TLSI INTRODUCES A VERY LOW PHASE NOISE, PLL CLOCK MULTPLIER IC FOR SONET/SDH, GIGABIT ETHERNET AND HDTV APPLICATIONS

For Immediate Release

TLSI INTRODUCES A VERY LOW PHASE NOISE, PLL CLOCK MULTPLIER IC FOR SONET/SDH, GIGABIT ETHERNET AND HDTV APPLICATIONS

Further Additions to TLSI's Growing Family of Clock Timing ICs

HUNTINGTON, N.Y. - January 12, 2004 - Telephonics Corporation, a wholly owned subsidiary of the Griffon Corporation (NYSE: GFF), announced today its integrated circuit ('IC') subsidiary, TLSI Inc., introduced the T98552, very low phase noise, PLL clock multiplier IC designed as a replacement for high cost crystal oscillators to address the need for high performance, low cost frequency generation solutions in the growing data communications and HDTV markets. This single chip solution optimizes system performance by exhibiting excellent temperature stability and very low phase noise.

The T98552 is designed to accept an input from a standard, fundamental 10-27 MHz quartz crystal or clock input and to provide a selectable output frequency in the range from 25-200 MHz. The device provides multiply ratios of 2, 3, 4, 5, 6 and 8, making it very flexible for a wide range of applications. In addition, the T98552 includes an internal RC filter that provides very low jitter characteristics and internal crystal load capacitors, which eliminate the need for external components.

The first in a series of new PLL clock synthesizers to be introduced by TLSI over the next few months, the T98552 exhibits excellent phase noise performance (typically -120 dBC/Hz at 10 KHz offset from the center frequency). Absolute jitter is typically ą 50 ps at 100 MHz and operating current (no load) is typically 10 mA. The device operates from the nominal 3.3V power supplies, which are becoming more and more popular in next-generation designs.

"This new PLL clock multiplier was designed for low noise data communications and HDTV applications where high performance yet low cost are mandatory," stated Barry Eckstein, President of TLSI. "This device delivers high performance and still addresses critical pricing issues. It's ideal for generating the clock frequencies typically used in Gigabit Ethernet systems, for example 125 MHz from a 25 MHz crystal. In addition, SONET/SDH networks can take advantage of the selectable multiplier ratios to generate a range of frequencies from 38.88 MHz to 155.52 MHz from a 19.44 MHz crystal. For HDTV applications requiring frequencies ranging from 74-105 MHz, the T98552 can provide a very cost-effective solution by only requiring the use of very low cost fundamental crystals," said Eckstein.

Availability:
Sample quantities of the T98552 are now available. The device is available in the industry standard 16-pin, narrow body SOIC (3.9mm x 9.9mm x 1.35mm) and is very competitively priced at $1.25 in 10,000 pc. quantities. The device is also available in die form shipped in waffle packs. For higher volume pricing consult the factory.

About TLSI
TLSI Inc., a wholly owned subsidiary of Telephonics Corporation, is a broad-based Integrated Circuit (IC) manufacturer providing IC silicon systems solutions for a wide range of applications serving the Internet backbone, broadband wireless and fiber optics, telecommunications, security and automotive markets. Telephonics is a subsidiary of the Griffon Corporation (NYSE: GFF).

Marshall Lacoff
Vice President, Sales & Marketing
TLSI
631.549.6164
lacoff@tlsi.com