SCAN90004_07 Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – 4-Channel LVDS Buffer/Repeater with Pre-Emphasis and IEEE 1149.6

May 2007
SCAN90004
4-Channel LVDS Buffer/Repeater
with Pre-Emphasis and IEEE 1149.6
General Description
The SCAN90004 is a four channel 1.5 Gbps LVDS buffer/re-
peater. High speed data paths and flow-through pinout mini-
mize internal device jitter and simplify board layout, while
configurable pre-emphasis overcomes 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 are internally
terminated with a 100Ω resistor to improve performance and
minimize board space. The repeater function is especially
useful for boosting signals for longer distance transmission
over lossy cables and backplanes.
Integrated IEEE 1149.1 (JTAG) and 1149.6 circuitry supports
testability of both single-ended LVTTL/CMOS and high-speed
differential LVDS interconnects. The 3.3V supply, CMOS pro-
cess, and LVDS I/O ensure stable high performance at low
power over the entire industrial -40 to +85°C temperature
range.
Features
■ ^{1.5 Gbps maximum data rate per channel}
■ ^{Configurable pre-emphasis drives lossy backplanes and}
cables
■ ^{Low output skew and jitter}
■ ^{Hot plug protection}
■ ^{LVDS/CML/LVPECL compatible input, LVDS output}
■ ^{On-chip 100Ω input and output termination}
■ ^{15 kV ESD protection on LVDS inputs and outputs}
■ ^{IEEE 1149.1 and 1149.6 compliant}
■ ^{Fault Insertion}
■ ^{Single 3.3V supply}
■ ^{Very low power consumption}
■ ^{Industrial -40 to +85°C temperature range}
■ ^{Small TQFP Package Footprint}
■ ^{Evaluation Kit Available}
■ ^{See DS90LV004 for non-JTAG version}
Typical Application
© 2007 National Semiconductor Corporation 201130
20113020
www.national.com