Datasheet

3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
V
ID
50Ω
C
L
= 15pF
(NOTE 5)
GENERATOR
(NOTE 4)
R
OUT
t
RPLH
1.5V
OUT
1.5V
0V
IN
1.5V
3.0V
0V
t
RPHL
V
CC
V
OM
V
OM
0V
V
CC
2
V
OM
=
3V
0V
V
CC
V
OL
C
L
(NOTE 5)
R
1.5V
-1.5V
50Ω
GENERATOR
(NOTE 4)
V
CC
V
ID
1.5V
OUT
S1
S2
1k
IN
1.5V
S1 CLOSED
S2 OPEN
S3 = -1.5V
t
PRZL
t
PRSL
3V
0V
V
OH
0V
1.5V
OUT
IN
1.5V
S1 OPEN
S2 CLOSED
S3 = 1.5V
t
PRZH
t
PRSH
3V
0V
V
CC
V
OL
0.25V
OUT
IN
1.5V
S1 CLOSED
S2 OPEN
S3 = -1.5V
t
PRLZ
3V
0V
V
OH
0V
0.25V
1.5V
OUT
IN
S1 OPEN
S2 CLOSED
S3 = 1.5V
t
PRHZ
S3
Figure 11. Receiver Propagation Delay
Figure 12. Receiver Enable and Disable Times
Note 4: The input pulse is supplied by a generator with the following characteristics: PRR = 250kHz, 50% duty cycle, t
r
≤ 6.0ns, Z
O
= 50Ω.
Note 5: C
L
includes probe and stray capacitance.
MAX3483/MAX3485/MAX3486/
MAX3488/MAX3490/MAX3491
10
Maxim Integrated