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Quad LVDS Transceiver Quiets ATCA/MTCA Backplanes

Coming on board as the industry’s first quad multipoint LVDS transceiver, the DS91M040 promises smooth edge rates to maximize noise margins in AdvancedTCA and MicroTCA backplanes. The device drives and receives clock and data signals in multipoint networks supporting up to four networks simultaneously. It can manage up to 32 loads at clock frequencies to 125 MHz and data transfers up to 250 Mb/s. The transceiver addresses multipoint and multi-drop clock and data distribution applications where a common bus connects multiple drivers and receivers. The transceiver’s smooth edges, 2 ns typical rise and fall times, minimize signal reflections due to un-terminated backplane stubs and its feedback-controlled output provides constant amplitude. It also includes pin-control of the M-LVDS receiver, which allows users to enable a receiver failsafe (type 2) or provide no failsafe (type 1). Available in a small 32-pin, 5 mm x 5 mm LLP, price is $3.79 each/1,000. NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.


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