Datasheet

ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Test circuits and typical characteristics
DocID9102 Rev 11
13/24
Figure 10: Drive propagation time waveform
Figure 11: Drive enable and disable times test circuit (pull-up configuration)
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.
2. C
L
includes probe and stray capacitance
IN
OUT A
OUT B
1.5 V 1.5 V
3 V
0 V
t
PHL
t
PLH
V
OM
V
OM
t
PHL
t
PLH
V
OM
V
OM
V
OH
V
OL
V
OH
V
OL
V
CC
R
L
= 110 Ω
OUT
C
L
= 50 pF
(2)
S1
D0 V or 3 V
IN
(1)