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Ixiasoft
Visible to Intel only — GUID: mcn1419932950944
Ixiasoft
1.1.1.2. Maximum Allowed Overshoot and Undershoot Voltage
During transitions, input signals may overshoot to the voltage listed in the following table 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.
Symbol | Description | Condition (V) | Overshoot Duration as % of High Time | Unit |
---|---|---|---|---|
Vi (AC) | AC input voltage | 3.8 | 100 | % |
3.85 | 68 | % | ||
3.9 | 45 | % | ||
3.95 | 28 | % | ||
4 | 15 | % | ||
4.05 | 13 | % | ||
4.1 | 11 | % | ||
4.15 | 9 | % | ||
4.2 | 8 | % | ||
4.25 | 7 | % | ||
4.3 | 5.4 | % | ||
4.35 | 3.2 | % | ||
4.4 | 1.9 | % | ||
4.45 | 1.1 | % | ||
4.5 | 0.6 | % | ||
4.55 | 0.4 | % | ||
4.6 | 0.2 | % |
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.