NLSV4T240E
http://onsemi.com
7
APPLICATIONS INFORMATION
Figure 5. Typical Tri−State Output
(C
L
= 50 pF, R
L
= 2 kW, R
pull−up
= 50 kW, test circuit shown in Figure 3)
Figure 6. Typical Tri−State Output
(C
L
= 50 pF, R
L
= R, R
Pull−up
= 2 kW, test circuit shown in Figure 3)
Typical tri−state output waveforms of the NLSX4T240E
are shown in Figures 5 and 6. The shape of the output
waveform during a tri−state condition corresponding to the
disable time (t
PHZ
, t
pLZ
) depends on the configuration of the
pull−up circuit. Figure 5 shows a smooth monotonically
increasing exponentially waveform because a 2 kW
resistance is connected between the output and ground.
Figure 6 shows that the output may have a ‘shelf’ or a short
duration where the slope of the waveform is equal to zero if
no load resistance is connected to ground. The
NLSX4T240E was created from the NLSX4T240 to
minimize the ‘shelf’ of the waveform during the disable
time.
