SRDA70-4 Datasheet, PDF (1/6 Pages) Semtech Corporation – RailClamp Low Capacitance TVS Diode Array

PROTECTION PRODUCTS
SRDA70-4
RailClamp^Ò
Low Capacitance TVS Diode Array
Description
Features
RailClamps are surge rated diode arrays designed to
protect high speed data interfaces. The SRDA70-4 has
been specifically designed to protect sensitive compo-
nents which are connected to data and transmission
lines from over-voltages caused by ESD (electrostatic
discharge), EFT (electrical fast transients), and light-
ning.
The unique design of the SRDA70-4 integrates eight
surge rated, low capacitance steering diodes in a low
profile SO-8 package. During transient conditions, the
steering diodes direct the transient to either the
positive side of the power supply line or to ground. The
SRDA70-4 may be used as a stand alone device or in
conjunction with TVS diodes for enhanced protection.
The low capacitance array configuration allows the user
to protect four high speed data or I/O lines. The low
inductance construction minimizes voltage overshoot
during high current surges.
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) 1kV, 24A (8/20µs)
u Array of surge rated diodes
u Protects four I/O lines
u Low capacitance for high-speed interfaces
u High surge capability
u Low forward voltage characteristics
u Solid-state silicon avalanche 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 Latch-Up Protection
u Microcontroller Input Protection
u Token Ring
u I²C Bus Protection
u Video Line Protection
u Set Top Box I/O
u LAN/WAN Equipment
Circuit Diagram
Schematic & PIN Configuration
REF 1
I/O 1
I/O 2
I/O 3
I/O 4
REF 2
I/O 1
REF 1
REF 1
I/O 2
Revision 9/2000
1
REF 2
I/O 4
I/O 3
REF 2
SO-8 (Top View)
www.semtech.com