May 2007
DS15BR400/DS15BR401
4-Channel LVDS Buffer/Repeater with Pre-Emphasis
General Description
Features
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The DS15BR400/DS15BR401 are four channel LVDS buffer/
repeaters capable of datarates of up to 2 Gbps. High speed
data paths and flow-through pinout minimize internal device
jitter and simplify board layout, while pre-emphasis over-
comes ISI jitter effects from lossy backplanes and cables. The
differential inputs interface to LVDS, and Bus LVDS signals
such as those on National's 10-, 16-, and 18- bit Bus LVDS
SerDes, as well as CML and LVPECL. The differential inputs
and outputs of the DS15BR400 are internally terminated with
100Ω resistors to improve performance and minimize board
space. The DS15BR401 does not have input termination re-
sistors. The repeater function is especially useful for boosting
signals for longer distance transmission over lossy cables and
backplanes.
DC to 2 Gbps low jitter, high noise immunity, low power
operation
6 dB of pre-emphasis drives lossy backplanes and cables
LVDS/CML/LVPECL compatible input, LVDS output
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On-chip 100 Ω output termination, optional 100 Ω input
termination
15 kV ESD protection on LVDS inputs and outputs
Single 3.3V supply
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Industrial -40 to +85°C temperature range
Space saving LLP-32 or TQFP-48 packages
Evaluation Kit Available
Applications
The DS15BR400/DS15BR401 are powered from a single
3.3V supply and consume 578 mW (typ). They operate over
the full -40°C to +85°C industrial temperature range and are
available in space saving LLP-32 and TQFP-48 packages.
Cable extention applications
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Signal repeating and buffering
Digital routers
Typical Application
20188950
© 2007 National Semiconductor Corporation
201889
www.national.com