Chapter 2: Device Datasheet for Arria V Devices
2–3
Electrical Characteristics
Maximum Allowed Overshoot and Undershoot Voltage
During transitions, input signals may overshoot to the voltage listed in Table 2–2 and
undershoot to –2.0 V for input currents less than 100 mA and periods shorter than
20 ns.
Table 2–2 lists the maximum allowed input overshoot voltage and the duration of the
overshoot voltage as a percentage of device lifetime. 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 3.95 V can only be at 3.95 V for ~5% over the lifetime of the device; for a
device lifetime of 10 years, this amounts to half a year.
Table 2–2. Maximum Allowed Overshoot During Transitions for Arria V Devices—Preliminary
Overshoot Duration as %
Symbol
Description
Condition (V)
Unit
of High Time
3.7
3.75
3.8
100
%
%
%
%
%
%
%
%
%
59.79
33.08
18.45
10.36
5.87
3.85
3.9
Vi (AC)
AC input voltage
3.95
4
3.34
4.05
4.1
1.92
1.11
February 2012 Altera Corporation
Arria V Device Handbook
Volume 1: Device Overview and Datasheet
ALTERA [ ALTERA CORPORATION ]
