3 .3 V-P o w e re d , 1 0 Mb p s a n d S le w -Ra t e -Lim it e d
Tru e RS -4 8 5 /RS -4 2 2 Tra n s c e ive rs
5680/MAX3491
3V
V
OM
IN
1.5V
1.5V
R = 27Ω
L
0V
S1
t
t
PHL
PLH
OUT
D
V
OH
GENERATOR
(NOTE 4)
Y
OUT
50Ω
C = 15pF
L
(NOTE 5)
V
OM
V
OM
V
CC
V
OL
t
t
PLH
PHL
V
+ V
OH OL
≈ 1.5V
2
V
OM
=
V
OH
Z
OUT
V
OM
V
OM
V
OL
Figure 8. Driver Propagation Times
3V
S1
OUT
0V OR 3V
D
IN
1.5V
1.5V
0V
V
R = 110Ω
L
C = 50pF
L
(NOTE 5)
t
t
PHZ
PZH
GENERATOR
(NOTE 4)
OH
50Ω
0.25V
OUT
V
OM
V
+ V
OH OL
V
OM
=
≈ 1.5V
0V
2
Figure 9. Driver Enable and Disable Times (t
, t
, t
)
PZH PSH PHZ
V
CC
3V
0V
R = 110Ω
L
IN
1.5V
1.5V
S1
0V OR 3V
OUT
D
t
t
PLZ
PSL
C = 50pF
L
(NOTE 5)
V
CC
GENERATOR
(NOTE 4)
OUT
V
OM
50Ω
0.25V
V
OL
Figure 10. Driver Enable and Disable Times (t , t , t
)
PZL PSL PLZ
_______________________________________________________________________________________
9
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
