ST3485E Electrical characteristics
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Table 9. Receiver electrical characteristics
V
CC
= 3V to 3.6V, 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
= -7V to 12V, DE = 0 -0.2 0.2 V
∆V
TH
Receiver input hysteresis V
CM
= 0V 70 V
V
OH
Receiver output high
voltage
I
OUT
= -4mA, V
ID
= 200mV
(Figure 8. and Figure 9.)
2V
V
OL
Receiver output low
voltage
I
OUT
= 4mA, V
ID
= -200mV, (Figure 3.)0.4V
I
OZR
3-State (high impedance)
output current at receiver
V
CC
= 3.6VV
O
= 0V to V
CC
± 1 µA
R
RIN
Receiver input resistance V
CM
= -7V to 12V 24 KΩ
I
OSR
Receiver short-circuit
current
V
RO
= 0V to V
CC
760mA
Table 10. Driver switching characteristics
V
CC
= 3V to 3.6V, 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
= 60Ω, C
L
= 15pF, (Figure 4. and
Figure 5.)
18 30 ns
t
TD
Differential output
transition time
R
L
= 60Ω, C
L
= 15pF, (Figure 4. and
Figure 5.)
12 20 ns
t
PLH
t
PHL
Propagation delay
R
L
= 27Ω, C
L
= 15pF, (Figure 8. and
Figure 9.)
18 30 ns
t
PDS
|t
PLH -
t
PHL
| Propagation
delay skew (Note 2)
R
L
= 27Ω, C
L
= 15pF, (Figure 8. and
Figure 9.)
25ns
t
PZL
Output enable time R
L
= 110Ω, (Figure 10. and Figure 11.)1935ns
t
PZH
Output enable time R
L
= 110Ω, (Figure 6. and Figure 7.)3050ns
t
PHZ
Output disable time R
L
= 110Ω, (Figure 6. and Figure 7.)1935ns
t
PLZ
Output disable time R
L
= 110Ω, (Figure 10. and Figure 11.)3050ns
t
SKEW
Differential output delay
skew
13ns
t
ZH(SHDN)
Driver enable from
shutdown to output high
30 50 ns
t
ZL(SHDN)
Driver enable from
shutdown to output low
19 35 ns
