Datasheet

Electrical characteristics ST3485EB, ST3485EC
8/21 DocID9102 Rev 6
Note: 1.  V
OD
and  V
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input
changes state.
2. Measured on |t
PLH
(A) - t
PHL
(A)| and |t
PLH
(B) - t
PHL
(B)|.
3. The transceivers are put into shutdown by bring RE
high and DE low. If the input are in
state for less than 80 ns, the part are guaranteed not to enter shutdown. If the inputs are in
this state for at least 300 ns, the parts are guaranteed to have entered shutdown.
Table 12. Receiver switching characteristics (V
CC
= 3 V to 3.6 V, T
A
= -40 to 85 °C, unless
otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
t
RPLH
t
RPHL
Propagation delay
V
ID
= 0 V to 3 V, C
L
= 15 pF
(Figure 13 and Figure 14)
30 50 ns
t
RPDS
|t
RPLH
- t
RPHL
| receiver
propagation delay skew
V
ID
= 0 V to 3 V, C
L
= 15 pF
(Figure 13 and Figure 14)
13ns
t
PRZL
Receiver output enable
time to low level
C
L
= 15 pF, (Figure 15 and Figure 17)1020ns
t
PRZH
Receiver output enable
time to high level
C
L
= 15 pF, (Figure 15 and Figure 16)1020ns
t
PRHZ
Receiver output disable
time from high level
C
L
= 15 pF, (Figure 15 and Figure 18)1020ns
t
PRLZ
Receiver output disable
time from low level
C
L
= 15 pF, (Figure 15 and Figure 19)1020ns
t
PRSH
Receiver output enable
time from shutdown to
high level
C
L
= 15 pF, (Figure 15 and Figure 16)1020ns
t
PRSL
Receiver output enable
time from shutdown to low
level
C
L
= 15 pF, (Figure 15 and Figure 17)2040µs