SRDA05-4.TB Ver la hoja de datos (PDF) - Semtech Corporation
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SRDA05-4.TB Datasheet PDF : 10 Pages
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PROTECTION PRODUCTS
Description
RailClamps are surge rated diode arrays designed to
protect high speed data interfaces. The SR series has
been specifically designed to protect sensitive compo-
nents which are connected to data and transmission
lines from overvoltage caused by electrostatic dis-
charge (ESD), electrical fast transients (EFT), and
lightning.
The unique design of the SRDA series devices incorpo-
rates surge rated, low capacitance steering diodes and
a TVS diode in a single package. During transient
conditions, the steering diodes direct the transient to
either the positive side of the power supply line or to
ground. The internal TVS diode prevents over-voltage
on the power line, protecting any downstream compo-
nents.
The low capacitance array configuration allows the user
to protect two high-speed data or transmission lines.
The low inductance construction minimizes voltage
overshoot during high current surges.
SRDA3.3-4 through SRDA12-4
RailClamp
Low Capacitance TVS Diode Array
Features
Transient protection for high-speed data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 24A (8/20µs)
Array of surge rated diodes with internal TVS diode
Protects four I/O lines and power supply line
Low capacitance (<15pF) for high-speed interfaces
Low operating and clamping voltages
Solid-state technology
Mechanical Characteristics
JEDEC SO-8 package
UL 497B listed
Molding compound flammability rating: UL 94V-0
Marking : Part number, date code, logo
Packaging : Tube or Tape and Reel per EIA 481
Applications
USB Power and Data Line Protection
T1/E1 secondary IC Side Protection
T3/E3 secondary IC Side Protection
HDSL, SDSL secondary IC Side Protection
Video Line Protection
Microcontroller Input Protection
Base stations
I2C Bus Protection
Circuit Diagram
Schematic and PIN Configuration
REF1
I/O 1
I/O 2
I/O 3
I/O 4
REF2
Revision 02/03/03
I/O 1 1
REF 1 2
REF 1 3
I/O 2 4
1
8 REF 2
S0-8 (Top View)
7 I/O 4
6 I/O 3
5 REF 2
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