Datasheet

ST490AB Electrical characteristics
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Table 8. Receiver electrical characteristics
(V
CC
= 4.5 V to 5.5 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
I
IN1
Logic input current ± 2.0 μA
I
IN2
Input current (A, B)
Other input=0V
V
CC
= 0 or 5.25V
V
IN
=12V 0.5 1 mA
V
IN
=-7V -0.35 -0.8 mA
V
TH
Receiver differential threshold
voltage
V
CM
= -7V to 12V -0.2 0.2 V
ΔV
TH
Receiver input hysteresis V
CM
= 0V 70 mV
V
OH
Receiver output high voltage I
OUT
= -8mA, V
ID
= 200mV 3.5 4.7 V
V
OL
Receiver output low voltage I
OUT
= 8mA, V
ID
= -200mV 0.2 0.4 V
R
RIN
Receiver input resistance V
CM
= -7V to 12V 12 24 kΩ
I
OSR
Receiver short-circuit current V
O
= 0V to V
CC
795mA
Table 9. Driver switching characteristics
(V
CC
= 4.5 V to 5.5 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 Jitter <5% 25 50 Mbps
t
PLH
t
PHL
Propagation delay input
to output
R
L
= 54Ω, C
L1
=C
L2
=50pF, (Figure 1)1016ns
t
SKEW
Differential output delay
skew
R
L
= 54Ω, C
L1
=C
L2
=50pF, (Figure 1)13ns
t
TLH
t
THL
Rise or fall differential
time
R
L
= 54Ω, C
L1
=C
L2
=50pF, (Figure 1)812ns
Table 10. Receiver switching characteristics
(V
CC
= 4.5 V to 5.5 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
PLH
t
PHL
Propagation delay input
to output
C
L
= 15pF, (Figure 2, Figure 4)1930ns
t
SKD
|t
PLH -
t
PHL
| Receiver
output skew
C
L
= 15pF, (Figure 2, Figure 4)13ns
t
TLH
t
THL
Rise or fall time C
L
= 15pF, (Figure 2, Figure 4)8ns