General Description
The VSC8185 consists of a 16:1 Multiplexer and a clock generator for use in SONET STS-192 / SDH STM-64 systems. The 16:1 Multiplexer accepts 16 parallel low voltage differential swing (LVDS) inputs (D[0:15]±) and (PARITY±) at a data rate of 718.8 to 781.3 Mb/s. This parallel data stream is then serialized into a 11.5Gb/s to 12.5Gb/s output (DOUT±). The clock generator creates the 11.5GHz to 12.5GHz clock signal used to re-time the transmitted serialized data.

FEATUREs:
• High Speed Operation Up to 12.5Gb/s with Integrated Clock Multiplier Unit
• High-Speed Output Clock
• Narrow Clock-to-Data Skew Range
• Superior Data Output Eyes
• Low Power 1.7W (Typ)
• +3.3V Single Supply
• Continuous Tuning Operation from 11.5 to 12.5Gb/s Rates
• 180/195 or 719/781 MHz Reference Clock Input
• Reliable 90-Ball TBGA Package
• Up to 90°C Case Temperature

Benefits:
• Provides High-speed Output Clock for RZ and Re-timed Laser Driver Applications
• Provides Lowest Power Solution in its Performance Class
• Pin-compatible Path to 9.9 to 10.7Gb/s Product (VSC8175)
• Integrated PLL Based Clock Generator
• True LVDS Parallel Data Interface
• Thermal Expansion of TBGA Package is Matched to the PC Board for High Reliability
• Input FIFO to Simplify Parallel Interface Timing
• Data Polarity Invert and Bit Order Swap for Ease of Layout

APPLICATIONs:
• Advanced Forward Error Correction (FEC)
• Return-to-Zero Transmission Applications
• Re-Timing Laser Drivers
• Ultra-Long Haul Systems
• SONET/SDH Networking
• DWDM Systems
• Telecommunications Transmission Systems
• Test Equipment