EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 515

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Altera Corporation
November 2007
1
Vi (AC)
Table 1–2. Maximum Allowed Overshoot During Transitions
Symbol
Figure 1–1
duration. In the example shown in
voltage is shown in red and is present at the Stratix III pin, up to
4.1 V. From
percentage of high time for overshoot > 3.15 V can be as high as
46% over a 11.4 year period. The percentage of high-time is
calculated as (delta T/T) * 100. This 11.4 year period assumes the
device is always turned on with 100% I/O toggle rate and 50%
duty cycle signal. For lower I/O toggle rates and situations
where the device is in an ideal state, lifetimes are increased.
AC Input Voltage
Stratix III Device Datasheet: DC and Switching Characteristics
Parameter
shows the methodology to determine the overshoot
Table
1–2, for an overshoot of up to 4.1 V, the
Condition
4.05
4.15
4.25
4.35
4.45
4.55
4.65
4.75
4.85
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4
Stratix III Device Handbook, Volume 2
Overshoot duration as
Figure
% of high time
100.000
79.330
46.270
27.030
15.800
1–1, the overshoot
9.240
5.410
3.160
1.850
1.080
0.630
0.370
0.220
0.130
0.074
0.043
0.025
0.015
Unit
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
1–3