rise time (t_r) (1) (general)

The time interval between one reference point on a waveform and a second reference point of greater magnitude on the same waveform.

NOTE The first and second reference points are usually 10% and 90%, respectively, of the steady-state amplitude of the waveform existing after the transition, measured with respect to the steady-state amplitude existing before the transition.

(2) (of an analog integrated circuit): For a step-function change of the input signal level, the time interval between the end of the delay time (normally 10%) and that instant at which the magnitude of the output signal first passes through a specified value (normally 90%) close to its final value. (Ref. IEC 747‑3.)

(3) (of a digital integrated circuit): Synonym for "transition time, low-to-high level".

(4) (of a transistor): (A) The time interval during which the amplitude of the leading edge of a pulse increases from 10% to 90% of its maximum amplitude.

(B) Synonym for "current rise time, t_ri".

References

JESD99B, 5/07

JESD99B, 5/07
JESD100-B, 12/99

JESD10, 9/81

JESD77-B, 2/00