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SRDA12-4 Datasheet, PDF (1/10 Pages) Semtech Corporation – RailClamp® Low Capacitance TVS Diode Array | |||
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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 ESD (electrostatic
discharge), EFT (electrical fast transients), and light-
ning.
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 THRU SRDA12-4
RailClampÃ
Low Capacitance TVS Diode Array
Features
u 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)
u Array of surge rated diodes with internal TVS diode
u Protects four I/O lines & power supply line
u Low capacitance (<15pF) for high-speed interfaces
u Low operating & clamping voltages
u Solid-state technology
Mechanical Characteristics
u JEDEC SO-8 package
u UL 497B listed
u Molding compound flammability rating: UL 94V-0
u Marking : Part number, date code, logo
u Packaging : Tube or Tape and Reel per EIA 481
Applications
u USB Power & Data Line Protection
u T1/E1 secondary IC Side Protection
u T3/E3 secondary IC Side Protection
u HDSL, IDSL secondary IC Side Protection
u Video Line Protection
u Microcontroller Input Protection
u Base stations
u I2C Bus Protection
Circuit Diagram
Schematic & PIN Configuration
REF1
I/O 1
I/O 2
I/O 3
I/O 4
REF2
I/O 1
REF 1 2
REF 1 3
I/O 4
Revision 9/2000
1
8 REF 2
7 I/O
6 I/O
S0-8 (Top View)
5 REF 2
www.semtech.com
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