Fujitsu MHT2020AT Product Manual page 26

Device Overview
(3) A negative voltage like the bottom figure isn't to occur at +5 V when power is turned off and, a
thing with no ringing.
Permissible level:
5
4
3
2
1
0
-1
0
Figure 1.1 Negative voltage at +5 V when power is turned off
1-6
0.2 V
100 200 300 400
Time [ms]
500 600 700 800
C141-E192-01EN