Legerity Ships SLIC Family Devices in Space-Saving QFN Package; `Quad Flat No-lead' Package Version Reduces SLIC Footprint by 66 Percent.Business Editors & High-Tech Writers AUSTIN, Texas--(BUSINESS WIRE)--Feb. 11, 2002 Legerity Inc., the proven communication IC company, today announced that key members of its subscriber line The line from the customer site to the local telephone company. See subscriber network. interface circuit (SLIC SLIC Subscriber Line Interface Circuit SLIC Scottish Library and Information Council SLIC System Licensed Internal Code SLIC Subscriber Line Interface Card SLIC Session Layer Interface Card (Alacritech, Inc. ) family are now available in the space-saving Quad Flat No-lead (QFN QFN Quad Flat No-Lead QFN Queen Fan Newsletter (rock band) QFN Quad Flat No Leads ) package. These new, reduced-footprint package versions of Legerity SLICs are widely used in long-loop telecommunications linecard and short-loop voice over broadband (VoB) applications. The QFN package offers communication equipment manufacturers significant space savings compared to traditional package types. For example, a device in a 32-pin Plastic Leaded Chip Carrier A Plastic Leaded Chip Carrier (PLCC) is a four-sided “J”-leaded plastic integrated circuit package with pin spacings of 0.05" (1.27 mm). Lead counts range from 20 to 84. PLCC packages can be square or rectangular. Body widths range from .35" to 1.15". (PLCC (Plastic Leaded Chip Carrier) A plastic, square, surface mount chip package that contains leads on all four sides. The leads (pins) extend down and back under and into tiny indentations in the housing. See chip package. ) package has a footprint of approximately 0.295 square inches. An equivalent device in an 8x8mm, 32-pin QFN package has a footprint of 0.099 square inches -- a space savings of 66 percent. As telecommunication equipment manufacturers continue to design higher density linecards, the savings in board real estate enabled by the QFN package ultimately translates into system-level cost savings. "Moving our high-voltage SLIC devices into the space-saving QFN package was no small feat," said Duncan Ashworth, vice president of engineering at Legerity. "Our migration to QFN underscores Legerity's commitment to providing highly reliable, small-footprint IC solutions that enable our customers to continue to reduce cost and increase board density." In developing QFN package versions of its SLIC products, Legerity focused on meeting the rigorous reliability requirements of its customers. After an extensive engineering effort, Legerity developed a custom QFN lead-frame design that allows high-voltage operation. Legerity's innovative QFN lead-frame design reduces the probability of circuit board failures and thus maintains device reliability. The following Legerity IC products are available in an 8x8mm, 32-lead QFN package: the Am79R70 Ringing SLIC, Am79R79 Ringing SLIC, Am79231 SLIC and Am79R241 SLIC. Production volumes of these devices will be available later in February. QFN samples of the Le79555 SLIC will also be available this month, with full production planned for March. In addition, Legerity's Le87S110 ADSL See DSL. ADSL - Asymmetric Digital Subscriber Line line driver/receiver is offered in an 8x8mm, 32-lead QFN package. Legerity SLIC products are used in a wide range of telecommunication applications, including central office (CO), digital loop carrier In telephone communications, a technology that increases the number of channels in the local loop by converting analog signals to digital and multiplexing them back to the end office. (DLC (1) (Data Link Control) See data link and OSI. (2) (Data Link Control) The data link layer protocol (layer 2) that is used in IBM's SNA networking. See SNA, data link protocol and Microsoft DLC. ) and private branch exchange (PBX (Private Branch eXchange) An inhouse telephone switching system that interconnects telephone extensions to each other as well as to the outside telephone network (PSTN). ) linecards, as well as voice over broadband (VoB) customer premises equipment See CPE. , such as cable telephony house-side boxes, integrated access devices, smart residential gateways, and computer telephony systems. Legerity offers the industry's broadest SLIC portfolio, with more than 30 different devices optimized for a multitude of long- and short-loop application requirements. About Legerity Inc. Legerity is the proven communication integrated circuit (IC) company providing system solutions that accelerate the deployment of integrated voice and data networks. Legerity combines IC design expertise and unique process technology with global applications support for leading communication system manufacturers worldwide. Visit Legerity on the Web at www.legerity.com. Legerity, the Legerity logo, and combinations thereof, are trademarks of Legerity Inc. All other brand and product names are used for identification only and may be trademarks of their respective companies. |
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