Datasheet

ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Test circuits and typical characteristics
DocID9102 Rev 11
15/24
Figure 14: Receiver propagation delay time waveforms
Figure 15: Receiver enable and disable times test circuit
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
1.5 V 1.5 V
t
RPLH
t
RPHL
V
OM
V
OM
= V
CC
/2
V
OM
3.0 V
0 V
V
CC
0 V
1.5 V
-1.5 V
IN
(1)
S3
V
ID
R
OUT
C
L
(2)
1 kΩ
S1
S2
V
CC