Alliance Semiconductor - Press Releases

Alliance Semiconductor Expands Mixed Signal Family to Include High Performance, Precision Zero and Non Zero Delay Buffers

Low-voltage I Cs Enable Precise re-synchronization and Fan-Out/Distribution Across Multiple Applications

SANTA CLARA, Calif., (June 28, 2005) - Alliance Semiconductor Corporation (NASDAQ: ALSC), a leading worldwide provider of analog and mixed signal products, high-performance memory products, connectivity and networking solutions for the communications, computing, embedded, industrial and consumer markets, today announced the expansion of its Analog and Mixed Signal product portfolio with the availability of its newest families of high-performance Zero Delay Buffers (ZDB's) and Non-Zero Delay (NZDB) Buffers. The ASM5000 family of PLL-based ZDB's and the ASM2000 family of non-PLL-based NZDB's are designed to address the precise, high accuracy and high-performance (>250MHz) clocking needs of various data communications, networking, telecommunications, industrial and many consumer systems.

Fast edge rates (<1nS), low propagation delays (50-500pS) high accuracy (duty cycle stability & jitter) along with very high frequency support (>250MHz), characterize both families of these precision buffers. The devices are designed to support one or two 50 ohm transmission lines.

This expansion includes many of the standard high performance (250MHz+) buffers currently in volume demand. The table below details the 3.3 / 2.5V Low Voltage NZDB's devices in this initial release. The second table details the Low Voltage ZDB's. Alliance Semiconductor expects to continue the product expansion as the line continues its evolution into high performance, very low voltage, high accuracy applications.

Class	ALSC Part Number	PKG Options	DESCRIPTION
NZDB	ASM29940L	32 TQFP 32 LQFP	CMOS/LVPECL_in 18 OUT - TO 250MHz
NZDB	ASM29942C	32 TQFP 32 LQFP	CMOS_in 18 OUT - TO 250MHz
NZDB	ASM29942P	32 TQFP 32 LQFP	LVPECL_in 18 OUT - TO 250MHz
NZDB	ASM299109	32 TQFP 32 LQFP	CMOS/LVPECL_in 18 OUT - TO 250MHz W/split rail
NZDB	ASM29946	32 TQFP 32 LQFP	CMOS_in 10 OUT - TO 250MHz W/split rail
NZDB	ASM29947	32 TQFP 32 LQFP	LVTTL_in 9 OUT - TO 275 MHz
NZDB	ASM29948	32 TQFP 32 LQFP	CMOS/LVPECL_in 12 OUT - TO 275MHz
NZDB	ASM299456	32 TQFP 32 LQFP	LVPECL_in 10 OUT - TO 250MHz W/split rail

These precision Non PLL based products support either 2.5 or 3.3V power supplies and provide support from DC to well in excess of specification of 250MHz, with up to 18 outputs for precise fanout and distribution of the clock signal with very low prop delay and output skews. Many of these products (ZDBs and NZDBs) support a "split-rail" design that provides for either 3.3V or 2.5V LVCMOS outputs for conversion / translation of either a LVCMOS or LVPECL input to LVCMOS, and thus allows for use across multiple platforms. Single and multiple output bank configurations are supported as well.

Class	ALSC Part Number	PKG Options	DESCRIPTION
NZDB	ASM59772A	52 TQFP	CMOS_IN : 12 output 200MHz ZDB w/split rail
NZDB	ASM59773A	52 TQFP	CMOS/LVPECL_in : 12 output 200MHz ZDB w/split rail
NZDB	ASM59774A	52 TQFP	CMOS _IN : 14 output 8.3 - 125MHz ZDB w/split rail
NZDB	ASM59775A	52 TQFP	CMOS _IN : 14 output 8.3 - 200MHz ZDB w/split rail

This high-performance family of Low Voltage Zero Delay Buffers provides support for frequencies from DC to beyond specification (>250Mhz Vs the 200MHz spec) with fan-outs of 12 and 14, and very low propagation delays (Tpd and Tskew) for precise re-synchronization (zero delay) and accuracy. These features coupled with fast edge rates and low jitter, enable the designer to maximize their timing budgets with minimal error budget contribution.

Packaged in 32 and 52 pin LQFP and TQFP packages, Alliance offers both commercial and industrial temperature grades, with standard tin-lead / Pb free - RoHS and/or Green compliant products.

According to Mark Sherwood, Director of Marketing for the Alliance Mixed Signal Business Unit, "This is a significant introduction and roll out for Alliance Semiconductor. The combination of these Low Voltage High Performance ZDB's and LVNZDB's will add significantly to the current offering from Alliance Mixed signal and provides entry into the High-end LVCMOS clock market.

This release allows Alliance Semiconductor to support all key aspects of the clock tree i.e. clock synthesis, frequency generation, clock signal distribution and re-synchronization. With this new addition, Alliance Semiconductor's Mixed Signal Group is now well positioned in clock and timing with a Very wide, in-depth and comprehensive portfolio into the high accuracy and performance applications segments."

Target applications include routers, switches, hubs, base stations and redundant array of independent disks (RAID) storage arrays, as well as specific applications in industrial and some consumer applications.

Samples are available today with initial pricing set at $3.00 - $3.50 in 1K quantity. Full data sheet/product specifications and a complete cross reference guide are available online at www.alsc.com