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To: James Fulop who wrote (18298)	4/7/1999 8:04:00 AM
From: Sam P.	Respond to of 93625

Hitachi Releases Address and Clock Driver ICs for DDR SDRAM Modules SAN JOSE, Calif.--(BUSINESS WIRE)--April 5, 1999-- Overview Hitachi Semiconductor (America) Inc. today announced address driver (HD74SSTL16857T) and Phase Locked Loop (PLL) clock driver (HD74CDC857T) ICs, which use the SSTL-2 interface for use with DDR synchronous DRAM modules. Supporting 200- and 150-MHz clock rates, respectively, these components enable stable, high-speed data transfer to be achieved within the main memory of workstations and servers. Sample shipments will begin in May 1999. Significance With the advent of DDR SDRAM as the next generation of high-speed main memory, there is an increasing demand for DIMM driver ICs with the SSTL-2 interface, a protocol that supports DDR-compatible clock input and high-speed operation. To meet these needs, the HD74SSTL16857T address driver IC supports a clock rate of 200 MHz, and the HD74CDC857T PLL clock driver IC, a clock rate of 150 MHz. The latter has a built-in PLL circuit that enables the phase difference between the system clock and the internal clock of the DIMM to be reduced. Support for SSC (Spread Spectrum Clock) modulation makes it possible to construct a system with a low level of electromagnetic interference. The device is manufactured on a 0.35-micron CMOS process, enabling operation on power supply voltages of both 2.5 V and 3.3 V, and is packaged in a thin 48-pin TSSOP for smaller and slimmer end-products. Hitachi also offers a broad array of address and clock driver ICs for SDRAM DIMMs, supplying devices that operate at 100-, 125- and 133-MHz frequency. Pricing and Availability The HD74CDC857T clock driver and HD74SSTL16857T address driver are available in 48-pin TSSOP packages for US$6.00 and US$4.00, respectively, in sample quantities. Reader Contact Readers can request literature package PMZBXPR001P1 from Hitachi Semiconductor (America) Inc., 179 East Tasman Drive, San Jose, CA 95134 or call 1-800-285-1601, or Fax 1-303-297-0447 to request literature or referral to the closest sales location. (Readers outside North America should contact their local Hitachi representative.) Also, visit Hitachi's Web site at semiconductor.hitachi.com. About Hitachi Semiconductor (America) Inc. Hitachi Semiconductor (America) Inc. -- a subsidiary of Hitachi America, Ltd., in turn a subsidiary of Hitachi, Ltd. (NYSE: HIT) supports the requirements of the North American marketplace with a broad range of standard and low power semiconductor solutions. Offering some of the industry's most popular RISC microprocessors and memory components among other semiconductor solutions, Hitachi provides chips to the world's leading device manufacturers within industrial, consumer and emerging market applications. Based on 1997 unit shipments, Hitachi is the world's single-largest provider of 32-bit RISC microprocessors and the second-largest provider of microcontrollers and flash memory cards(a). The Company's substantial design engineering, research and development facilities in the United States help bring the world's best technology to U.S. customers. Note (a): Microprocessor and flash card market position based on 1997 research data from Semico Research Corp., Phoenix, Ariz. Microcontroller market position based on 1997 research data from Cahners In-Stat Group, Scottsdale, Ariz. CONTACT: The Weber Group Phil Gomes, 650/463-8611 pgomes@ca.webergroup.com KEYWORD: CALIFORNIA BW0293 APR 05,1999 9:11 PACIFIC 12:11 EASTERN