host interface use the VSC8142 while the VSC8145 and VSC8147 support a 4-bit LVDS interface, electrically compliant with the OIF SFI-4 interface specifications.

Each device dissipates approximately 1W in power (typical) and exceeds the SONET ITU-T/Bellcore GR-253 requirements for jitter on both the high-speed clock and data outputs. Other features supported include loss of signal detection with automatic lock to reference clock, single or dual reference clock inputs, automatic FIFO synchronization, on-chip back termination with the high-speed clock and data outputs, low-speed data bit order swap for MSB/LSB selection, Rx/Tx Loop timing mode, and complete test loopback.

These CMOS devices provide additional options for Vitesse's end-to-end product solution, providing customers with multi-rate products featuring reductions in power, cost and board space. The VSC8145 and VSC8147 integrate with the Vitesse VSC9211 2.5Gb/s (FEC) bi-directional encoder/decoder, the VSC9112 Packet Over SONET (POS) framer, and the VSC9186 10Gb/s pointer processor and frame aligner. A CRU bypass function is also supported so that Vitesse's adaptive-sampling/rate-agile standalone CRU (VSC8123) can be used.

A reference design demonstrating the integration of the VSC8145 with a SFF optics module and the Vitesse VSC9211 FEC device can be used by designers to simplify the design process. The reference design includes Infineon Technologies' SFF 2.5Gb/s OC-48 single mode optical transceiver (V23818-N15-L17). The Infineon transceiver has extremely low power dissipation and is compliant with the SFF Multi-Source Agreement. A similar reference design will be available for the VSC8142.

The VSC8142 is available in a 208-pin TBGA package and priced at $166.00 for quantities of 1000. General samples will be available in August 2001 with production quantities slated for October. The VSC8145 is available in 156-pin TBGA package and priced at $145.00 for quantities of 1000. General samples will be available in September 2001 with production quantities slated for November. The VSC8147 is available in 100-pin PQFP package and priced at $126.00 for quantities of 1000. General samples will be available in September 2001 with production quantities slated for November.

About Vitesse Semiconductor:

Vitesse Semiconductor Corporation is a designer and supplier of innovative, high- performance integrated circuits (ICs) used in next generation networking and optical communications equipment. For more information, visit www.vitesse.com.

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