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Inverter voltage transfer curve from English Wikipedia.

Summary

Voltages marked on the graph

VOH:  Output High - output above this mark is considered on  (1)
VOL:  Output Low  - output below this mark is considered off (0)
VIH:  Input High - input at or above this mark will turn the device off
VIL:  Input Low  - input at or below this mark will turn the device on
Vm:   Midpoint Voltage - used for calculating noise margins, gain, and other parameters

I am the author (Nader Moussa). I constructed this data from a device I built for my ECE442 class at North Carolina State University. This is a Voltage Transfer Curve used to analyze a digital inverter circuit. The data represents a general behavior for similar devices. Since I am the author, I release it to public domain.

Licensing

I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Uploaded for use in Lithuanian Wikipedia.

Audriusa 13:29, 5 March 2006 (UTC)