Datasheet

MAX13448E
±80V Fault-Protected Full-Duplex
RS-485 Transceiver
_______________________________________________________________________________________ 5
SWITCHING CHARACTERISTICS (V
CC
= +5V ±10%) (continued)
(T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
D r i ver E nab l e Ti m e to Outp ut H i g ht
DZH
R
L
= 500Ω, C
L
= 50pF, Figure 4 1500 ns
Driver Disable Time from
Output High
t
DHZ
R
L
= 500Ω, C
L
= 50pF, Figure 4 1000 ns
Driver Enable Time from
Shutdown to Output High
t
DZH
(
SHDN
)
R
L
= 500Ω, C
L
= 50pF, Figure 4 8 µs
Driver Enable Time to Output Low t
DZL
R
L
= 500Ω, C
L
= 50pF, Figure 5 1000 ns
Driver Disable Time from
Output Low
t
DLZ
R
L
= 500Ω, C
L
= 50pF, Figure 5 2 µs
Driver Enable Time from
Shutdown to Output Low
t
DZL
(
SHDN
)
R
L
= 500Ω, C
L
= 50pF, Figure 5 8 µs
Driver Time to Shutdown t
SHDN
R
L
= 500Ω, C
L
= 50pF 12 µs
RECEIVER
Receiver Propagation Delay
t
RPLH
,
t
RPHL
C
L
= 20pF, V
ID
= 2V, V
CM
= 0V,
Figure 6
2000 ns
Receiver Output Skew t
RSKEW
C
L
= 20pF, t
RSKEW
= [t
RPLH
- t
RPHL
],
Figure 6
200 ns
Receiver Enable Time to
Output High
t
RZH
R
L
= 1kΩ, C
L
= 20pF, Figure 7 1000 ns
Receiver Disable Time from
Output High
t
RHZ
R
L
= 1kΩ, C
L
= 20pF, Figure 7 150 ns
Receiver Wake Time from
Shutdown
t
RWAKE
R
L
= 1kΩ, C
L
= 20pF, Figure 7 8 µs
Receiver Enable Time to
Output Low
t
RZL
R
L
= 1kΩ, C
L
= 20pF, Figure 7 1000 ns
Receiver Disable Time from
Output Low
t
RLZ
R
L
= 1kΩ, C
L
= 20pF, Figure 7 150 ns
Receiver Time to Shutdown t
SHDN
R
L
= 500Ω, C
L
= 50pF 150 ns
Note 2: Parameters are 100% production tested at T
A
= +25°C, unless otherwise noted. Limits over temperature are guaranteed by
design.
Note 3: All currents into the device are positive. All currents out of the device are negative. All voltages are referenced to device
ground, unless otherwise noted.
Note 4: ΔV
OD
and ΔV
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input changes state.
Note 5: The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback output
current applies during current limiting to allow a recover from bus contention.