Datasheet

DocID9102 Rev 6 7/21
ST3485EB, ST3485EC Electrical characteristics
21
Table 10. Receiver electrical 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
V
TH
Receiver differential
threshold voltage
V
CM
= -7 V to 12 V, DE = 0 -0.2 0.2 V
V
TH
Receiver input hysteresis V
CM
= 0 V 70 mV
V
OH
Receiver output high
voltage
I
OUT
= -4 mA, V
ID
= 200 mV
(Figure 4)
2V
V
OL
Receiver output low
voltage
I
OUT
= 4 mA, V
ID
= -200 mV, (Figure 4)0.4V
I
OZR
3-state (high impedance)
output current at receiver
V
CC
= 3.6 V, V
O
= 0 V to V
CC
±1 µA
R
RIN
Receiver input resistance V
CM
= -7 V to 12 V 24 k
I
OSR
Receiver short-circuit
current
V
RO
= 0 V to V
CC
760mA
Table 11. Driver 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
D
R
Maximum data rate 12 15 Mbps
t
DD
Differential output delay
R
L
= 60 , C
L
= 15 pF, (Figure 5 and
Figure 6)
18 30 ns
t
TD
Differential output
transition time
R
L
= 60 , C
L
= 15 pF, (Figure 5 and
Figure 6)
12 20 ns
t
PLH
t
PHL
Propagation delay
R
L
= 27 , C
L
= 15 pF, (Figure 9 and
Figure 10)
18 30 ns
t
PDS
|t
PLH -
t
PHL
| driver
propagation delay skew
(1)
R
L
= 27 , C
L
= 15 pF, (Figure 9 and
Figure 10)
25ns
t
PZL
Output enable time R
L
= 110 , (Figure 11 and Figure 12)1935ns
t
PZH
Output enable time R
L
= 110 , (Figure 7 and Figure 8)3050ns
t
PHZ
Output disable time R
L
= 110 , (Figure 7 and Figure 8)1935ns
t
PLZ
Output disable time R
L
= 110  (Figure 11 and Figure 12)3050ns
t
SKEW
Differential output delay
skew
13ns
t
PSH
Driver enable from
shutdown to output high
R
L
= 110  (Figure 7 and Figure 8)3050ns
t
PSL
Driver enable from
shutdown to output low
R
L
= 110  (Figure 11 and Figure 12)1935ns
1. Measured on |t
PLH
(A)-t
PHL
(A)| and |t
PLH
(B)-t
PHL
(B)|.