AOZ8206
Rev. 1.4 April 2010 www.aosmd.com Page 4 of 8
23
GND
561 4
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
1
2
3
6
5
4
GND
Protection of Six Unidirection Lines
Circuit Diagram
Applications Information
Device Connection for Protection of Six
Unidirectional Data Lines
These devices are designed to protect up to six
unidirectional data lines. The device is connected as
follows.
1. Unidirectional protection of six I/O lines is achieved
by connecting pins 1, 2, 3, 4, 5 and 6 to the data
lines. The ground connection should be made
directly to the ground plane for best results. The path
length is kept as short as possible to reduce the
effects of parasitic inductance in the board traces.
Circuit Board Layout Recommendations for
Suppression of ESD
Good circuit board layout is critical for the suppression of
ESD induced transients. The following guidelines are
recommended:
● Place the TVS near the input terminals or connectors
to restrict transient coupling.
● Minimize the path length between the TVS and the
protected line.
● Minimize all conductive loops including power and
ground loops.
● The ESD transient return path to ground should be
kept as short as possible.
● Never run critical signals near board edges.
● Use ground planes whenever possible.
