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Catalyst Semiconductor Launches Lower Power 8-Bit I2C/SMBus I/O Expander

Fri May 30, 2008 8:00pm EDT
CAT9534 Offers Simple, Cost-Effective Solution for Adding
                    Functions While Reducing Power
SANTA CLARA, Calif.--(Business Wire)--
Catalyst Semiconductor, Inc. (NASDAQ:CATS), a supplier of analog,
mixed-signal and non-volatile memory semiconductors, has expanded its
line of bus products with the CAT9534, an 8-bit general purpose
input/output (GPIO) expander for I2C and SMBus-based systems. The
CAT9534 is pin-for-pin and functionally compatible with Catalyst's
industry-standard CAT9554, but operates at 100 times lower standby
power, making it the perfect choice for battery-powered and "green"
systems applications.

   With a low standby mode current supply of 1uA maximum, the CAT9534
offers a simple and cost-effective solution to add I/Os for functions
such as LED indicators, control buttons, fans and sensors, while
reducing power consumption in a broad range of end products, including
white goods, digital cameras, cell phones, PDAs, routers, hubs and
servers.

   The CAT9534 consists of eight ports, which power up as inputs and
each port can be configured as an input or output by writing to a
register. An internal power-on reset eliminates glitches on power-up.
Each I/O port is 5V input tolerant, with a high current I/O drive sink
of up to 25mA and an I/O source of up to 10mA, maximum. Additionally,
each I/O port is compatible with logic thresholds of 2.5V, 3.3V and
5V.

   CAT9534 Product Features

   --  400kHz I2C bus compatible

   --  2.3V to 5.5V operation

   --  8 I/O pins that default to inputs at power-up

   --  Industrial Operating Temperature: -40 degrees C to +85 degrees
        C

   --  Packaging: 16-pin SOIC, TSSOP and 16-pad 4x4 TQFN packages

   Price and Availability

   Pricing for the CAT9534 I/O bus expander is $0.83 each, in 10,000
piece quantities. Samples are available now. Projected lead-time for
production quantities is currently 6 to 8 weeks ARO.

   About Catalyst Semiconductor

   Headquartered in Santa Clara, California, Catalyst Semiconductor
designs and markets analog, mixed-signal and non-volatile memory
products, including Digitally Programmable Potentiometers (DPP(TM)),
white and color LED drivers, DC/DC converters, LDO regulators, voltage
supervisors, bus expanders, serial and parallel EEPROMs, Flash and
NVRAM. Many of Catalyst's products incorporate the Company's Quantum
Charge Programmable(TM) technology, to deliver Adaptive Analog(TM)
products, which offer a new level of customer flexibility, lower power
and smaller die size. Catalyst products are used in
telecommunications, computer, automotive, industrial and consumer
markets. Typical applications include LCD displays, automotive
lighting, optical networks, printers, modems, wireless LANs, network
cards, DIMM modules, cellular telephones, navigation systems, set-top
boxes and Internet routers. www.catsemi.com.

   Forward Looking Statements

   Statements in this press release may be forward looking statements
that are subject to risks and uncertainties, including, but not
limited to, references to Catalyst Semiconductor's CAT9534 bus product
pricing, lead times and availability. Product availability, lead
times, prices and margins can be affected by many factors, including
interruptions in our manufacturing processes and those of our
foundries and vendors, unpredictable customer demand, and
semiconductor industry cycles. More information about factors that
could cause actual results to differ materially from those in the
forward-looking statements is contained under the heading "Certain
Factors That May Affect the Company's Future Results of Operations"
listed from time-to-time in reports Catalyst files with the Securities
and Exchange Commission including, but not limited to, Catalyst's
Annual Report filed on Form 10-K and Quarterly Reports filed on Form
10-Q. Catalyst disclaims any obligation to update information
contained in any forward-looking statement.

   Editor Notes:

   1) Trademark notices: Adaptive Analog(TM), DPP(TM) and Quantum
Charge Programmable(TM) are trademarks of Catalyst Semiconductor, Inc.

   2) I2C is a registered trademark of Philips Corporation. Catalyst
Semiconductor is licensed by Philips Corporation to carry the I2C bus
protocol.

Catalyst Semiconductor, Inc.
Sherry Hill, 408-542-1080 (Editor)
sherry.hill@catsemi.com

Copyright Business Wire 2008



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