PRELIMINARY
1www.semtech.com
PROTECTION PRODUCTS
SLVU2.8-4
EPD TVS Diode Array
For ESD and Latch-Up Protection
Description Features
Circuit Diagram Schematic & PIN Configuration
Revision 9/2000
The SLV series of transient voltage suppressors are
designed to protect low voltage, state-of-the-art CMOS
semiconductors from transients caused by electro-
static discharge (ESD), cable discharge events (CDE),
lightning and other induced voltage surges.
The devices are constructed using Semtechs propri-
etary EPD process technology. The EPD process pro-
vides low standoff voltages with significant reductions
in leakage currents and capacitance over silicon-
avalanche diode processes. The SLVU2.8-4 features
integrated low capacitance compensation diodes that
reduce the maximum capacitance to <8pF per line.
This, combined with low leakage current, means signal
integrity is preserved in high-speed applications such
as 10/100 Ethernet.
The SLVU2.8-4 is in an SO-8 package and may be used
to protect two high-speed line pairs. The flow-thru
design minimizes trace inductance and reduces voltage
overshoot associated with ESD events. The low
clamping voltage of the SLVU2.8-4 minimizes the
stress on the protected IC.
The SLV series TVS diodes will meet the surge require-
ments of IEC 61000-4-2, Level 4.
Applications
Mechanical Characteristics
u10/100 Ethernet
uWAN/LAN Equipment
uSwitching Systems
uDesktops, Servers, & Notebooks
uInstrumentation
uBase Stations
uAnalog Inputs
u400 Watts peak pulse power (tp = 8/20µs)
uTransient protection for high speed data lines to
IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)
IEC 61000-4-4 (EFT) 40A (tp = 5/50ns)
IEC 61000-4-5 (Lightning) 24A (tp = 8/20µs)
uProtects two line pairs (four lines)
uComprehensive pin out for easy board layout
uLow capacitance
uLow leakage current
uLow operating and clamping voltages
uSolid-state EPD TVS process technology
uJEDEC SO-8 package
uMolding compound flammability rating: UL 94V-0
uMarking : Part number, date code, logo
uPackaging : Tape and Reel per EIA 481
SO-8 (Top View)