DS15BR400 Datasheet, PDF (1/11 Pages) National Semiconductor (TI) – 4-Channel LVDS Buffer/Repeater with Pre-Emphasis

September 2006
DS15BR400/DS15BR401
4-Channel LVDS Buffer/Repeater with Pre-Emphasis
General Description
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 termi-
nated with 100Ω resistors to improve performance and mini-
mize board space. The DS15BR401 does not have input
termination resistors. The repeater function is especially
useful for boosting signals for longer distance transmission
over lossy cables and backplanes.
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.
Features
n DC to 2 Gbps low jitter, high noise immunity, low power
operation
n 6 dB of pre-emphasis drives lossy backplanes and
cables
n LVDS/CML/LVPECL compatible input, LVDS output
n On-chip 100 Ω output termination, optional 100 Ω input
termination
n 15 kV ESD protection on LVDS inputs and outputs
n Single 3.3V supply
n Industrial -40 to +85˚C temperature range
n Space saving LLP-32 or TQFP-48 packages
n Evaluation Kit Available
Applications
n Cable extention applications
n Signal repeating and buffering
n Digital routers
Typical Application
© 2006 National Semiconductor Corporation DS201889
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