SPE0512_11 Datasheet, PDF (5/7 Pages) SYNC POWER Crop. – 2-Line ESD Protection Array

SPE0512
2-Line ESD Protection Array
APPLICATION NOTE
Device Connection for Protection of Two Data Lines
SPE0512 is designed to protect up to two data lines. The device is connected as follows:
1. The TVS protection of two I/O lines is achieved by connecting pins 1 and 2 to the data lines. Pin 3 is connected
to ground. 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.
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:
1. Place the TVS near the input terminals or connectors to restrict transient coupling.
2. Minimize the path length between the TVS and the protected line.
3. Minimize all conductive loops including power and ground loops.
4. The ESD transient return path to ground should be kept as short as possible.
5. Never run critical signals near board edges.
6. Use ground planes whenever possible.
2011/08/04 Ver.5
Page 5