CREDENCE DELIVERS DUO VLSI TEST

Solution to Mitsui High-tec 
Business Editors/Computer Writers 
FREMONT, Calif.--(BUSINESS WIRE)--Sept. 23, 1997--Credence
Systems Corporation (Nasdaq:CMOS), a leading manufacturer of
automatic test equipment (ATE) for the semiconductor industry, today
announced the recent delivery of a Duo Analog Very Large Scale
Integration (AVLSI) Test System to Mitsui High-tec, one of the
world's premiere high-quality lead-frame suppliers based in
Kitakyushu, Japan. 
The Duo provides cost-effective, single-insertion test of Analog
VLSI devices which operate in the subthreshold region of the
circuits.  Fully compliant, integrated test head resources enable the
Duo to accurately test the subthreshold transistor properties, while
providing high thermal stability for vector, scalar and noise
measurements. 
Credence specially configured its Duo system to optimize 
productivity for Mitsui's unique test challenges.  With a digital pin
count of 256 pins, expandable to 512 pins, the Duo's audio subsystem
achieves 20 bit accuracy while the video subsystem ensures
impedance-matched, fully-differential 16 GHz sampling. 
"Numerous semiconductor manufacturers use Credence's Duo systems
while developing their advanced devices.  They were anxious for us to
acquire the Duo so we, in turn, can follow the same methodologies for
volume test, assembly and packaging of their chips," said Toshiya
Matsubara, senior managing director, Mitsui High-tec.  "Now with our
Duo in place, we are ready to perform subcontract test on our
customers' mixed-signal devices at our Kitakyushu facility." 
The Duo is a highly integrated compact test system that reduces
power consumption, floor space and overall cost of ownership
expenses.  A true multimedia tester, the Duo's noise floor achieves
10 nV/root Hz through the audio and video spectrums.  Allowing
single-insertion testing of even the most complex of mixed-signal
devices, Credence's Duo test solution enables manufacturers and
assemblers to achieve high-volume, reliable testing in a cost
effective process. 
"By delivering our Duo system, we are pleased to begin a working
partnership with Mitsui High-tec," commented David Ranhoff,
Credence's executive vice president.  "Credence is focused on
providing our customers with a strategic advantage.  ATE needs to be
flexible, reliable, robust and affordable.  The Duo embodies what ATE
was meant to be." 
Mitsui High-tec, Inc. is a leader in the international
high-quality lead-frame industry.  Mitsui also performs subcontract
assembly services for plastic packages at competitive prices with
assembly, packaging and test all completed at one location.  Mitsui
Corporate Headquarters are located in Kitakyushu, Japan, with Sales 
Offices located in Santa Clara, California and Tempe, Arizona. 
Credence Systems Corporation is a leading manufacturer of
automatic test equipment (ATE) that serves a broad spectrum of the
worldwide semiconductor industry's testing needs.  Credence offers a
wide range of products with test capabilities for digital,
mixed-signal, and memory semiconductors.  The Company utilizes its 
proprietary CMOS technologies to redefine test with products that are
designed to solve its customers' business problems through technology
while meeting the increasingly demanding performance requirements of
today's ATE market. 
The Company is headquartered in Fremont, California, with
manufacturing in Beaverton, Ore.  Credence is listed on the Nasdaq
National Market under the symbol CMOS and can be found on the World
Wide Web at http://www.credence.com 
Note to Editors: Credence, Credence Systems and Duo are
trademarks of Credence Systems Corporation.  Other trademarks that
may be mentioned in this release are the intellectual property of
their respective owners.
 
 
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