MB88153 Fujitsu Media Devices, MB88153 Datasheet - Page 4

• Manufacturer Part Number: MB88153
• Description: Spread Spectrum Clock Generator
• Manufacturer: Fujitsu Media Devices

4
MB88153
Preventing Latchup
Handling unused pins
Power supply pins
Clock I/O circuit
HANDLING DEVICES
A latchup can occur if, on this device, (a) a voltage higher than V
input or output pin or (b) a voltage higher than the rating is applied between V
significantly increases the power supply current and may cause thermal destruction of an element. When you
use this device, be very careful not to exceed the maximum rating.
Do not leave an unused input pin open, since it may cause a malfunction. Handle by, using a pull-up or
pull-down resistor.
Unused output pin should be opened.
Please design connecting the power supply pin of this device by as low impedance as possible from the current
supply source.
We recommend connecting electrolytic capacitor (about 10 µF) and the ceramic capacitor (about 0.01 µF) in
parallel between V
Noise near the CKIN pin may cause the device to malfunction. Design the printed circuit board so that the wiring
for the clock input does not intersect any other wiring.
Please pay attention so that an overshoot and an undershoot do not occur to an input clock of CKIN pin.
Design the printed circuit board that surrounds the CKIN and CKOUT pins with ground.
SS
and V
DD
near the device, as a bypass capacitor.
DD
or a voltage lower than V
DD
and V
SS
. The latchup, if it occurs,
SS
is applied to an