Datasheet

Electrical characteristics ST485ERB
8/19
(V
CC
= 5 V ± 5 %, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are referred
to T
A
= 25 °C)
Table 9. Receiver switching characteristics
Symbol Parameter Test conditions
(1)
1. All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are
referenced to device ground unless specified
Min. Typ. Max. Unit
t
PLH
t
PHL
Propagation delay input
to output
R
DIFF
= 54Ω,C
L1
= C
L2
= 100pF
(see Figure 4 and Figure 8)
20 130 210 ns
t
SKD
Differential receiver
skew
R
DIFF
= 54Ω, C
L1
= C
L2
= 100pF
(see Figure 4 and Figure 8)
13 ns
t
PZH
Output enable time
C
RL
= 15pF, S1 = Closed (see
Figure 2 and Figure 9)
20 50 ns
t
PZL
Output enable time
C
RL
= 15pF, S2 = Closed
(see Figure 2 and Figure 9)
20 50 ns
t
PLZ
Output disable time
C
RL
= 15pF, S1 = Closed
(see Figure 2 and Figure 9)
20 50 ns
t
PHZ
Output disable time
C
RL
= 15pF, S2 = Closed
(see Figure 2 and Figure 9)
20 50 ns
f
MAX
Maximum data rate 2.5 Mbps