3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491
3V
V
OM
IN
R
L
= 27Ω
S1
D
GENERATOR
(NOTE 4)
50Ω
V
CC
V
OH
+ V
OL
2
OUT
C
L
= 15pF
(NOTE 5)
Y
OUT
t
PLH
t
PHL
V
OH
V
OM
V
OM
V
OL
1.5V
1.5V
0V
V
OM
=
≈
1.5V
Z
OUT
t
PHL
t
PLH
V
OH
V
OM
V
OM
V
OL
Figure 8. Driver Propagation Times
S1
0V OR 3V
D
OUT
R
L
= 110Ω
t
PZH
t
PHZ
0.25V
V
OM
IN
1.5V
1.5V
3V
0V
GENERATOR
(NOTE 4)
C
L
= 50pF
(NOTE 5)
50Ω
OUT
V
OH
+ V
OL
V
OM
=
2
V
OH
≈
1.5V
0V
Figure 9. Driver Enable and Disable Times (t
PZH
, t
PSH
, t
PHZ
)
V
CC
3V
R
L
= 110Ω
S1
0V OR 3V
D
C
L
= 50pF
(NOTE 5)
50Ω
OUT
t
PSL
GENERATOR
(NOTE 4)
t
PLZ
V
CC
OUT
V
OM
0.25V
V
OL
IN
1.5V
1.5V
0V
Figure 10. Driver Enable and Disable Times (t
PZL
, t
PSL
, t
PLZ
)
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9