3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
DRIVER SWITCHING CHARACTERISTICS—MAX3483E/MAX3488E
(V
CC
= +3.3V, T
A
= +25°C.)
PARAMETER
Maximum Data Rate
Driver Differential Output Delay
Driver Differential Output Transition Time
Driver Propagation Delay, Low-to-High Level
Driver Propagation Delay, High-to-Low Level
t
DD
t
TD
t
PLH
t
PHL
t
PDS
t
PZL
t
PZH
t
PHZ
t
PLZ
t
PSL
t
PSH
R
L
= 60Ω, Figure 7
R
L
= 60Ω, Figure 7
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
SYMBOL
CONDITIONS
MIN
250
600
400
700
700
900
740
930
930
±50
900
600
50
50
1.9
2.2
1300
800
80
80
2.7
3.0
1400
1200
1500
1500
TYP
MAX
UNITS
kbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
|
t
PLH
- t
PHL
|
Driver Propagation-Delay Skew (Note 2)
Driver-Output Enable Time to Low Level
Driver-Output Enable Time to High Level
Driver-Output Disable Time from High Level
Driver-Output Disable Time from Low Level
Driver-Output Enable Time from Shutdown to Low Level
Driver-Output Enable Time from Shutdown to High Level
DRIVER-OUTPUT ENABLE/DISABLE TIMES (MAX3483E only)
RECEIVER SWITCHING CHARACTERISTICS
(V
CC
= +3.3V, T
A
= +25°C.)
PARAMETER
Time to Shutdown
Receiver Propagation Delay,
Low-to-High Level
Receiver Propagation Delay,
High-to-Low Level
SYMBOL
t
SHDN
t
RPLH
t
RPHL
t
RPDS
t
PRZL
t
PRZH
t
PRHZ
t
PRLZ
t
PRSL
t
PRSH
CONDITIONS
MAX3483E/MAX3485E/MAX3486E/MAX3491E
only (Note 3)
V
ID
= 0 to 3.0V, C
L
= 15pF, Figure 11
MAX3483E/MAX3488E
V
ID
= 0 to 3.0V, C
L
= 15pF, Figure 11
MAX3483E/MAX3488E
V
ID
= 0 to 3.0V, C
L
= 15pF, Figure 11
MAX3483E/MAX3488E
C
L
= 15pF, Figure 12,
MAX3483E/85E/86E/91E only
C
L
= 15pF, Figure 12,
MAX3483E/85E/86E/91E only
C
L
= 15pF, Figure 12,
MAX3483E/85E/86E/91E only
C
L
= 15pF, Figure 12,
MAX3483E/85E/86E/91E only
C
L
= 15pF, Figure 12,
MAX3483E/85E/86E/91E only
C
L
= 15pF, Figure 12,
MAX3483E/85E/86E/91E only
MIN
80
25
25
25
25
TYP
190
62
75
62
75
6
12
25
25
25
25
720
720
MAX
300
90
120
90
120
±10
±20
50
50
45
45
1400
1400
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
|
t
PLH
- t
PHL
|
Receiver
Propagation-Delay Skew
Receiver-Output Enable Time
to Low Level
Receiver-Output Enable Time
to High Level
Receiver-Output Disable
Time from High Level
Receiver-Output Disable
Time from Low Level
Receiver-Output Enable Time
from Shutdown to Low Level
Receiver-Output Enable Time
from Shutdown to High Level
Note 1:
∆V
OD
and
∆V
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input changes state.
Note 2:
Measured on
|t
PLH
(Y) - t
PHL
(Y)| and
|t
PLH
(Z) - t
PHL
(Z)|.
Note 3:
The transceivers are put into shutdown by bringing
RE
high and DE low. If the inputs are in this state for less than 80ns, the
devices are guaranteed not to enter shutdown. If the inputs are in this state for at least 300ns, the devices are guaranteed
to have entered shutdown. See
Low-Power Shutdown Mode
section.
4
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
