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Ixiasoft
Visible to Intel only — GUID: joc1422471376982
Ixiasoft
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.
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.