Datasheet

P82B96_8 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 08 — 10 November 2009 19 of 32
NXP Semiconductors
P82B96
Dual bidirectional bus buffer
Figure 21 “Diode characteristic curve” also explains how the general Absolute Maximum
DC specification was selected. The current at 25 °C is near zero at −0.55 V. The P82B96
is allowed to operate with +125 °C junction and that would cause this diode voltage to
decrease by 100 × 2 mV = 200 mV. So for zero current we need to specify −0.35 V and we
publish −0.3 V just to have some extra margin.
Remark: You should not be concerned about the transients generated on the wiring by a
P82B96 in normal applications and that is input to the Tx/Rx or Ty/Ry pins of another
P82B96. Because not all ICs that may be driven by P82B96 are designed to tolerate
negative transients, in Section 10.2.1 “Example with questions and answers” we show
they can be managed if required.
Fig 21. Diode characteristic curve
002aaf063
voltage (V)
−2.0 0−0.5−1.5 −1.0
−10
−10
3
−10
2
−10
−1
−1
0
−10
4
diode current
(mA)