Arria® V Device Datasheet

ID 683022
Date 5/23/2023
Public
Document Table of Contents

2.1.1.2. Maximum Allowed Overshoot and Undershoot Voltage

During transitions, input signals may overshoot to the voltage shown in the following table. They may also 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% of the duty cycle.

For example, a signal that overshoots to 3.95 V can be at 3.95 V for only ~21% over the lifetime of the device; for a device lifetime of 10 years, the overshoot duration amounts to ~2 years.

Table 82.  Maximum Allowed Overshoot During Transitions for Arria® V GZ Devices
Symbol Description Condition (V) Overshoot Duration as % @ TJ = 100°C Unit
Vi (AC) AC input voltage 3.8 100 %
3.85 64 %
3.9 36 %
3.95 21 %
4 12 %
4.05 7 %
4.1 4 %
4.15 2 %
4.2 1 %

For an overshoot of 3.8 V, the percentage of high time for the overshoot can be as high as 100% over a 10-year period. Percentage of high time is calculated as ([delta T]/T) × 100. This 10-year period assumes that the device is always turned on with 100% I/O toggle rate and 50% duty cycle signal.

Figure 22.  Arria® V GZ Devices Overshoot Duration