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SDC15 Datasheet(PDF) 4 Page - Semtech Corporation

Part No. SDC15
Description  TVS Diode Array for ESD Protection of 12V Data & Power Lines
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SDC15 Datasheet(HTML) 4 Page - Semtech Corporation

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ã 2000 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
PROTECTION PRODUCTS
SDC15
Device Connection for Protection of One Data Line
The SDC15 is designed to protect one data or I/O line
operating at +/- 12 volts. Connection options are as
follows:
l
Common mode protection: Pin 1 is connected to
the data line and pin 2 is connected to ground. For
best results, this pin should be connected directly
to a ground plane on the board. The path length
should be kept as short as possible to minimize
parasitic inductance. Pin 3 is not connected.
l
Differential protection: Pin 1 is connected to one
line and pin 2 is connected to the second line. Pin
3 is not connected.
Circuit Board Layout Recommendations for Suppres-
sion of ESD.
Good circuit board layout is critical for the suppression
of fast rise-time transients such as ESD. The following
guidelines are recommended:
l
Place the SDC15 near the input terminals or
connectors to restrict transient coupling.
l
Minimize the path length between the SDC15 and
the protected line.
l
Minimize all conductive loops including power and
ground loops.
l
The ESD transient return path to ground should be
kept as short as possible.
l
Never run critical signals near board edges.
l
Use ground planes whenever possible.
Device Schematic & Pin Configuration
RS-232 Transceiver Protection Example
Applications Information


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