Electrical Characteristics
Page 3
Maximum Allowed Overshoot and Undershoot Voltage
During transitions, input signals may overshoot to the voltage listed in Table 2 and
undershoot to -2.0 V for input currents less than 100 mA and periods shorter than
20 ns.
The maximum allowed overshoot duration is specified as a percentage of high time
over the lifetime of the device. A DC signal is equivalent to 100% duty cycle.
For example, a signal that overshoots to 4.00 V can only be at 4.00 V for ~15% over the
lifetime of the device; for a device lifetime of 10 years, this amounts to 1.5 years.
Table 2 lists the maximum allowed input overshoot voltage and the duration of the
overshoot voltage as a percentage of device lifetime.
Table 2. Maximum Allowed Overshoot During Transitions for Cyclone V Devices
Symbol
Description
Condition (V)
3.8
Overshoot Duration as % of High Time
Unit
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
100
68
45
28
15
13
11
9
3.85
3.9
3.95
4
4.05
4.1
4.15
4.2
Vi (AC)
AC input voltage
8
4.25
4.3
7
5.4
3.2
1.9
1.1
0.6
0.4
0.2
4.35
4.4
4.45
4.5
4.55
4.6
July 2014 Altera Corporation
Cyclone V Device Datasheet
INTEL [ INTEL ]
